Haier AU042FPERA - Page 45

43
Digital tube
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
denition
Failure description Remarks
62 62
Valve plate
module
error(sending by
valve plate)
Reserved Resumable
63 63
Valve plate dial
setting error
No valve plate module dial but the valve plate module is detected.
Once
conrmation,
un-resumable
64 64
CT current is too
high
CT current exceeds specied value, 3 minutes after recovery
3 times in an
hour, conrm
failure; once
conrmation, un-
resumable
71-0 71-0
Upper DC motor
blocked
Running at speed below 20rpm for 30s, or at speed of 70% lower
than the target for 2 minutes, 2 minutes and 50 seconds later after
stop, resume automatically. It occurs 3 times in an hour, conrm
the failure.
Once
conrmation, un-
resumable
71-1 71-1
Lower DC motor
blocked
75 75-0
No pressure drop
between high
pressure and low
pressure
In 1 minute after INV compressor starts up, Pd-Ps≤0.1MPa,then
stop. 180 seconds later, resume automatically. If it occurs 3 times
in an hour, conrm the failure.
Once
conrmed,
unresumable
75-4 75-4
Too small pressure
drop between high
pressure and low
pressure
If Pd-Ps≤0.2MPa for 5 minutes, the outdoor unit protection stop.
• 3 minutes after stopping protection, restart. If it occurs 3 times in
an hour, conrm the failure.
Once
conrmed,
unresumable
78 78 Lack of refrigerant
Compressor running in cooling mode, Ps<0.2MPa for 30 minutes;
compressor running in heating mode, Tsi - ET>20;
LEV will fully open for 60 minutes, the unit will output lack of
refrigerant alarm, unit will not stop.
--
81 81
IPM modular
temp. too high
protection
IPM modular temp.≥185°F(85°C)
3 times in an
hour, conrm
failure; once
conrmation, un-
resumable
82 82
Compressor
current protection
Compressor current exceeds specied value, 3 minutes after
recovery
3 times in an
hour, conrm
failure; once
conrmation, un-
resumable
83 83
Outdoor model set
error
Model and the number of fans do not match Un-resumable
108 108
Transient over
current in IPM
module rectier
side software
Transient over current in IPM module rectier side software
3 times in an
hour, conrm
failure; once
conrmation, un-
resumable
109 109
Current detection
circuit abnormality
Current detection circuit abnormality
3 times in an
hour, conrm
failure; once
conrmation, un-
resumable