Chigo CMV-50V9A-S, Service Manual

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board output parameters are normal, if abnormal ,please
replace the main control board.
PC
Outdoor ambient
temperature
over-temperature
protection (including high
and low)
1
、
Check whether the outdoor ambient temperature is too
high or too low, when the ambient temperature is lower
than (T> -20, T <55), this fault automatically discharges;
2
、
Check whether the outdoor temperature sensor’s ring
temperature parameters are normal, if abnormal ,please
replace the sensor;
3
、
If the above are normal, check whether the main control
board’s output parameters are normal, f abnormal ,please
replace the main control board.
PE
EEPROM reading error
(outdoor unit)
1
、
Check whether there are false weld and bad contact etc
between the EEPROM chip block and the electronic control
board ;
2
、
Check whether the EEPROM chip pin is broken foot and
the direction of installation is in line with the EEPROM block;
3
、
When the procedure of EEPROM chip and itself have fault
it will appear the code PE. At this time there is the need to
replace the EEPROM chip.