47
Failure code
LED
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
definition
Failure description
Remarks
33-0
21
EEPROM
(AT24C04)
failure
EEPROM communication failure
Un-
resumable
33-1
EEPROM data check failure(model code,
check, etc.)
33-2
EEPROM data logistic failure(data beyond
limit, reverse sequence, etc.)
34-0
22
Discharging
temp. too high
protection
（
Tdi
）
Tdi
／
Td1≥130
℃（
E
）
at interval
25msec, continuous 2sec, and over the
set value, then stop and alarm. The oil
temp. 10
℃
lower than the alarm condition
for 3 minutes after stop, then resume
automatically.
If it occurs 4 times in an hour, confirm the
failure.
Once
confirmed,
un-
resumable
34-1
22
Discharging
temp. too high
protection
（（
Td1
）
35-0
23
4-way valve
reversing
failure
After the 4-way valve is electrified for 3
minunts, if the below conditions can be
met for continuous 10 seconds, that is
conversing successfully:
※
Otherwise, stop protection.
（
Tao
＞
-10
℃，
β=0.60
；
Tao≤-10
℃，
β=0.40
）
*
4-way valve OFF starts up again after 3
minutes
*
If Thermo. OFF for 2 continuous times,
Error stop.
Once
confirmed,
un-
resumable
35-1
23
4-way valve
reversing
failure
If there is 4-way valve of submachine not
electrified after host heating detection starts
up for 20 min, alarm 35-1 failure.
36
24
Oil temp. too
low protection
（
Toili
）
In normal operation (exclude start up,
defrosting, oil return, remain, stop), if Toil
＜
CT+10
℃
for continuous 5 minutes,
the unit stops for 170 seconds and then
resumes automatically. If it occurs 3 time in
an hour, lock the alarm.
*
The same as Td too low protection
Once
confirmed,
un-
resumable
This outdoor unit compressor is running
normally
Tdp
－
Tdef1≥10
℃
Tdp
－
Tdef2≥10
℃
Pd
－
Ps≥β MPa
