Mitsubishi Alarm Code #903

Alarm Code #903

Model CPE52, 53, 14, 15, 15V, 16

Failure Pull Down time is too long

Countermeasure

<< Cause >>

(1) Neglected closing of container door and ventilator

(2) Remaining frost on Evaporator coil

(3) Compressor stop due to protector actuation and defective protector, etc.

(4) Evaporator fan stop

(5) Leakage of refrigerant

(6) EEV cooling capacity control failure due to LPT shift failure, TDK shift failure

and EEV operation failure

(7) EEV input limit control failure due to LPT high shift failure, CT1 or CTM high shift failure

(8) EEV high refrigerant pressure control failure due to HPT high shift failure

(9) Defective PCB-C board

< Check >

Refer to the detail of the related failure codes and check the operation state displayed

on the personal computer or the LCD.