TCL TAC-18CSD/XA81I

TCL Air Conditioner Service Manual
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3.2.21 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 /
eva
p
orato
r
End
F7 disappear?
Y
es
No
No
No
No
No
No
No
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
Check the screw
fully fasten?
Y
es
No
No
F7 disappear?
No
Y
es
End