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SERVICE MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
RAC-10SH3
RAC-14SH3
RAC-18SH3
SPECIFICATIONS
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
COOLING
CAPACITY
(B.T.U./h)
TOTAL INPUT
TOTAL AMPERES
HEATING
CAPACITY
(B.T.U./h)
(mm)
DIMENSIONS
NET WEIGHT
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
ROOM AIR CONDITIONER
MARCH 2012
RAS-10SH3
RAS-14SH3
RAS-18SH3
INDOOR UNIT
OUTDOOR UNIT
RAS-10SH3
RAC-10SH3
1ø, 220V, 50Hz
(W)
600 (400 - 1,100)
(A)
3.2
(kW)
2.5 (1.6 - 3.1)
8,500 (5,400 - 10,540)
(W)
780 (400 -1,100)
(A)
3.9
(kW)
3.4 (1.7 - 4.2)
11,560 (5,780 - 14,280)
798
750 (+91)※
W
H
295
548
258
288 (+42)※
D
(kg)
11
INDOOR UNIT + OUTDOOR UNIT
HHAW
R
A
R
A
R
A
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
HOW TO USE ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
CONSTRUCTION AND DIMENSIONAL DIAGRAM‥‥‥‥
MAIN PARTS COMPONENT‥‥‥‥‥‥‥‥‥‥‥‥‥‥
WIRING DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
WIRING DIAGRAM OF THE PRINTED WIRING BOARD ‥‥‥
BLOCK DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
BASIC MODE ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
REFRIGERATING CYCLE DIAGRAM ‥‥‥‥‥‥‥‥‥
DISASSEMBLY & ASSEMBLY PROCEDURE ‥‥‥‥‥‥
DESCRIPTION OF MAIN CIRCUIT OPERATION ‥‥‥‥
SERVICE CALL Q&A
TROUBLE SHOOTING ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
PARTS LIST AND DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥
DC INVERTER
INDOOR UNIT
OUTDOOR UNIT
RAS-14SH3
RAC-14SH3
1ø, 220V, 50Hz
1,070 (400 - 1,300)
5.1
3.5 (1.6 - 3.8)
11,900 (5,440 - 12,920)
1,020 (400 -1,400)
4.8
4.2 (1.7 - 5.2)
14,280 (5,780 - 17,680)
798
750 (+91)※
295
258
288 (+42)※
35
11
NO.0060E
S
1 -
0
S
H
3
/
R
A
C
S
1 -
4
S
H
3
/
R
A
C
S
1 -
8
S
H
3
/
R
A
C
CONTENTS
‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥
INDOOR UNIT
OUTDOOR UNIT
RAS-18SH3
1ø, 220V, 50Hz
1,600 (500 - 2,300)
7.4
5.2 (1.1 - 5.5)
17,680 (3,740 - 18,700)
1,660 (500 -2,700)
7.62
6.2 (1.1 - 8.3)
21 080 (3,740 - 28 220)
,
798
548
295
258
35
12
※After installation
1 -
0
S
H
3
1 -
4
S
H
3
1 -
8
S
H
3
4
5
53
56
58
61
65
66
84
86
90
101
108
141
RAC-18SH3
,
792 (+91)※
600
299 (+46)※
41
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Table of Contents
Troubleshooting
Related Manuals for Hitachi RAS-10SH3
Summary of Contents for Hitachi RAS-10SH3
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Page 1: Service Manual
WIRING DIAGRAM OF THE PRINTED WIRING BOARD ‥‥‥ BLOCK DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ BASIC MODE ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ RAC-10SH3 REFRIGERATING CYCLE DIAGRAM ‥‥‥‥‥‥‥‥‥ RAC-14SH3 DISASSEMBLY & ASSEMBLY PROCEDURE ‥‥‥‥‥‥ RAS-10SH3 DESCRIPTION OF MAIN CIRCUIT OPERATION ‥‥‥‥ RAS-14SH3 SERVICE CALL Q&A RAS-18SH3 ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ TROUBLE SHOOTING ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥... -
Page 2: Safety During Repair Work
SAFETY DURING REPAIR WORK 1. In order to disassemble and repair the unit in question, be sure to disconnect the power cord plug from the power outlet before starting the work. 2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit, and the replacement must be effected in correct manner according to the instructions in the Service Manual of the unit. - Page 3 WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS 1. Scope The standards provide for items to be generally observed in carrying and handling semiconductors in relative manufactures during maintenance and handling thereof. (They apply the same to handling of abnormal goods such as rejected goods being returned.) 2.
- Page 4 (6) Use a three wire type soldering iron including a grounding wire. Metal plate (of Al. stainless steel, etc.) Bare copper wire (for body earth) Working table Resistor 1MΩ (1/2W) Staple Earth wire Fig.3 Grounding of the working table soldering iron Grounding wire Screw stop at the screwed part using a rag plate...
- Page 5 CAUTION 1. In quiet operation or stopping the running, its heard slight flowing noise of refrigerant in the refrigerating cycle occasionally, but this noise is not abnormal for the operation. 2. When it thunders near by, it is recommend to stop the operation and to disconnect the power cord plug from the power outlet for safety.
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Page 6: Specifications
SPECIFICATIONS RAS-10SH3 RAC-10SH3 MODEL RAC-18SH RAS-14SH3 RAC-14SH3 RAS-18SH3 FAN MOTOR 30W (DC280V) 47W (DC380V) 47W (DC380V) FAN MOTOR CAPACITOR FAN MOTOR PROTECTOR COMPRESSOR ASC092CD-A8JK 5RS132ZBA21 OVER HEAT PROTECTOR OVERLOAD RELAY FUSE (for MICRO COMPUTER) 25A, 2A, 3.15A 25A, 2A, 3A... - Page 10 この中に 「防カビわさびカセット」 が入っています ●製品の取扱説明書を確認して確実に取り付けてください。 ●開封時は顔を近づけないでください。 わさびの香り成分で、目や鼻に刺激を感じることがあります。 ● 「防カビわさびカセット」 の表面のアルミシートを 注 はがしたり、破ったり、穴をあけたりしないでください。 意 「防カビわさびカセット」 の効果がなくなります。 ●食べられません。...
- Page 34 この中に 「防カビわさびカセット」 が入っています ●製品の取扱説明書を確認して確実に取り付けてください。 ●開封時は顔を近づけないでください。 わさびの香り成分で、目や鼻に刺激を感じることがあります。 ● 「防カビわさびカセット」 の表面のアルミシートを 注 はがしたり、破ったり、穴をあけたりしないでください。 意 「防カビわさびカセット」 の効果がなくなります。 ●食べられません。...
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Page 55: Construction And Dimensional Diagram
CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAS-10SH3, RAS-14SH3, RAS-18SH3 Unit : mm More Than More Than Service Space about Top Air Suction Grill Front Panel Mounting Plate Discharge Grill Horizontal Air Deflector (242) Wireless Remote Controller Drain Drain Hose Drain Cap Connection Port... - Page 56 MODEL RAC-10SH3, RAC-14 SH Unit : mm Handle Handle Air outlet Air Suction grill Rear side Holes for anchor bolt (2 – ø12 x 6 slots for ø8.0 bolt) Notch for anchor bolt (for 2 – ø8.0 bolt) Fixing hole Drain hole Drain hole Service space More than...
- Page 57 MODEL RAC-18SH3 Unit : mm – 55 –...
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Page 58: Main Parts Component
MAIN PARTS COMPONENT THERMOSTAT Thermostat Specifications RAS-10SH3, RAS-14SH3,RAS-18SH3 THERMOSTAT MODEL OPERATION MODE 14.7 (58.5) 16.7 (62.1) INDICATION 14.0 (57.2) 17.3 (63.1) 22.7 (72.9) 24.7 (76.5) TEMPERATURE INDICATION ˚C (˚F) 22.0 (71.6) 25.3 (77.5) 30.7 (87.3) 32.3 (90.1) INDICATION 30.0... - Page 59 COMPRESSOR Compressor Motor Specifications RAC-10SH3, RAC-14SH3 RAC-18SH3 ASC092CD-A8JK 5RS132ZBA21 WHITE WHITE CONNECTION YELLOW YELLOW 1.417 20˚C 2M = 1.21 1.392 (68˚F) 1.435 RESISTANCE VALUE (Ω) 75˚C 2M = 1.34 (167˚F) RAC-10/14SH3 RAC-18SH3 WHITE YELLOW – 57 –...
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Page 61: Outdoor Unit
MODEL RAC-10SH3 RAC-14SH3 OUTDOOR UNIT 2A FUSE 3.15A FUSE (RED) FUSE (RED) INDOOR UNIT – –... - Page 62 MODEL RAC-18SH3 OUTDOOR UNIT YEL RED INDOOR UNIT – –...
- Page 63 WIRING DIAGRAM OF THE PRINTED WIRING BOARD [Remote controller] RZEA00794 When the door is close Model JSW1 JSW2 Remote controller × × backside Wireless Transmission Output Address selector switch Address Switch lever Ｒ ３ １． ２ ｋ Ω ( １/ ８ W) Ｒ...
- Page 64 – –...
- Page 65 ⑥ – –...
- Page 66 MODEL RAC-18SH3 ⑤ – –...
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Page 67: Block Diagram
BLOCK DIAGRAM MODEL RAS-10SH3 / RAC-10SH3 RAS-14SH3 / RAC-14SH3 RAS-18SH3 / RAC-18SH3 INDOOR UNIT OUTDOOR UNIT Inrush current Protection circuit Power source Compressor Power circuit Ｍ Power relay 1 φ AC220V drive circuit 50Hz Compressor Indoor / Outdoor Indoor / Outdoor... -
Page 68: Basic Mode
BASIC MODE MODEL RAS-10SH , 14SH , 18SH Operation Dehumidification and Dry cool only by using the operation Stainless plasma air purifying Cooling Dehumidification, Heating Automatic Special automatic (normally not used) selector button. This doesn't include the dehumidification and mode Dry cool Dry cool by using the quick dehumidification or the Dry cool button. - Page 69 Basic mode for cooling Ｃ Ｌ Ｍ Ｘ Ｔ Ｐ Room temperature Cooling temperature setting remote control temperature setting ＋ Ｓ Ｈ Ｉ Ｆ Ｔ Ｃ ２ ０ min. Cool dash period Fan speed set to AUTO Operation Stop Operation Stop START/STOP switch Thermometer...
- Page 70 Cooling, sleep As-desired "powerful" operation Ｏ Ｎ Ｏ Ｆ Ｆ Remote control "POWERFUL" lit ６ ０’ Temperature setting ０ ． ５ ｈ ｒ １ ｈ ｒ ９ ｈ ｒ PWSFTC Set to 9 hours Sleep key Operation monitor lamp Remote control "SLEEP"...
- Page 71 Basic mode for heating Heating temperature setting remote control setting + SHIFTW + SFTSZW Dash per Dash period Dash period ２ ０’ fan speed set to AUTO Stop Operation Stop Stop Operation Operation START/STOP switch Thermometer off Thermometer Thermometer Thermometer judgment Maximum length 3' Defrost signal Preheating canceled...
- Page 72 Reversing valve defrost Heating, sleep As-desired "powerful" operation Longer than the defrost 15' or more Auto-fresh defrost inhibit period fan speed 30″ 30″ Ｏ Ｎ set to Stop START/STOP switch "HI" Ｏ Ｆ Ｆ Ｏ Ｆ Ｆ Defrost signal Remote control Preheating cancel Preheating cancel "POWERFUL"...
- Page 73 Table 1 Room temperature category Table 2 Room temperature category Dehumidifying operation (at the time of operation startup) (during operation) Table 3 External temperature category Room temperature Room Room temperature category External temperature category (relative value from the temperature Room temperature External When the room When the room...
- Page 74 As-desired "powerful" operation Dehumidifying operation, sleep (1) When reserved for 30 minutes, 1 hour, 2 hours or 3 hours Ｏ Ｎ Ｏ Ｆ Ｆ Ｏ Ｆ Ｆ Remote control as-desired ０ ． ５ ｈ ｒ １ ｈ ｒ 3 ｈ ｒ "POWERFUL"...
- Page 75 Table 1 Room temperature category Table 2 Room temperature category Table 3 External temperature category Dry cool (at the time of operation startup) (during operation) External temperature category External Room Room temperature Room temperature category temperature temperature When the external When the external (relative value from the Room temperature...
- Page 76 Dry cool, sleep 1) When reserved for 30 minutes, 1 hour, 2 hours or 3 hours 0.5hr Set a time ２ 時間 時間を設定 設定 Sleep key Operation lamp Remote control "SLEEP" lit Timer lamp lit Indoor unit See "Basic mode." SILENT Sleep See "Basic mode."...
- Page 77 Laundry Temperature setting Operation details The temperature setting is determined based on the room temperature that was effective at operation startup. (1) Weak heating region "Room temperature setting" = current room temperature + 4℃ (provided that the upper limit is 29℃...
- Page 78 Mold monitoring Monitor lamp Operation lamp Indoor unit 20 minutes 20 minutes 20 minutes 3-minute 3-minute 3-minute 3-minute Lo in dehumidification Lo in dehumidification Vertical vane Dehumidification position Dehumidification position Dehumidification First time Second time 初回 ７ ０ ％ Humidity ６...
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Page 79: Air Purification
Stainless steel plasma air purification operation AIR PURIFICATION button START/STOP button Remote control "AIR PURIFICATION" lit Operation lamp Mist and air purification lamp Indoor unit Operating according to the settings made by remote control Operating according to the settings made by remote control Open Front panel Closed... -
Page 80: Internal Cleaning
Internal cleaning Internal cleaning to be programmed by the [FUNCTION SELECTOR] button Cooling, dehumidification, comfortable cooling Internal cleaning period Wind feed period 1 Heating period 1 Heat radiation period 1 Heating period 2 Heat radiation period 2 Wind feed period 2 CLNTIM_SUF1 CLNTIM_WAM1 CLNTIM_STP1... -
Page 81: Operation Conditions
operation control (1) Pre-filter cleaning system Types of cleaning operation Automatic cleaning: Cleaning conducted automatically when the product is stopped Forcible cleaning: Cleaning conducted when the product is continuously operated Manual cleaning: Cleaning conducted by using the MANUAL CLEANING key on the remote control unit Basic mode (i) Cleaning unit reciprocated + (ii) cleaning lamp + (iii) lateral vane closed + (iv)tap for indoor unit only *For forcible cleaning, (iii) is open (the same as in defrost) -
Page 82: Manual Cleaning
operation control (3) Pre-filter cleaning system Forcible cleaning (1) If the air-conditioner has run for more than 24 consecutive [hours], stop it and clean it forcibly. After the cleaning is over, reset it. Manual cleaning (1) This operation aims to make the product ready for use after having left the air-conditioner unused for a long time. - Page 83 Operation diagram 2 for filter cleaning (manual and forcible cleaning) 24 consecutive Manual cleaning hours later Forcible cleaning Continued from No. 1 Power Operation stop key Manual cleaning possible more than 5 minutes after the last cleaning and Sleep key when the product is stopped.
- Page 84 Operation diagram for filter cleaning 4 (remarks) 4. Forcible cleaning 1. Cleaning in general (1) This will not be activated during mold monitoring, isolated (1) If, during cleaning, the remote control is used to start the dirt monitoring, air-conditioner cleaning, nice temperature, air-conditioner by cooling, heating, or other operation, or auto-fresh.
- Page 85 Operation diagram for filter cleaning (error detection 2) Arrival error (lock) 1. If the limit switch is not detected 3 minutes Power 3 seconds (= 2'33" +30":30" is the safety time) Cleaning initiated after startup, the product will be considered Product command to have an arrival error.
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Page 86: Refrigerating Cycle Diagram
REFRIGERATING CYCLE DIAGRAM MODEL RAS-10SH3 / RAC-10SH3, RAS-14SH3 / RAC-14SH3 COOLING CYCLE INDOOR UNIT OUTDOOR UNIT Service valve (3/8") Charge port (1/2") Single-ended union (3/8") INDOOR HEAT EXCHANGER Reversing valve Air flow Air flow Service valve Single-ended (1/4") union (1/4") - Page 87 REFRIGERATING CYCLE DIAGRAM MODEL RAS-18SH3 / RAC-18SH3 COOLING CYCLE INDOOR UNIT OUTDOOR UNIT Service valve Single-ended (3/8") union (3/8") Charge port (1/2") Reversing valve INDOOR HEAT EXCHANGER Air flow Service valve Single-ended (1/4") union Air flow Electric expansion valve Two-way valve OUTDOOR HEAT EXCHANGER...
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Page 88: Disassembly & Assembly Procedure
DISASSEMBLY & ASSEMBLY PROCEDURE MODEL RAS-10SH3, RAS-14SH3, RAS-18SH3 (3) Remove the terminal board cover. (1) Hold the handheld parts of the front panel and lift it. (2) Move the farthest part of the right arm outwards and remove the shaft. -
Page 89: Cleaning Unit
5. Indicating P.W.B. 3. Cleaning unit (1) From the indicating P.W.B.,remove the lead wire. (1) Remove the lead wrie and ground wire from the electrical (2) Remove the board upwards from the lug on the board parts box(CN8,CN10). cover. (2) Remove the left upper screw for the cleaning unit. (3) Put your hand into the left side of the dust catcher,pull the bottom slightly upwords,then remove it towards you,and remove the left and middle and right lugs in sequence. -
Page 90: Electrical Parts
MODEL RAC-10SH3, RAC-14SH3, 7. Dew pan components、 RAC-18SH3 Electric dust collector・Electrode (1) Remove the lugs fixed to the cabinet. 1. Electrical parts (2) Place your hands on both sides of the dew pan and turn (1) Remove the service value cover lock screws and lower the cover to remove it. - Page 91 RAC-10SH3 RAC-14SH3 LD301 3.15A-FUSE LD302 DC VOLTAGE MEASURING POINT(-)(IPM 33) LD303 DC VOLTAGE MEASURING POINT(+)(IPM 25) TEST SWITCH COMPRESSOR CONNECTOR（CN1） 2A-FUSE MAIN P.W.B OUTDOOR FAN CONNECTOR（CN24） SELF-CHECK CONNECTOR（CN30） RAC-18SH3 DC VOLTAGE MEASURING POINT(+)(IPM P) DC VOLTAGE MEASURING POINT(-)(IPM N) TEST SWITCH LD303(RED) LD302(RED) LD301(RED)
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Page 92: Description Of Main Circuit Operation
DESCRIPTION OF MAIN CIRCUIT OPERATION MODEL RAS-10SH , RAS-14SH , RAS-18SH 1. Power relay operation Power relay Smoothing capacitor Power plug Control power circuit Terminal board Temperature fuse Power relay ON signal (from pin 87 of microcomputer) Indoor/outdoor Indoor/outdoor communication circuit communication circuit Operation sequence of relay Operation command of... - Page 93 2. Control power circuit Two-way Indoor fan valve coil motor Ｆ Ｍ D001 T001 Primary 280V 8.5V C126 FU1 3A fuse TH001 L151 D102 D103 1 2 3 4 D101 D131 R134 AC220V IC101 R10 3 C107 R127 IC001 R104 C127 D133 IC102...
- Page 94 3. Drive circuit of the indoor fan motor CN 2 Primary 280V C208 Q201 Primary 18.5V C203 D201 Indoor fan motor R201 Power siganl of indoor fan(from Q202 pin 57 of microcomputer) Q203 IC681 Primary 0 V Rotation speed feedback signal (to pin of microcomputer) Output signal of indoor fan (to pin of microcomputer)
- Page 95 4. Remote control reception circuit Remote control Q821 light-receiving unit R822 R821 Ⅰ C821 C822 C821 R640 R823 Remote control VOUT reception input Microcomputer IC601 Fig. 4-1 [Typical communication waveform] Approx. 400 ms. Remote control reception input (pin of microcomputer) Beep (reception tone) Enlarged reception waveform Approx.
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Page 96: Humidity Sensor Circuit
5. Room temperature heat exchanger thermistor circuit Thermistor characteristics (microcomputer input voltage) Microcomputer IC601 Room temperature Ｃ Ｎ ４ thermistor Room temperature thermistor input R406 Heat exchanger thermistor input R407 Heat exchanger thermistor Thermistor temperature （℃） Fig. 5-2 Fig. 5-1 Thermistor characteristics (voltages between thermistor ends) The room temperature and the temperature of the indoor heat exchanger pipe... - Page 97 7. Indoor/outdoor communication circuits Indoor unit side Outdoor unit side Power plug Power relay Inverter circuit 12Ｖ Terminal board temperature fuse C807 Outdoor microcomputer Ｔ301 Indoor transmission circuit Ｒ342 Ｃ341 L801 R804 C804 Indoor microcomputer (IC601) Outdoor Ｑ331 R803 Indoor/outdoor communication Outdoor reception chopper output (30kHz)
- Page 98 8. Stepping motor drive circuit Microcomputer IC601 φ4 Vertical vane, left － φ4 φ3 Vertical vane, left － φ3 φ2 Vertical vane, left － φ2 φ1 Vertical vane, left － φ1 Vertical vane motor CN15 φ4 Lateral vane － φ1 φ3 Lateral vane －...
- Page 99 9. High Voltage generator circuit １ ２ Ｖ Ｖin １ Microcomputer Electrode High-Voltage Ｒ ７ ０ ５ abnormality １ ９ ２ High-Voltage (Lo:abnormal generator Ｇ Ｎ Ｄ /Hi:normal) ３ ０ Ｖ ０ Ｖ REM(ＯＮ／Ｏ Ｆ Ｆ) １ ８ ４ High voltage output Ｒ...
- Page 100 10. Cleaning unit drive circuit R906 Q902 Microcomputer R911 IC601 Ｐ Ａ－ ４ Ｐ － （ vertical ） IC911 IC682 Ventilator power (Lo, OFF; Hi, ON) Clock signal STBY signal Excitation mode R912 setting Forward/reverse signal Cleaning unit driving motor R913 Vref setting C915...
- Page 101 ・The cleaning unit drive circuit comes equipped with a current detection circuit. Normally it runs in silent mode. When the load increases, however, it will switch to high-power mode and increase the torque of the cleaning unit driving motor. ・The peak motor current in silent mode is about 83 mA, with the peak motor current in high power mode being between about 200 mA and 300 mA.
- Page 102 11. Infrared human presence sensor circuit Sensor P.W.B. Control P.W.B. IC601 R737 microcomputer (1/2) (2/2) Infrared sensor(left) R731 C732 Infrared R732 sensor(right) C731 (1/2) (2/2) Fig.11－1 With the infrared senson,the air conditioner can detect the activity level in a room and adjust the ・...
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Page 103: Service Call Q&A
SERVICE CALL Q&A , RAS-18SH3 MODEL RAS-10SH3, RAS-14SH3 Cooling operation The compressor sometimes Cooling when the room Check if the heat stops during cooling. temperature is low may exchanger of the indoor cause the heat exchanger unit is covered with dew. - Page 104 Common, etc. In "automatic wind speed" mode, the In wind speed "automatic" mode, This does not abnormal. It indoor fan changes from strong wind the product will sense the heat is because the cold wind exchange temperature and, to weak wind to slight wind. prevention is working.
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Page 105: Wireless Remote Control
I would like to clean the inside of A commercially available detergent or something the air-conditioner with a similar may crack the resin parts or block the commercially available detergent. drainage channel. It may also result in water dripping or electric shock. Therefore please do not use any such product. - Page 106 This occurs when the room temperature and humidity I set the "sleep" timer during have reached their settings during dehumidification and operation.But the air-conditioner is in a pause. The product will begin the indoor fan will not run (it will again to run within about 3 minutes.
- Page 107 I tried in vain to change the setting during You cannot set "quick dehumidification" to "quick laundry" dehumidification and comfortable cooling or "dew control" mode. by using the "humidity" button on the remote control unit. The temperature setting field on the The product will give a display when you operate the product remote control unit displays in "auto"...
- Page 108 Cleaning unit After power-on (after connecting ・For an operation check on filter cleaning, the cleaning unit will make one go and return. At that power plug, after a power failure, after the breaker is turned on), the time, the "clean" lamp will go on. ・The one-time operation check will last about 7 product will begin cleaning its filter.
- Page 109 The cleaning unit has stopped midway. ・Didn't you open the front panel while cleaning the filter? (The "clean lamp" will go on for 1 second and go dimmed for 1 second.) ・After servicing the filter cleaning wiper, did you move the cleaning unit to the right end by remote control? ・Are the micro-mesh, stainless steel filter, dust catcher, and filter cleaning wiper, and wiper cover correctly...
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Page 110: Troubleshooting
TROUBLE SHOOTING Inspection instructions Two-way valve coil Indoor fan motor Indoor electrical Outdoor electrical parts parts Power supply Compressor motor Relay Warning 0V line Note that the 0 V line of the outdoor electrical parts and Control circuit Control circuit the primary power circuit of the indoor electrical parts Grounding... - Page 111 How to stop energizing the discharge procedure and power circuit Warning Cautions ・The smoothing capacitor is charged at a voltage of about 264 to 358 V across it. ・For an energization check of each part of the circuit of the outdoor electrical parts, the power circuit is energized ...
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Page 112: Other Instructions
Other instructions (1) Detaching and reattaching the receptacles for tab terminal All the receptacles for connecting tab terminals are with a locking mechanism. Forcibly pulling any such receptacle without unlocking it will destroy it. Be on guard. When reconnecting it, insert it securely all the way home. ・Receptacle types and how to unlock them Mild resin cover Cancel button... -
Page 113: Troubleshooting Support
Troubleshooting support Function Description See page № Self-diagnosis display ・The failure mode detected on the indoor unit side is displayed by [Display on the indoor blinking the "timer lamp". And the failure mode detected on the unit side] outdoor unit is displayed by blinking the "monitor lamp". ・If the outdoor unit side detects a failure, the product will first conduct several operation retrials and then blink the "monitor lamp". - Page 114 Self-diagnosis display function (indoor side display) While the "timer lamp" (orange), the "clean lamp" (yellow), the "mist and air purification lamp" (yellow) or "monitor lamp" (yellow) of the indoor unit is blinking, troubleshoot the product while referring to the table below. 1.
- Page 115 Self-diagnosis memory function Failure modes stored in the nonvolatile memory of the indoor unit are redisplayed by remote control. This is effective in checking the failure mode after you turned off or restarted the product without checking the frequency of lamp blinking on the self-diagnosis display.
- Page 116 Operation with the forcible cooling switch The product can be forcibly made to perform cooling when you wish to collect the refrigerant or do some troubleshooting. The compressor will be in operation regardless of the room temperature. Therefore avoid running the product continuously for a long time.
- Page 117 Diagnosis and troubleshooting of indoor electric parts, outdoor electric parts and refrigerating cycle Initiating troubleshooting Are the "timer lamp" (orange) or the "monitor lamp" Perform troubleshooting according to the (yellow) of the indoor unit blinking? self-diagnosis display. The product will begin to run in response to a remote control setting: "cooling mode, temperature setting 16 ℃"...
- Page 118 Checking the indoor unit electrical parts Introduction First check the failure phenomenon and status, and then move on to elaborate diagnosis. Initiating troubleshooting Move on to "Timer lamp blinking" . Is the "timer lamp" (orange) of the indoor unit blinking? (page 101 and subsequent) Go on to "Checking the electrical parts Is the "monitoring lamp"...
- Page 119 1. Failure phenomenon: The power will not become turned on. ] Neither initialization, remote control, nor any other step works on the vane position at power-on. Situation [ Estimated failure ・ 3 A fuse blown out Estimated cause of fuse blowout ・ Abnormally high voltage applied to the power supply ・...
- Page 120 2.Failure phenomenon: The product will not receive a remote control signal. [ Situation ] The product does not receive a remote control signal. It is not very responsive. (The product does run normally in response to the emergency operation switch.) [ Estimated failure ・...
- Page 121 How to identify sources of jamming in the reception of remote control signals [ Situation ] The product may become poorly responsive to remote control signals due to external factors even though the product itself is trouble-free. [ Estimating sources of jamming ] Identify the installation status of the air-conditioner and the indoor and outdoor environments to identify possible causes of the jamming.
- Page 122 Effects of other Checking points electrical products ・Check the effects of light and power noises coming from other electrical products. ・Turn on and off the electrical products, turn off the power and turn on the power, and check their effects on the reception of remote control signals.
- Page 123 3. Failure phenomenon: The compressor will not run. [ Situation ] The compressor will not run (the same state as the thermometer turned off), the product receives remote control signals normally. The self-diagnosis lamp (LD301) of the outdoor unit blinks once or becomes turned off. [ Estimated failure locations ] ・Room temperature thermistor, heat exchanger thermistor ・Microcomputer peripheral circuit [ Diagnosis flow ]...
- Page 124 4. Failure phenomenon: The fan motor will not stop. [ Situation ] I have conducted the stop operation on the product by remote control, but the indoor fan motor will not stop. (It stopped about 3 minutes later.) [ Estimated failure locations ] ・Indoor fan motor ・Fan motor drive circuit [ Diagnosis flow ]...
- Page 125 5. Failure phenomenon: The clean lamp is blinking (on for 4 seconds, off for 1 second). The clean lamp is blinking (on for 4 seconds, off for 1 second). [Situation] The cleaning unit is not operating. The self-diagnosis memory stores "timer lamp blinked 18 times". [Estimated failure locations] ・Mechanical lock of the cleaning unit ・The connectors CN8 and CN10 loose, lead wire break...
- Page 126 6.Failure phenomenon:The infrared sensor lamp is blinking(on for 4 seconds,off for 1 second) <Situation> The infrared sensor lamp is blinking(on for 4 seconds,off for 1 second) The infrared human presence sensing function can not be in operation or the sense is blunt. 「Timer lamp is blinking for 20 times」is kept in self-diagonsis memory function.
- Page 127 Infrared sensor checking points Check assembly ·Is the assembly position and appearance about the sensor cover and the sensor ok? ⇒Check if there is dirt or nick on the cover. ·Is the assembly about the sensor unit ok? ⇒Check the assembly position between the sensor unit and the dew pan.(2 lugs) ·Is the assembly about the infrared sensor P.W.B.
- Page 128 7. Timer lamp blinking: blinking twice ] The product is giving a display to indicate that it is performing forcible cooling. Situation (This is not a sign of a breakdown.) 8. Timer lamp blinking: blinking three times ] The timer lamp blinks three times and the product will not operate. Situation [Estimated failure locations] ・...
- Page 129 9. Timer lamp blinking: blinking 5 times [Situation] The timer lamp blinks 5 times while the product was stopped. [Estimated failure location] ・Fused contact in the power relay [Caution] ・The failure display is given if the power relay contact has refused to be turned off for 24 consecutive hours while the product is stopped.
- Page 130 10. Timer lamp blinking: blinking 9 times [Situation] The timer lamp blinks 9 times and the product will not run. [Estimated failure location] ・Loose connector, wire break, or short-circuit in the room temperature thermistor, heat exchanger thermistor, or humidity sensor [Cautions] ・Starting the product by remote control will initiate failure detection.
- Page 131 11. Timer lamp blinking: blinking 10 times [Situation] The timer lamp blinks 10 times and the product will not run. [Estimated failure locations] ・Loose connector or wire break in the indoor fan motor ・Indoor fan motor mechanically locked ・Indoor fan motor ・Indoor fan motor drive circuit [Diagnosis flow] Initiating troubleshooting...
- Page 132 12.Timer lamp blinking:blinking 11 times <Situation> Electric dust collector(High coltage generator)is not operating. <Estimated failure locations> ・High voltage generator or its electrode out of order. ・High voltage generator electrode dirtied. ・CN14 connector is loose、lead wire break. <Cautions> ・This failune modes can be redisplayed by remote controller.Please refer to 「Self-diagnosis memory function」.
- Page 133 13. Timer lamp blinking: blinking 12 times [Situation] The timer blinks 12 times and the product will not run. [Estimated failure locations] ・Erroneous connection in the indoor-outdoor connection line (F cable) ・Wire break or poor insertion of the indoor-outdoor connection line (F cable) ・Electrical parts in the outdoor unit ・Communication error due to noise in other home electronics ※This does not constitute a failure in the air-conditioner.
- Page 134 Checking the electrical parts of the outdoor unit – 132 –...
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- Page 138 How to run the product with the outdoor unit test switch 1) When you are obliged to start the product on the outdoor unit side for the purpose of servicing 1. Turn off the power, wait for at least 10 seconds, and turn the power back on. 2.
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Page 139: How To Operate The Outdoor Unit Independently
HOW TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY 1. Connect the large dia. pipe side and small dia. pipe side service valves using a pipe. Parts to be prepared Outdoor unit Connect the small diameter ser- Reducing union Compressor vice value and the large diame- Large dia.service valve 2/8"... - Page 140 Lighting mode of the self-diagnosis lamp – –...
- Page 141 Lighting mode of the self-diagnosis lamp DC VOLTAGE MEASURING POINT(+)(IPM P) DC VOLTAGE MEASURING POINT(-)(IPM N) TEST SWITCH LD303(RED) LD302(RED) LD301(RED) SELF-CHECK CONNECTOR（CN30） OUTDOOR FAN CONNECTOR（CN24） 1.IF AC VOLTAGE INPUT ABNORMAL (OVER STANDARD VOLTAGE±10%), -FOLLOW STANDARD AC VOLTAGE INPUT 2.IF AC VOLTAGE INPUT IS NORMAL (WITHIN±10%),-CHANGE P.W.B.s 1.DIAGNOSIS FOR REVERSING VALVE OPERATION ERROR;...
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Page 142: Checking The Remote Controller
CHECKING THE REMOTE CONTROLLER Is battery polarity correct? Install the battery in the correct polarity. Is the battery check sign + – Replace the battery. flashing? Turn on an AM radio, bring the remote control switch within 15 cm of the radio, and press the ON/OFF button. -
Page 143: Parts List And Diagram
PARTS LIST AND DIAGRAM 62 64 – 141 –... - Page 144 MODEL RAS-10SH3, RAS-14SH3, RAS-18SH3 PARTS NO. Q'TY/ PARTS NAME UNIT RAS-10SH RAS-14SH3 RAS-18SH3 HWRAS-SX10HAK CABINET HWRAS-SX10HAK COVER (LOWER) (LEFT) HWRAS-SX10HAK COVER (LOWER) (RIGHT) HWRAS-SX10HAK COVER (REAR) (RIGHT) HWRAS-SX10HAK MOUNTING PLATE HWRAS-SX10HAK TANGENTIAL AIR FLOW FAN HWRAS-SX10HAK FAN MOTOR HWRAS-SX10HAK FAN SUPPORT ASSEMBLY...
- Page 145 MODEL RAS-10SH3, RAS-14SH3, RAS-18SH3 HWRAS-SX10HAK STEPPING MOTOR (HORIZONTAL AIR DEFLECTOR) (LEFT) HWRAS-SX10HAK STEPPING MOTOR (HORIZONTAL AIR DEFLECTOR) (RIGHT) HWRAS-SX10HAK HORIZONTAL AIR DEFLECTOR ASSEMBLY HWRAS-SX10HAK HORIZONTAL AIR DEFLECTOR SUPPORT HWRAS-SX10HAK STEPPING MOTOR (VERTICAL AIR DEFLECTOR) HWRAS-SX10HAK DRAIN HOSE HWRAS-10SH3 ION MIST UNIT HWRAS-SX10HAK COVER (P.W.B INDICATION)
- Page 146 HWRAS-SX10HAK CORD (4P) (FOR AUTO SWEEP MOTOR) HWRAS-SX10HAK P.W.B. (MIST SENSOR) HWRAS-SX10HAK SB-COVER (FOR MIST SENSOR) HWRAS-SX10HAK CORD (4P) (FOR MIST SENSOR) HWRAS-SX10HAK FILTER CLEANING UNIT HEAT INSULATING MATERIAL HWRAS-SX10HAK (FOR REFRIGERATING PIPE SET WHEN INSTALLING) – 144 –...
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- Page 148 MODEL RAC-10SH3, RAC-14SH3 PARTS Q'TY/ PARTS NAME UNIT RAC-10SH3 RAC-14SH3 HWRAC-SX10HAK BASE HWRAC-SX10HAK COMPRESSOR HWRAC-SX10HAK COMPRESSOR RUBBER HWRAC-SX10HAK PUSH NUT HWRAC-SX10HAK CONDENSER ASSEMBLY HWRAC-SX10HAK REVERSING VALVE (INCLUDING 2S/3S-VALVE) HWRAC-SX10HAK 2S-VALVE HWRAC-SX10HAK 3S-VALVE HWRAC-SX10HAK SOUND PROOF COVER HWRAC-SX10HAK SOUND PROOF COVER HWRAC-SX10HAK SOUND PROOF COVER HWRAC-SX10HAK...
- Page 149 MODEL RAC-10SH3, RAC-14SH3 HWRAC-SX10HAK DRAIN PIPE HWRAC-SX10HAK BUSH ASSEMBLY HWRAC-SX10HAK FRONT COVER ASSEMBLY HWRAC-SX10HAK DISCHARGE GRILL HWRAC-SX10HAK SIDE COVER (LEFT) HWRAC-SX10HAK HANDLE HWRAC-SX10HAK SIDE COVER (RIGHT) HWRAC-SX10HAK VALVE COVER HWRAC-SX10HAK THERMISTOR COVER (OUTDOOR THERMISTOR) HWRAC-SX10HAK THERMISTOR (OUTDOOR TEMPERATURE) HWRAC-SX10HAK TOP COVER HWRAC-SX10HAK ELECTRIC PARTS COVER HWRAC-SX10HAK...
- Page 150 MODEL RAC-18SH3 – –...
- Page 151 MODEL RAC-18SH3 PARTS Q'TY/ PARTS NAME UNIT RAC-18SH HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX18HAK & HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX18HAK – 149 –...
- Page 152 MODEL RAC-18SH3 HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX18HAK HWRAC-SX18HAK HWRAC-SX10HAK HWRAC-SX10HAK HWRAC-SX18HAK – 1 –...
- Page 153 RAS-10SH3 / RAC-10SH3 HHAW NO. 0060E RAS-14SH3 / RAC-10SH3 RAS-18SH3 / RAC-18SH3...