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Failure code
CODE Error code denition Notes
51-0 LEVa overcurrent protection Recoverable
51-2 LEVb overcurrent protection Recoverable
52-0 LEVa open circuit disconnection failure Recoverable
52-2 LEVb open circuit disconnection failure Recoverable
53 Too low CT electric current or electric sensor failure Recoverable
54 Communication failure with subcooling module Recoverable
57
Communication failure between subcooling module and upper unit
(send from subcooling module)
Recoverable
58
Temp. sensor(Tc1)failure of subcooling module(send from subcooling
module)
Recoverable
59
Temp. sensor(Tc2)failure of subcooling module(send from subcooling
module)
Recoverable
60 Subcooling module failure(send from subcooling module) Recoverable
61 Subcooling module failure(send from subcooling module) Recoverable
62 Subcooling module failure(send from subcooling module) Recoverable
63 Subcooling module dialing setting failure Unrecoverable
64 Too high CT electric current Unrecoverable after locking
68 Communication failure with hot water IO board Recoverable
69 Tank temp failure of hot water IO board Recoverable
70 Other failures of hot water IO board Recoverable
71-0 Upper DC FAN failure Unrecoverable after locking
71-1 Lower DC FAN failure
74 System emergency stop failure Recoverable
81 Radiator of transducer temp too high Unrecoverable after locking
82 Compressor current protection Unrecoverable after locking
83 Outdoor unit model dialing setting failure Unrecoverable
87 Defrosting with too low water temp Recoverable
110 Module hardware excess current
Locking after three consecutive times in
an hour, unrecoverable after locking
111 Compressor out of step Recoverable
112 Radiator of transducer temp too high Recoverable
114 Supply voltage failure of inverter Recoverable
116 Communication abnormity between transducer and control PCB Recoverable
117 Transducer over current (software) Recoverable
118 Compressor startup failure Recoverable
119 Current detecting circuit abnormity of transducer Recoverable
121 Module power supply abnormity Recoverable
122 Power supply of inverter board is abnormity Recoverable
124 Radiator temp. sensor abnormity Recoverable
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