Mitsubishi Electric MJ-E14CG-S1-IT Service Manual page 16

3) Error Indications and Corrective Actions
Indication
(Timer display)
E0
E1
E7
E8
A1
A2
A3
A6
P4
4) Self-Test Program and Execution Procedure
(1) Deactivating 3-minute restart prevent lock
Start: Press the MODE and HUMIDITY SELECTION buttons together 3 times when the power
①
is off. Press the POWER button within 2 seconds.
Functions:
②
Deactivates 3-minute restart prevention lock (immediate operation)
①
② Fan: Fix at rank 6 (max. airflow)
Activates compressor
③
Operating mode: Low Temp
④
Low temperature is indicated on LCD.
⑤
When E
⑥
③ To end: Turn power off. The solenoid valve functions for 3 seconds.
16
Error (failure)
P10 connector out of position
Room temperature thermistor blowout
Room temperature thermistor short
Room temperature and humidity
sensor board failure
P11 connector out of position
Tube temperature thermistor blowout
Tube temperature thermistor short
Tube temperature sensor failure
Microprocessor failure
RAM error
Frequency determination error
(When power is on)
Frequency determination error
(During operation)
Watchdog timer error
Compressor
2 PROM error is detected, FULL, DRYING INSIDE and AIR PURIFIER LEDs are lit.
Corrective action
Check the P10 connection.
Check the room temperature and humidity sensor
board.
Check the P11 connection.
Check the tube temperature thermistor.
Replace the main board.
Outlet/power check
(Replace the main and power supply boards.)
Replace the main board.
Follow the "Does it dehumidify?" in the "Failure
diagnosis flowchart" of P11.