Haier AV08NMSETA, Installation Manual

Page: 28 / 33

26
LD
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
de fi nition
Failure description Remarks
29 1D
Low pressure
sensor Ps
failure
AD value is below 11(open circuit) or
over 1012(short circuit) for 30seconds,
in defrosting and within 3 minutes after
defrosting, no alarm
Resumable
30 30
High pressure
switch HPSi
failure If disconnect for 50ms continuously,
alarm. If alarm 3 times in an hour, con
fi rm
the failure
Once
con fi rmation,
un-resumable
33 33
EEPROM
failure
EEPROM failure
Once
con fi rmation,
un-resumable
34 34
Discharging
temp.too high
protection (Td)
Td ≥ 115degree at interval of 25msec
for twice continuously, and over the set
value, then stop and alarm; 3 minutes
later, resume automatically. If it occurs 3
times in an hour, con
fi rm the failure.
Once
con fi rmation,
un-resumable
35 35
4-way valve
reversing
failure
After 4-way valve is electri fi ed for 3
minutes, if the below conditions can be
met for continous 10 seconds, that is
conversing successfully:
1. this outdoor compressor is running
normally
2. Pd-Ps
≥ 0.6MPa, Otherwise, the system
alarms reversing failure.
Once
con fi rmation,
un-resumable
36 36
Oil temp. too
low protection
(Toil)
In normal operation, if Td<CT+6 for
continuous 5 minutes, the unit stops and
alarms.2 minutes and 50 seconds later,
resume automatically. If it occurs 3 times
in an hour, con
fi rm the failure
Once
con fi rmation,
un-resumable
39-0 39-0
Low pressure
sensor Ps too
low protection
After compressor is running (except
for residual operation), if in cooling,
Ps<0.05Mpa; in heating, Ps<0.03Mpa; in
oil return, Ps<0.03Mpa for continuous 5
minutes, alarm and stop. 2 minutes and
50 seconds later, resume automatically,
if it occurs 3 times in an hour, con
fi rm the
failure.
Once
con fi rmation,
un-resumable
39-1 39-1
Compression
ratio too high
protection
After compressor is running, compression
ratio 8. for continuous 5 minutes stop
and alarm.2 minutes and 50 seconds
later, resume automatically, if it occurs 3
times in an hour, con
fi rm the failure.
Once
con fi rmation,
un-resumable
Failure code