P7 Overheating Protection On Cooling Mode - Friedrich Chill Premier Inverter Series Service Manual

3.2.14 P7---Overheating protection on Cooling mode

P7 Overheating protection on Cooling mode

On heating mode, when IDU evaporator coil temperature IPT≥144°F , ODU PCB will switch off outdoor unit and
show P7 failure code.
Outdoor
motor
normal?
Sensor loosing
from connector?
The sensor open
or short circuit?
Replace IPT sensor
No
P7 disappear?
Replace Display PCB
38
TROUBLESHOOTING
Display P7
No
fan
works
Yes
Yes
No
Yes
Yes
End
Yes
Fan motor
broken?
No
Yes
Re-connect sensor
Replace fan motor
No
P7 disappear?
No
P7 disappear?
Yes