54
Failure code
LD
indication
on master
unit
Indication
on wired
controller
(hex)
Failure code
definition
Failure description
Remarks
22-1
16
Two1 water heat
exchanger outlet
water temperature
1 failure
AD value is detected below 11(open
circuit) or above 1012 (short circuit)
for 60 secs.
Resumable
22-2
16
The trachea
outdoor sensor
Tsuc fault
23-0
17
Discharging sensor
Tdi failure
AD value is detected below 11(open
circuit) or above 1012 (short circuit)
for 60 secs. If tao≤0
℃
, no detect of
the open circuit (ad value is blow 11).
Resumable
23-1
17
Discharging sensor
Td1 failure
23-2
17
Outdoor gas pipe
temp, sensor Tdp/
Tsuc failure
24-0
18
Oil temp. sensor
Toilp failure
AD value is below 11(open circuit)
or above 1012(short circuit), alarm.
If Tao<0
℃
, no open circuit failure
alarm; if Tao>=0
℃
and ET>=0
℃
, no
open circuit failure alarm in 5 minutes Resumable
24-1
18
Oil temp. sensor
Toili failure
AD value is below 11(open circuit) or
above 1012(short circuit), alarm. If
Tao<0
℃
or not in the normal running
condition, no open circuit failure
alarm;
25-0
19
Inlet temp. of heat
exchanger toci1
failure
AD value is below 11(open circuit)
or above 1012(short circuit), alarm.
No handling of this abnormal sensor
when cooling mode is operating.
Resumable
25-1
19
The outlet
temperature of the
heat exchanger
Toci2 fault
26-0
1A
Outdoor and indoor
communication
failure
For continuous 200 cycles’detection,
connected indoors cannot found.
Resumable
26-1
For continuous 270 secs detection,
qty of indoors is less than the set qty.
26-2
For continuous 170 secs detection,
qty of indoors is more than the set qty.
