TCL U-MATCH-R32 Series

TCL U-MATCH-R32 SERIES DC INVERTER AIR CONDITIONERS SERVICE MANUAL
101
3.3.13 P8---Outdoor Overtemperature/Under-temperature protection
When environment temperature as below condition, the compressor will stop working, after 200s delay,
the IDU will show P8 failure code.
(1). On Cooling or Dry mode: ODU ambient temperature: OAT＜-15℃(5℉) or OAT＞60℃(140℉);
(2). On Heating mode:
OAT≥40℃(104℉)
Display P8
Ambient
temperature under
spec. range?
No
No enough space for
ODU ventilation?
Yes
Change ODU
location
Yes
No
No
P8 disappear?
Yes
The sensor open
or short circuit?
No
Yes
Replace OAT sensor
Yes
P8 disappear?
No
Replace ODU PCB
End