Page 1 LUNA2000-200KWH-2H1 Smart String ESS Maintenance Manual Issue Date 2023-02-28 HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei Digital Power Technologies Co., Ltd. and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
Page 3: About This Document
Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 4 4 Replacing a Battery Pack. Updated 26 Emergency Handling. Updated 27.3 Battery Pack Storage and Single Battery Pack Charge. Issue 01 (2022-10-30) This issue is used for first office application (FOA). Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 5: Table Of Contents
8 Replacing an Air Conditioner..................... 92 8.1 Replacing an Air Conditioner Internal Fan........................92 8.2 Replacing an Air Conditioner External Fan........................95 8.3 Replacing an Air Conditioner Main Control Board....................97 Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 6 27.1 How Do I Recycle Used Batteries?..........................154 27.2 Repainting the Equipment............................155 27.3 Battery Pack Storage and Single Battery Pack Charge..................159 27.4 How Can I Export Device Logs?..........................164 A Acronyms and Abbreviations................... 165 Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 8: Personal Safety
D ANGER During operations, use dedicated insulated tools to prevent electric shocks or short circuits. The dielectric withstanding voltage level must comply with local laws, regulations, standards, and specifications. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 9 Personnel who will perform special tasks such as electrical operations, working at heights, and operations of special equipment should possess the required local qualifications. ● Only certified high-voltage electricians are allowed to operate medium- voltage equipment. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 10: Electrical Safety
Observe the power plant safety regulations, such as the operation and work ticket mechanisms. ● Install temporary fences or warning ropes and hang "No Entry" signs around the operation area to keep unauthorized personnel away from the area. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 11 Do not use solvents such as water, alcohol, or oil to clean electrical components inside or outside of the equipment. Grounding ● Ensure that the grounding impedance of the equipment complies with local electrical standards. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 12 0°C. Handle cables with caution, especially at a low temperature. – Cables stored at subzero temperatures must be stored at room temperature for at least 24 hours before they are laid out. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 13: Environment Requirements
1.3 Environment Requirements D ANGER Do not expose the equipment to flammable or explosive gas or smoke. Do not perform any operation on the equipment in such environments. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 14 Do not install the equipment in an area conducive for the growth of microorganisms such as fungus or mildew. ● Do not install the equipment in an area with strong vibration, noise, or electromagnetic interference. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 15: Mechanical Safety
Do not mount it on an insecure moveable object or metal object with sharp edges. Make sure that the hooks will not slide off. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 16 ● Use correct tools and operate them in the correct way. Moving Heavy Objects ● Be cautious to prevent injury when moving heavy objects. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 17 Only trained and qualified personnel are allowed to work at heights. ● Do not work at heights when steel pipes are wet or other risky situations exist. After the preceding conditions no longer exist, the safety owner and Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 18 Ensure that the ladder is securely positioned and held firm. ● When climbing up the ladder, keep your body stable and your center of gravity between the side rails, and do not overreach to the sides. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 19: Equipment Safety
To avoid short circuits or other risks, do not drill holes into buried pipes or cables. ● When drilling holes, protect the equipment from shavings. After drilling, clean up any shavings. 1.5 Equipment Safety Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 21 Professionals must wear safety goggles, rubber gloves, gas masks, and protective clothing, power off the equipment, remove the battery, and contact technical engineers. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 23 (for example, in an environment that is damp or prone to rain). ● Batteries are not charged as required during storage due to your reasons, resulting in capacity loss or other irreversible damages to the batteries. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 24 When installing batteries, do not place installation tools, metal parts, or sundries on the batteries. After the installation is complete, clean up the objects on the batteries and the surrounding area. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 25 Electrolyte is corrosive and can cause irritation and chemical burns. Should you come into direct contact with the battery electrolyte, do as follows: Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 26 If batteries are out of service life, contact a battery recycling company for disposal. ● Do not expose waste batteries to high temperatures or direct sunlight. ● Do not place waste batteries in environments with high humidity or corrosive substances. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 27: Routine Maintenance
This section lists only personal protective equipment (PPE). For details about the tools required for replacement, see the specific parts replacement section. Dust mask Insulated gloves Protective gloves Goggles Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 28: Powering Off A Single Ess
Figure 2-1 Batch shutdown of the ESSs connected to the same DC bus Step 2 Click Monitoring and check that the indicators for the PCS, ESC, and ESR are yellow or gray. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 29: Power-Off Process
As shown by (5) in Figure off the auxiliary power supply 2-2. auxiliary (Optional) Powering off the As shown by (6) and (7) power Figure 2-2. supply disconnect Figure 2-2 Power-off process Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 30: Powering Off Ess Devices
Step 1 Turn off the switches between the AC power distribution cabinet and the ESS. ----End 2.3 Routine Maintenance 2.3.1 Unscheduled Maintenance Log in to the SmartLogger WebUI/CMU WebUI/FusionSolar app/SmartPVMS and check whether there are major or minor alarms. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 31: Quarterly Maintenance
● Appearance window ● Pressure relief windows ● Rust condition are not damaged. ● Foreign matter/Ice and snow ● There is no foreign matter, ice, or snow on the top. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 32: Semi-Annual Maintenance
T/H sensors with smoke or steady red, and the T/H sensor heat generated by using reports the temperature change temperatu on the CMU. dedicated devices re and humidity (T/H) sensor Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 33: Annual Maintenance
● The fans rotate properly without ● Front panel vent abnormal sound. ● The front panel vent is clean and free from blockage. Adapter Check the indicator status. The indicator is steady green. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 34: Alarm Reference
If yes, connect the cable correctly. 3. Check whether the door status sensor is displaced. If yes, move it back to the original position. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 35 If yes, securely connect 2. The fan is damaged. Fault the cable. Check whether the fan is damaged or burnt. If yes, contact your technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 36 If yes, clean the air intake or 3. The air intake or exhaust vent. exhaust vent of the outdoor fan is 4. If the fault persists, contact your blocked. technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 37 2. Check whether any cable is loose. or correctly. 3. Replace the condenser temperature Temper 2. The sensor is sensor. ature damaged, open- Sensor circuited, or short- Fault circuited. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 38 3. The external air blocked. If yes, clean the air intake or flow is short- exhaust vent. circuited or blocked. 4. If the fault persists, contact your technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 39 3825 Major Cause ID = 1 Troubleshoot the fault by referring to the Alarm alarm troubleshooting section in the UPS A UPS alarm has been user manual. generated. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 40 2. On the maintenance screen, check Humidit humidity sensors in the that the temperature and humidity y Sensor battery cabin. sensor is correctly connected. Malfunc tion Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 41 The pressure of the fire of the suppression module as soon as possible. suppression module is fire Otherwise, the system will shut down insufficient. suppress automatically in three days. module insuffici ent. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 42 3833 Rectifier Major Cause ID = 1–6 1. Replace rectifier [Number]. Fault The rectifier hardware 2. If the fault persists after the is faulty. replacement, contact your technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 43 2. Remove the rectifier [Number] and tage insert it again. 3. If the fault persists, replace the rectifier [Number] or monitoring module. 4. If the fault persists after the replacement, contact your technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 44 If not, reconnect the cable fails. Failure properly. 2. Check whether the power cable of the device is loose. If yes, connect it securely. 3. If the fault persists, contact your technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 45 If not, reconnect the cable failed. Failure properly. 2. Check whether the power cable of the device is loose. If yes, connect it securely. 3. If the fault persists, contact your technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 46 Temper the battery cabin are faulty. The ambient ature temperature in the 2. Check whether the doors of the battery cabin is too battery cabin are completely closed. low. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 47 Overvoltage is generated, rectify the fault by referring to the following table. Table 3-2 PSU indicator status and troubleshooting Indicator Color Status Description Suggestion Power Green Steady on The PSU has Normal. indicator an AC input. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 48 ● A shutdown protection alarm is generated due to ambient overtempe rature or undertemp erature. AC input Check the overvoltage power grid voltage. undervoltage protection is triggered. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 49 ● The ESR-CabinetNo ID is the same as that displayed on the app. The ID is 1 on the left and 2 on the right. A maximum of two ESR-CabinetNo IDs are supported. ● ESM-SlotNo indicates the slot number of the battery pack. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 50 Rack suggestions. voltage of the power Controller module. 2. If the alarm persists, contact your dealer or technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 54 4. If the ventilation and ambient 4. The fan of the temperature meet requirements, battery power control contact your dealer or technical module is abnormal. support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 56 3. Turn on the switch on the battery side and the switch on the bus side in sequence, and issue a startup command. 4. If the alarm persists, contact your dealer or technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 58 The power-on self-test on the alarm handling was terminated due to suggestions. a system exception. 2. If the alarm persists after the system is reset, contact your dealer or technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 62 The power-on self-test on the alarm handling was terminated due to suggestions. a system exception. 2. If the alarm persists after the system is reset, contact your dealer or technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 63 4. Turn on the switch on the battery side and the switch on the bus side in sequence, and issue a startup command. 5. If the alarm persists, contact your dealer or technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 64 Please update the entire ESU. 2. The update failed. 2. If the update failed multiple times, Battery 3. The battery packs contact your dealer or technical Packs have been replaced. support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 65 The replacement ESM the system. Replace it with an ESM is incompatible with of the original model. the system. 2. If the alarm persists, contact your dealer or technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 74 3. If the alarm persists after the been idle for a long battery has been charged for time after grid one hour, contact your dealer or connection. technical support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 75 1. Check whether the air perature conditioner is running properly. The ambient temperature is 2. If the alarm persists, contact Optimizati excessively low. your dealer or technical support. on Unit of Battery Pack Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 76: Replacing A Battery Pack
● Do not smoke or have an open flame around batteries. ● Do not use wet cloth to clean exposed copper bars or other conductive parts. ● Do not use water or any solvent to clean batteries. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 77 If the battery pack appears normal and without irritating odor, remove the faulty battery pack. Step 2 Press to open the covers on both sides of the battery pack. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 78 Figure 4-2 Removing copper bars and cables Step 4 Remove screws from the battery pack. Figure 4-3 Removing screws Step 5 Use a forklift to transport the installation kit to the vicinity of the ESS. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 79 Figure 4-4 Forklift space dimensions Step 6 Take out the installation kit. Figure 4-5 Taking out the installation kit Step 7 Insert, assemble, and secure the installation kit onto the forklift. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 80 Figure 4-6 Assembling the installation kit Step 8 Install the operating handle on the battery pack, pull the old battery pack onto the installation kit, and secure the battery pack. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 81 Step 10 Move the new battery pack onto the installation kit, and bind the battery pack. Figure 4-8 Moving the new battery onto the installation kit Step 11 Install the new battery pack in the ESS. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 82 Step 13 Connect cables and copper bars. ----End Follow-up Procedure Step 1 Power on the system. For details, see the power-on section in the ESS user manual. Step 2 Check whether the functions are restored. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 83 ● There is no obvious paint peeling or rust. ● The screws are secured. ● The fans rotate properly without abnormal sound. ● The front panel vent is clean and free from blockage. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 84: Replacing A Battery Management Module
There are multiple battery pack appearances. This section uses one type of battery pack as an example. The actual product may vary. Step 1 Press to open the covers on both sides of the battery pack. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 85 Step 3 Remove the front panel of the battery pack. Figure 5-3 Removing the front panel of the battery pack Step 4 Remove the three flat cables from the management module and wrap them with insulation tape. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 86 ● If you do not perform operations as required, the module may be energized during maintenance, which poses safety risks. ● Use an insulated socket wrench with an extension bar longer than 40 mm. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 87 (including the battery pack fixture). NO TICE During the operation, prevent screws from falling into the bottom of the ESS. Figure 5-7 Removing the screws Step 8 Install a new management module. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 88 Figure 5-9 Installing the nuts Figure 5-10 Installing the short copper bar Step 9 Remove the insulation tape from the flat cables and install the flat cables to the management module. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 89 Step 11 Install copper bars and cables for the battery pack. Figure 5-12 Installing copper bars and cables for the battery pack Step 12 Close the battery pack covers. Figure 5-13 Closing the battery pack covers ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 90 ● There is no obvious paint peeling or rust. ● The screws are secured. ● The fans rotate properly without abnormal sound. ● The front panel vent is clean and free from blockage. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 91: Replacing A Battery Management Module
Step 1 Power on the system. For details, see the power-on section in the ESS user manual. Step 2 Check the running status of the system and ensure that the functions are restored. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 92: Replacing A Rack Controller Fan
Step 1 Remove the decorative cover from the Smart Rack Controller. Figure 7-1 Removing the decorative cover Step 2 Remove screws from the fan tray, and then pull it out. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 93 Figure 7-3 Disconnecting cables Step 4 Remove cable ties from the faulty fan. ● Fan 1 is faulty. Figure 7-4 Removing the fan 1 cable ties ● Fan 2 is faulty. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 94 Step 5 Remove the faulty fan (fan 1 is used as an example). Figure 7-7 Removing the fan Step 6 Install a new fan (fan 1 is used as an example). Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 95 Binding positions for fan 1 Figure 7-9 Binding the cables of fan 1 ● Binding positions for fan 2 Figure 7-10 Binding the cables of fan 2 ● Binding position for fan 3 Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 96 Step 8 Connect the cables correctly according to the cable labels and bind the cables. Figure 7-12 Binding cables Step 9 Push the fan tray into the slot and tighten the screw. Figure 7-13 Reinstalling the fan tray ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 97 Step 4 Turn on DC switch 1Q1 in the cabinet. Step 5 Turn on DC switch 1Q2 in the cabinet. Step 6 Check the running status of the rack controller and check whether it functions properly. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 98: Replacing An Air Conditioner
The power loop of the ESS does not need to be powered off. You are advised to set the ESS in standby or shutdown mode during replacement. Procedure Step 1 Remove the air duct. Figure 8-1 Removing the air duct Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 99 Figure 8-3 Removing the front cover of the air conditioner Step 4 Remove the screws from the fixing plate of the internal fan, and then remove the internal fan and the fixing plate. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 100 Step 9 Connect and arrange the internal fan cable bundle to the main control board. Step 10 Install the front cover. Step 11 Install air conditioner cables. Step 12 Install the air duct. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 101: Replacing An Air Conditioner External Fan
Step 1 Remove the rear cover of the air conditioner, and use a dedicated T20 security Torx screwdriver to remove the two security Torx screws from the bottom of the cabinet. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 102 Figure 8-8 Removing the external fan and the fixing plate Step 3 Remove cables from the quick connect port of the external fan, and remove the external fan from the support. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 103: Replacing An Air Conditioner Main Control Board
Refer to the alarm handling suggestions in the alarm list. ● Tools: flat-head or Phillips insulated torque screwdriver, multimeter ● Power-off: Turn off the power switch of the air conditioner in the cabinet. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 104 Figure 8-10 Removing the air duct Step 2 Remove cables from the air conditioner. Figure 8-11 Removing air conditioner cables Step 3 Remove the front cover of the air conditioner. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 105 Step 7 Reinstall the cables of the main control board. Step 8 Install the front cover. Step 9 Connect the air conditioner cables. Step 10 Install the air duct for the air conditioner. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 106 Figure 8-14 Removing the old air conditioner Step 3 Click Auto. Search and add the new air conditioner. Figure 8-15 Adding the new air conditioner Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 107: Replacing An Air Conditioner
At least two persons are required to replace the component. Procedure Step 1 Remove the air duct. Figure 8-16 Removing the air duct Step 2 Remove cables from the air conditioner. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 108 Step 3 Remove screws and sealing tapes, and then remove the old air conditioner. Figure 8-18 Removing the faulty air conditioner Step 4 Remove the remaining sealing tapes from the door frame. Step 5 Install a new air conditioner. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 109 Step 1 Turn on the power switch of the air conditioner in the cabinet. Step 2 Log in to the CMU, choose MaintenanceConnect DeviceRemove Device, and remove the old air conditioner. Figure 8-20 Removing the old air conditioner Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 110 Step 4 Check whether the function is restored. Check Item Criteria Alarm Information No component communication alarm is generated. Function The functions are normal. Running data Air conditioner status: normal operation ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 111: Replacing A Light
Step 2 Install a new light in the original position. ----End Follow-up Procedure Step 1 Turn on the DC switch of the light in the ESS. Step 2 Check whether the lighting function is restored. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 112: Replacing A Fuse
The ESS has been powered off. For details, see 2.2 Powering Off a Single ESS. Procedure Step 1 Remove the fuse. Figure 10-1 Removing the fuse Step 2 Install a new fuse. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 113 Step 1 Power on the system. For details, see the power-on section in the ESS user manual. Step 2 Check the running status of the system and ensure that the functions are restored. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 114: Replacing A Circuit Breaker
1. The switch is not ON or 1. Set the switch to OFF and faulty due to OFF. then to ON. overcurrent or 2. The switch is faulty. 2. Replace the switch. short circuit. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 115 Step 1 Remove the cover from the power distribution area. Step 2 Remove the DC switch. Figure 11-2 Removing the DC switch NO TE Insulate the removed cables and copper bars. Step 3 Install a new DC switch. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 116 Step 1 Power on the system. For details, see the power-on section in the ESS user manual. Step 2 Check the running status of the system and ensure that the functions are restored. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 117: Replacing An Ac Main Switch
Step 1 Disconnect cables from the AC main switch and label the cables. Step 2 Remove the faulty AC main switch. Step 3 Install a new AC main switch. Step 4 Connect the cables based on the labels. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 118: Replacing A 220 V Socket Switch
Step 1 Disconnect cables from the 220 V socket switch and label the cables. Step 2 Remove the faulty 220 V socket switch. Step 3 Install a new 220 V socket switch. Step 4 Connect the cables based on the labels. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 119: Replacing A Psu Switch
Step 1 Disconnect cables from the PSU switch and label the cables. Step 2 Remove the faulty PSU switch. Step 3 Install a new PSU switch. Step 4 Connect the cables based on the labels. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 120: Replacing A Ups Switch
Step 1 Disconnect cables from the UPS switch and label the cables. Step 2 Remove the faulty UPS switch. Step 3 Install a new UPS switch. Step 4 Connect the cables based on the labels. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 121: Replacing A Dc Power Distribution Switch
Step 1 Disconnect the cables from the DC power distribution switch, and label the cables. Step 2 Remove the faulty DC power distribution switch. Step 3 Install a new DC power distribution switch. Step 4 Connect the cables based on the labels. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 122: Replacing An Spd
● The ESS has been powered off. For details, see 2.2 Powering Off a Single ESS. D ANGER Do not replace an SPD during a thunderstorm. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 123 Step 1 Remove the faulty surge protection module from the SPD. Step 2 Install a new surge protection module. Figure 12-2 Replacing a surge protection module ----End Follow-up Procedure Check that the SPD alarm is cleared. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 124: Replacing An Emergency Stop Switch
Step 1 Remove the screws from the panel of the emergency stop button using a Phillips insulated torque screwdriver. Step 2 Record the cable information, disconnect the cables from the emergency stop button, and remove the emergency stop button. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 125 Step 1 Power on the system. For details, see the power-on section in the ESS user manual. Step 2 Check the running status of the system and ensure that the functions are restored. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 126: Replacing An Embedded Power Subrack
Power-off: Turn off the upstream AC input switch for the embedded power subrack in the cabinet. Procedure Step 1 Wear protective gloves. Step 2 Record the cable connection positions on the embedded power subrack and disconnect the cables. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 127 Step 6 Reconnect the cables to the new embedded power subrack based on the recorded information. Step 7 Remove the protective gloves. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 128: Replacing A Cmu Adapter
Status Normal Gree Steady The power input and output are normal, and the power module is running properly. No output The power module is faulty or has no output. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 130: Replacing A Cmu
If you cannot log in to the CMU because the CMU is damaged, skip this step. Set parameters after replacement. Log in to the CMU, choose MaintenanceSystem Maint., and export the configuration file of the old CMU. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 131 At least two persons are required to replace the component. Procedure Step 1 Disconnect cables from the CMU and label them. Step 2 Remove the faulty CMU and its cabinet-mounting bracket. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 132 Figure 16-4 Replacing a CMU Step 4 Install the new CMU in the cabinet. Step 5 Connect the cables based on the labels. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 133 To replace the CMU, export the full configuration file excluding certificate- related files. After the full configuration file is imported, you need to reload a third-party certificate if required. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 134 Table 16-1 Parameter settings Device Connection Mode/Port Address Number Power meter COM1 COM2 COM3 CO sensor 1 COM3 CO sensor 2 T/H sensor COM3 Exhaust controller COM2 Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 135 Figure 16-6 Adding a device Click Auto Assign Address, select Adjust Address, and search and add the air conditioner again. Click Monitoring to check whether the battery rack has been connected. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 136: Replacing A Door Status Sensor
Step 1 Remove the enclosure of the door status sensor. Step 2 Unscrew and remove the alarm cables and mark the connection positions. Step 3 Unscrew and remove the door status sensor. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 137 Step 6 Connect the alarm cables in sequence and tighten the screws. Step 7 Reinstall the enclosure of the door status sensor. ----End Follow-up Procedure Check that the door status alarm is cleared. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 138: Replacing A Water Sensor
Figure 18-1 Position of the water sensor Tools: Phillips insulated torque screwdriver, torque wrench Procedure Step 1 Remove cables from the water sensor. Step 2 Remove the faulty water sensor. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 139 LUNA2000-200KWH-2H1 Smart String ESS Maintenance Manual 18 Replacing a Water Sensor Figure 18-2 Removing the water sensor Step 3 Install a new water sensor. Step 4 Connect the cables. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 140: Replacing A T/H Sensor
Refer to the alarm handling suggestions in the alarm list. Figure 19-1 Position of the T/H sensor Procedure Step 1 Record the DIP switch settings. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 141 Step 4 Set the DIP switches for a new T/H sensor based on the recorded setting information. Step 5 Install the new T/H sensor. Step 6 Connect the cables. Step 7 Check that no alarm is generated. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 142: Replacing An Exhaust Controller
Step 1 Disconnect the upstream power input for the TCUE. Step 2 Record the cable connection positions on the TCUE, and disconnect the cables. Step 3 Remove the TCUE control box. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 143 Step 5 Record the cable connection positions on the TCUE control board and disconnect the cables. Step 6 Record the information about the jumper caps on the TCUE control board. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 144 Step 9 Install the new TCUE control board to the TCUE control box. Figure 20-5 Installing the new TCUE control board Step 10 Reinstall the TCUE control box. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 145 Figure 20-6 Reinstalling the TCUE control box Step 11 Connect cables to the TCUE control box based on the recorded information. Step 12 Connect the upstream power input for the TCUE. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 146: Replacing A Co Sensor
Procedure Step 1 Record the DIP switch settings. Table 21-1 DIP switch settings Position (See Toggle Toggle Toggle Toggle Figure 21-1) Switch 1 Switch 2 Switch 3 Switch 4 Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 147 Step 4 Set the DIP switches for a new CO sensor based on the recorded setting information. Step 5 Install the new CO sensor. Step 6 Connect the cables. Step 7 Check that no alarm is generated. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 148: Replacing An Exhaust Fan
2.2 Powering Off a Single ESS. Procedure Step 1 Remove the fan baffle plate. Step 2 Disconnect cables between the fan and the terminals. Step 3 Unscrew and remove the exhaust fan. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 149 Step 4 Install a new fan and tighten the screws. Step 5 Connect the cables between the fan and the terminals. Step 6 Secure the fan baffle plate. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 150: Replacing An Smu11B
Step 2 Record the cable connection positions on the SMU panel, remove the COM communications cables, and remove the signal cable terminals. Step 3 Pull out the handle to remove the SMU from the subrack. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 151 Step 9 Disconnect the ground cable of the ESD wrist strap, and remove the ESD wrist strap and ESD gloves. ----End Follow-up Procedure Put the removed component in an ESD box or bag and return it to the local warehouse. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 152: Replacing A Smoke Detector
Step 1 Record the cable connection positions on the smoke detector and remove the cables. Step 2 Hold the smoke detector by hand, and rotate it counterclockwise to remove it from the base. Figure 24-2 Removing the smoke detector Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 153 Step 3 Install a new smoke detector and rotate the detector clockwise until it locks into place. Step 4 Reconnect the cables to the new smoke detector based on the recorded information. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 154: Replacing An I/O Expansion Board
Log in to the SmartLogger WebUI, CMU WebUI, FusionSolar app, or management system and send a shutdown command to the rack controller. Turn off the ESS output DC switch 1Q2. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 155 Step 2 Remove the faulty I/O expansion board. Figure 25-2 Removing the I/O expansion board Step 3 Install a new I/O expansion board. Figure 25-3 Installing an I/O expansion board Step 4 Reinstall the cables. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 156 Step 5 Check the running status of the system and ensure that the functions are restored. Step 6 Log in to the CMU WebUI, choose Maintenance > Device Mgmt. > Connect Device > Auto Device Search, and connect the I/O expansion board. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 157: Emergency Handling
If any part of the batteries is submerged in water, do not touch the batteries to avoid electric shock. ● Do not use batteries that have been soaked in water. Contact a battery recycling company for disposal. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 158 After the fire is extinguished, the site must be handled by professionals in accordance with local laws and regulations. Do not open the doors of the ESS without permission. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 159 ESS capacity, battery pack location and distribution, and user manuals. Do not open the doors of the ESS before it is deemed safe by professionals. Follow local fire fighting regulations. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 160: Faq
NO TE You need to cover the related transportation expenses. Step 4 Recycling companies handle recycling. The recycled lithium batteries are at the disposal of the recycling companies. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 161: Repainting The Equipment
(required for repainting a large 4. The paint area) coating should be thin and even. The surface should Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 162 Step 2 Dip a piece of cotton cloth into anhydrous alcohol and wipe the polished or damaged area to remove dirt or dust. Then wipe off the alcohol with a clean and dry cotton cloth. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 163 Figure 27-3 Repainting a damaged area Step 5 Wait for 30 minutes and check whether the painting meets the requirements. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 164 Obtain the color number based on the color palette included with the equipment. NO TE The following paint model list provided by Huawei is subject to change and for reference only. The price of paint and technical services are subject to local pricing. Supplier Location...
Page 165: Battery Pack Storage And Single Battery Pack Charge
There must be a battery charge label on the packing case. The charge label must specify the latest charge time and the next charge time. Figure 27-4 Battery charge label Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 166 Table 27-2 Packaging label description Picture Description This way up: The package should be vertically oriented during transport and storage. Fragile: The package contains fragile objects and must be handled with care. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 167 The warehouse keeper should collect battery storage information every month and periodically report the battery inventory information. The batteries in long-term storage should be charged in a timely manner. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 168 Insulated torque socket wrench ● Charger Inspection Before Charge Before charging a battery, you need to check its appearance. Charge the qualified battery or dispose of the unqualified one. Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 169 Step 7 After the charge and discharge are complete, wait until the fan in the charger keeps running for about 5 minutes to dissipate the residual heat, turn off the AC and DC circuit breakers, and remove the cables. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 170: How Can I Export Device Logs
Step 3 Observe the progress bar and wait until the log export is complete. Step 4 After the export is successful, click Log archiving to save the logs. ----End Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 171: A Acronyms And Abbreviations
A Acronyms and Abbreviations Acronyms and Abbreviations application battery control unit battery monitoring unit control area network central monitoring unit cluster communication port smart rack controller battery pack emergency power-off battery rack Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 172 LUNA2000-200KWH-2H1 Smart String ESS Maintenance Manual A Acronyms and Abbreviations power supply unit SACU smart array controller site monitoring unit state of capacity state of health Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd.

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