Haier MVHP036MV2AA Installation Manual page 24

Failure code
Digital tube Indication
indication on wired
on master controller
unit (hex)
62 62
63 63
64 64
71-0 71-0
71-1 71-1
75 75-0
75-4 75-4
78 78
81 81
82 82
83 83
108 108
109 109
110 110
111 111
112 112
113 113
Failure code
Failure description
definition
Valve plate module
error(sending by Reserved
valve plate)
Valve plate dial No valve plate module dial but the valve plate module is
setting error detected.
CT current is too CT current exceeds specified value, 3 minutes after
high recovery
Upper DC motor
Running at speed below 20rpm for 30s, or at speed of
blocked
70% lower than the target for 2 minutes, 2 minutes and 50
seconds later after stop, resume automatically. It occurs 3
Lower DC motor
times in an hour, confirm the failure.
blocked
No pressure drop
In 1 minute after INV compressor starts up, Pd-Ps≤0.1MPa,
between high
then stop. 180 seconds later, resume automatically. If it
pressure and low
occurs 3 times in an hour, confirm the failure.
pressure
Too small pressure If Pd-Ps≤0.2MPa for 5 minutes, the outdoor unit protection
drop between high stop.
pressure and low • 3 minutes after stopping protection, restart. If it occurs 3
pressure times in an hour, confirm the failure.
Compressor running in cooling mode, Ps<0.2MPa for 30
minutes; compressor running in heating mode, Tsi - ET>20;
Lack of refrigerant
LEV will fully open for 60 minutes, the unit will output lack of
refrigerant alarm,unit will not stop.
IPM modular temp.
IPM modular temp.≥185°F(85°C)
too high protection
Compressor Compressor current exceeds specified value, 3 minutes
current protection after recovery
Outdoor model set
Model and the number of fans do not match
error
Transient over
current in IPM
Transient over current in IPM module rectifier side software
module rectifier
side software
Current detection
Current detection circuit abnormality
circuit abnormality
IPM modular IPM modular over current, in short circuit, over heat, voltage
protection (F0) too low of control circuit.
Compressor out of In the course of compressor startup or running, the unit can
control not detect the rotor position, or not connecting compressor.
Radiator of
transducer temp. Radiator temp. too high
too high
Transducer
Output current of transducer is too high
overload
22
Remarks
Resumable
Once
confirmation,
un-resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Once
confirmed,
unresumable
Once
confirmed,
unresumable
--
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Un-resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable