GCHV CHV Mini Series, Service Manual, Page: 119 / 128

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CHV
Mini
Series
Ser
vice
Manual
CHV Mini VRF 50/60Hz
5.6 E8: TP Exhaust temperature sensor fault
5.7 E9: AC over-voltage / under-voltageprotection
E8
Check if the TP exhaust temperature sensor
connector is loose
Yes
Connect it well
No
Pull out the exhaust temperature sensor
plug and measure the resistance
If multimeter displays 0Ω or OL
Normal resistance: 50K
Replace the sensor
Yes
Replace outdoor main PCB
E9
Check whether the input voltage is lower than 165V or higher
than 265V
Yes
Check whether the power wire connection is loose
Contact the power supply
department
No
Connect it well
No
If all the above are normal, replace the main PCB
Yes