Gree CF01000730, Service Manual

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GREE Duct type split Air conditioner Inverter Series
91
Troubleshooting:
Yes
No
No
“
d5
”
midst pipe
temperature sensor
error
Is the terminal between
mainboard and ambient temperature
sensor loose or any foreign objects
inside the terminal?
If it is loosened or there are
foreign objects, retighten it
after treatment.
Check if the temperature
sensor is abnormal
Yes Replace temperature
sensor
Check if the circuit is
abnormal
Yes
Replace the main
control board
(22) “d6” Outlet pipe temperature sensor error
Error display: IDU displays .
Error judgment condition and method:
Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge
the range of AD value. If the sampling AD value exceeds upper limit and lower limit in 5 seconds
continuously, report the error.
Possible reason
：
1) Poor contact between outlet pipe temperature sensor and terminal in mainboard interface.
2) Outlet pipe temperature sensor is abnormal.
3) Detecting circuit is abnormal.
(23) “d9” Jumper cap error
Error display: IDU displays .
Error judgment condition and method:
Possible reason
：
If jumper cap model doesn’t match with mainboard, report the error:
1) Jumper cap is not installed.
2) Jumper cap model is wrong.
3) Detecting circuit is abnormal.