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Heat Pump Water Heater
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL : APHWC501M(R5TT50F-SA1), APHWC801M(R5TT80F-SA1)
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or
transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from
which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
P/NO.: MFL71409304_Rev00. 09152023
CONFIDENTIAL
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Summary of Contents for LG APHWC501M
- Page 1 Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
- Page 2 Otherwise there is a risk of fire or electric shock. Install the panel and the cover of control box securely. Otherwise there is risk of fire or electric shock due to dust, water etc. Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 3 Check the drainage of the indoor unit after the repair. If drainage is faulty the water may enter the room and wet floor. Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 4 - W : Tank Water Product Grade - C : Standard Efficiency Nominal Capacity 6, 7 - e.g. 50gal → “50” Generation Features - M : Mid Temp. Water Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 5 EST092MBA Motor Type BLDC BLDC Locked Rotor Ampere(LRA) N/A(Inverter) N/A(Inverter) Compressor Oil Type Oil Charge Rated Load Ampere(208V / 240V) 3.3 / 3.1 3.3 / 3.1 Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 6 Sacrificial Sacrificial Foam Insulation inch 1.6 ~ 2.4 1.6 ~ 2.4 T&P Relief Valve Water Connection Location Side Side Water Connection Size inch Digital Display Wi-Fi Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 7 CN_TEMP_AIR Thermistor for suction pipe temperature CN_TH1 Thermistor for upper water tank temperature CN_TANK_D Thermistor for lower water tank temperature CN_TANK_U *EEV : Electronic Expansion Valve. Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 8 WIRING DIAGRAM APHWC501M / APHWC801M P/No.: MEZ68504006 Rev.: 00_100523 Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 9 CN_4WAY CN_TANK_U CN_DISP1 CN_COM2 CN_UVW CN_FAN CN_TH1 CN_TEMP_AIR CN_REMO RY_HEATER1_L CN_LINK CN_TOUCH RY_HEATER1_N CN_HEATER2_CT CN_HEATER1_CT CN_WL RY_HEATER2_L CN_FLOAT CN_WIFI RY_HEATER2_N CN_IN_N1 CN_OUT_N1 CN_L1 CN_COIL2 RY_COMP CN_COIL1 Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 10 263DZZ 263SZZ 2687U 263RVZ 2687P 135510 135515 237205 137211 249951 354210 HNMP13 2687M 159830 W4810 W1NF 549990 546710 349600 559014 2687D 554160 266010 550140 552116 661401 135500Z 778600 55211G HNVC13 35211E 352115 330871 352116 LOC. Heat Exchanger Quanity Rows 352410 Columns...
- Page 11 • Remove the 2 screws and the nut that secure the motor and fan. • Separate the motor bracket, motor, and fan. • Re-install the components by referring to the removal procedure, above. (Figure 5) (Figure 6) Copyright © 2023 LG Electronics Inc. All rights reserved. -11- Only training and service purposes.
- Page 12 • Mark, then disconnect the wires from the ECO by removing the 4 screws. • Remove 2 nuts that fasten the ECO. • Remove the ECO. • Re-install the components by referring to the removal procedure, above. Copyright © 2023 LG Electronics Inc. All rights reserved. -12- Only training and service purposes.