Mitsubishi Electric MJ-E14EG-S1-IT Service Manual page 16

3) Error Indications and Corrective Actions
Indicator
(current humidity
display)
A1
A2
A6
A8
E0
E1
E2
E3
E4
E5
E7
E8
P4
4) Self Diagnostic Test Program
(1) Deactivate 3-minute restart prevention
Start . . . . . . . . . .Press the MOVE EYE and DEHUMIDIFY switches together 3 times when

Functions . . . . . . .

Finish . . . . . . . . .Turn the power OFF.

16
Error (failure)
Microprocessor failure
RAM error
Frequency determination error
Watchdog error
(Main stop/Interrupt)
2
E PROM failure
Room temperature sensor
disconnected
Room temperature sensor short
Move eye thermopile
OBJ High temperature abnormal
(object temperature)
Move eye thermopile
OBJ Low temperature abnormal
(object temperature)
Move eye thermopile
AMB High temperature
abnormal (ambient temperature)
Move eye thermopile
AMB Low temperature abnormal
(ambient temperature)
Tube temperature thermistor
disconnected
Tube temperature thermistor
short
Compressor failure
the power is off. Press the POWER switch within 2 seconds.
Deactivates 3-minute restart (immediate operation)
Sets the operating mode to LAUNDRY
When E
are lit.
Turns the solenoid valve ON for 3 seconds when the power is off, and
then after 3 seconds, turns the solenoid valve OFF.
When the operating mode changes, it fi xes the fan rank and unlocks the
E PROM error display.
2
Corrective action
Replace the control board
Check the outlet, 220V power
(Try to replace the power supply and control
boards)
Replace the control board
Replace the control board
Check the P13 connector connection
Check the room temperature sensor board
Check the connectors
Replace the move eye thermopile
Check the connectors and the disconnection
Replace the move eye thermopile
Check the connectors
Replace the move eye thermopile
Check the connectors and the disconnection
Replace the move eye thermopile
Check the connectors
Check the P15 tube temperature thermistor
connection
Check the air fl ow
Check the tube temperature thermistor
Check the compressor operating noise
PROM error is detected, FULL LED and CHILD LOCK monitor
2