55
Failure code
LD
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
definition
Failure description
Remarks
27
1B
Oil temp.
too high protection
(Toil)
Toil≥120degree(E) 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, confirm the failure.
Once
confirmation,
Un-
Resumable
28
1C
High pressure
sensor Pd failure
AD value is below 11(open circuit)
or over 1012(short circuit) for 30
seconds, in defrosting and within 3
minutes after defrosting, no alarm
Resumable
29
1D
Low pressure
sensor Ps failure
AD value is below 11(open circuit)
or over 1012(short circuit) for 30
seconds, in defrosting and within 3
minutes after defrosting, no alarm
Resumable
30-0
1E
High pressure
switch HPSi failure
Power on, OFF is confirmed for 2 secs
continuously, alarm.
Once
confirmation,
Un-
Resumable
30-1
1E
High pressure
switch HPS1 failure
30-2
1E
High pressure
switch HPS2 failure
30-3
1E
Water flow switch
WQS failure (Water
Cooled VRF)
Disconnected for 10 secs
continuously, alarm. Three times an
hour, failure confirmed.
32-0
20
Outlet temp.Of
subcooler tsco
failure
AD value is below 11(open circuit)
or over 1012(short circuit) for 30
seconds, in defrosting and within 3
minutes after defrosting, no alarm
Resumable
32-1
20
Liquid pipe SC
temp.of subcooler
Tliqsc failure
33-0
21
EEPROM
(AT24C04)
failure
EEPROM communication failure
Once
confirmation,
Un-
Resumable
33-1
21
EEPROM data check failure(model
code, check sum etc.)
33-2
21
EEPROM data check failure(data
beyond limit, reverse sequence etc.)
