Mitsubishi MJ-EZ6CX-S1-IT Service Manual page 24

Display
A1 A2
Error code
Frequency
Content
RAM error
determination error
( When it is reset. )
Microcomputer Microcomputer
( IC1 ) failure ( IC1 ) failure
Cause
→ Replace power →Replace power
/
control board control board
Remedy
Part name
Conditions
Connector
Check
terminals
Normal
value
A3 A6
Failure of photo
Frequency
interrupter
Watch dog
determination error
for dryer fan
error
( During operation )
(open)
Microcomputer Microcomputer Damage to
( IC1 ) failure ( IC1 ) failure
photo interrupter
→Replace power →Replace power
control board control board
A9 E2 E3
Short circuit
Disconnection
of room temp.
of room temp.
thermistor
thermistor
( 1 ) Disconnection of ( 1 ) Failure in soldering
temp./humidity of sensor board
sensor lead wire
( 2 ) Short circuit of
( 2 ) Failure in soldering
connector pins ( P9)
of sensor board
( 3 ) Connector contact
failure
Room temp. / humidity sensor
Remove P9
P10
Between pin3 and pin4
47k- 51k Ω
E4 E5
Disconnection Short circuit Disconnection
of heater of heater of frame
thermistor thermistor thermistor
( 1 ) Contact failure
( 1 ) Contact failure of ( 1 ) Contact failure
of operation control
operation control of operation control
board
board connector board
( 2 ) Disconnection
( 2 ) Short circuit of
( 2 ) Part failure
of lead wire
lead wire
( 3 ) Part failure
( 3 ) Part failure
Frame･heater thermistor
Remove P11 and P13
Between terminals
180 k - 500k Ω
E6