Operation Manual

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When error happens
A list of error code
Remote
controller
Error code
LED on heat pump unit
7-segment
display
Contents of inspection
Green Red
No display Keep flashing Stay off Normal
Power line anomaly
No display
E1 Keep flashing Stay off Normal
Communication error between remote controller and heat pump unit
E10 Keep flashing Stay off Normal Excessive connected number of heat pump units to the remote controller
E31 Keep flashing 1-time flash E31
Duplicated address No. of heat pump unit
Address setting error of heat pump unit
E32 Keep flashing 1-time flash E32
Open phase on power source
Reverse phase on power source
E36 Keep flashing 1-time flash E36-1 Discharge pipe temperature anomaly (Tho-D1)
E37 Keep flashing
1-time flash E37-1 Heat exchanger temp. sensor 1 fault (Tho-R1)
2-time flash E37-2 Heat exchanger temp. sensor 2 fault (Tho-R2)
3-time flash E37-3 Heat exchanger temp. sensor 3 fault (Tho-R3)
4-time flash E37-4 Heat exchanger temp. sensor 4 fault (Tho-R4)
5-time flash E37-5 Fault of inlet water temp. sensor 1 on gas cooler (Tho-W1)
6-time flash E37-6 Fault of outlet water temp. sensor 2 on gas cooler (Tho-W2)
Keep flashing
E37-7 Fault of inlet gas temp. sensor 1 on gas cooler (Tho-G1)
E37-9 Fault of outlet gas temp. sensor 3 on gas cooler (Tho-G3)
E38 Keep flashing 1-time flash E38 Outdoor air temp. sensor fault (Tho-A)
E39 Keep flashing
1-time flash E39-1 Discharge pipe temp. sensor fault (Tho-D1)
3-time flash E39-3
Fault of inlet temp. sensor 1 on intermediate receiver (Tho-M1)
E40 Keep flashing 1-time flash E40 High pressure anomaly (HP switch 63H1-1 activated)
E41 Keep flashing 1-time flash E41-1
Power transistor overheat (for CM1) (5 times within 60 minutes)
E42 Keep flashing 1-time flash E42-1 Current cut (for CM1)
E45 Keep flashing 1-time flash E45-1
Communication error between inverter PCB and control PCB (CM1)
High pressure anomaly (HP switch 63H-1 activated)
E48 Keep flashing
1-time flash E48-1 Outdoor fan motor 1 anomaly (FMo1)
2-time flash E48-2 Outdoor fan motor 2 anomaly (FMo2)
E49 Keep flashing 1-time flash E49-1 Low pressure anomaly (LP sensor PSL1 activated)
E51 Keep flashing 1-time flash E51-1
Power transistor 1 overheat (for CM1) (15 minutes continuously)
E52 Keep flashing
1-time flash E52-1
Fault of hot water temp. sensor 1 on unvented cylinder (Tht-1)
2-time flash E52-2 Fault of hot water temp. sensor 2 on unvented cylinder (Tht-2)
3-time flash E52-3 Fault of hot water temp. sensor 3 on unvented cylinder (Tht-3)
4-time flash E52-4 Fault of hot water temp. sensor 4 on unvented cylinder (Tht-4)
5-time flash E52-5 Fault of hot water temp. sensor 5 on unvented cylinder (Tht-5)
6-time flash E52-6 Fault of hot water temp. sensor 6 on unvented cylinder (Tht-6)
Keep flashing
E52-7
Fault of hot water temp. sensor 7 on unvented cylinder (Tht-7)
E52-8 Fault of hot water temp. sensor 8 on unvented cylinder (Tht-8)
E52-9 Fault of hot water temp. sensor 9 on unvented cylinder (Tht-9)
E53 Keep flashing
1-time flash E53-1 Suction pipe temp. sensor 1 fault (Tho-S1)
3-time flash E53-3 Injection inlet temp sensor 1 fault (Tho-inj1)
E54 Keep flashing
1-time flash E54-1
Disconnection of low pressure sensor 1(PSL)
Anomalous output of low pressure sensor 1
2-time flash E54-2
Disconnection of high pressure sensor 1(PSH)
Anomalous output of high pressure sensor 1
3-time flash E54-3
Disconnection of intermediate pressure sensor 1(PSM)
Anomalous output of intermediate pressure sensor 1
E55 Keep flashing 1-time flash E55-1 Under-dome temp. sensor 1 fault (Tho-C1)
E56 Keep flashing 1-time flash E56-1 Power transistor temp. sensor 1 fault (Tho-P1)
E58 Keep flashing 1-time flash E58-1 Compressor anomaly by loss of synchronism (CM1)
E59 Keep flashing 1-time flash E59-1 Compressor start-up failure (CM1)