TCL TCC-09C2HRH/DV, Service Manual, Page: 63 / 75

TCL Air Conditioner Service Manual
63
3.2.18 F7---Module temperature protection.
IPM overtemperature protection, when IPM temperature more than 95
℃ , it will show F7.
Display F7
IPM well contact
to heat sink?
Any dust or gap btw
IPM & heat sink?
Clean or adjust the gap
btw IPM and heat sink
Fix the screw
ODU cooling system
abnormal? Compressor
with big running current?
(9,12K:6-7A,
18,24K:7-9A)
Low pressure normal?
（ 0.8-1.2Mpa ）
IPM temperature
circuit abnormal?
Replace ODU PCB
Is the 2/3way valve
fully opened?
Open the valve
Condenser /
evaporator dirty?
Capillary blocked?
Replace capillary
Clean condenser /
evaporator
End
F7 disappear?
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check the screw
fully fasten?
Yes
No
No
F7 disappear?
No
Yes
End