Haier AV08IMVEVA Installation Manual page 38

Failure code
Digital tube
indication
Failure code definition
on master
unit
Oil temp.too high
27-0 protection
（Toil1）
Oil temp.too high
27-1 protection
（Toil2）
High pressure sensor Pd
28
failure
Low pressure sensor Ps
29
failure
High pressure switch
30-0
HPSi failure
High pressure switch
30-1
HPS2failure
33-0
33-2
EEPROM failure
33-3
Discharging temp.too
34-0
high protection（Td1）
Discharging temp.too
34-1
high protection（Td2）
4-way valve reversing
35-0
failure
4-way valve reversing
35-1
failure
Oil temp.too low
36-0
protection（Toil1）
Oil temp.too low
36-1
protection（Toil2）
Low pressure sensor Ps
39-0
too low protection
Compression ratio too
39-1 high
Protection
High pressure sensor Pd
40
too high protection
Toil ≧ 120℃ continuous 2sec exceeds the set value after
shutdown alarm; the alarm condition after stopping the oil
temperature below 10 degrees, automatic recovery after 2min50s.
Four times an hour to confirm the fault
AD value is below 11(open circuit)or over 1012(short circuit)for 30
seconds
AD value is below 11(open circuit)or over 1012(short circuit)for 30
seconds
If disconnect for 2s continuously,alarm.If alarm 3 times in an
hour,confirm the failure
AT24C04 EEPROM communication failure
AT24C04 EEPROM data check failure(model code,check sun etc)
AT24C04 EEPROM data check failure(data beyond limit,reverse
sequence etc)
Td ≧ 120℃ continuous 2sec exceeds the set value after shutdown
alarm; the alarm condition after stopping the oil temperature below
10 degrees, automatic recovery after 2min50s. Four times an hour
to confirm the fault
After 4-way valve is electrified for 10 minutes,if the below
conditions can be met for continous 10 seconds,that is conversing
successfully.
This outdoor compressor is running normally
Td1orTd2-Tdef1≥10℃＆ Toci-Tao≤5℃＆ Pd-Ps≥0.3MPa
Otherwise，the system alarms reversing failure
If it occurs 3 times in an hour,confirm the failure
After the start of the main outdoor machine 20min still have a child
of the four way valve is not on the electricity is reported 35-1 fault.
2 times an hour to confirm the fault。
In normal operation,if Toil ＜ CT+10℃ for continuous 5 minntes,the
unit stop and alarm.2 minutes and 50 seconds later,resume
automatically.If it occurs 3 times in an hour,confirm the failure
After compressor is running(except for residual operation),if
in cooling,Ps ＜ 0.01MPa or in heating，Ps ＜ 0.05MPa for
continuous 5 minutes，alarm and stop。2 minutes and 50
seconds later，resume automatically。If it occurs 3 times in an
hour，confirm the failure。
After compressor is running，compression ratio ε ＞ 10.0
forcontinuous 5 minutes ，stop and alarm。2 minutess and 50
Seconds later，resume automatically。If it occurs 4 times in an
hour，confirm the failure。
If Pd≥4.15MPa，alarm and stop，2 minutes and 50 seconds
later，resume automatically。If it occurs 3 times in an hour，
confirm the failure。
36
Failure description Remarks
Once
confirmation
un-resumable
resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable
Once
confirmation
un-resumable