SSC3088AS
17
"Message 01" (oven thermistor fault), "Message 05 and Message 12" (engine thermistor fault"
The connector of the thermistor (
board
part and thermistor part)
is not disconnected or short circuited
NO
YES
Pull out the thermistor connector from the board, measure the resistance value of the thermistor
with a tester or measure the resistance value between both two terminals with a relay connector
Connect or repair
the connector
The resistance value of the thermistor is within normal range at about
231kΩ at 25℃/about 13kΩ at 100℃/about 1kΩ at 200℃
NO
YES
Replace the thermistor or the harness
Replacement of the relay board or replacement of the display board*
*Be sure to refer to P3, "Before replacement of board", before replacing the board.
Note:
When the display board is replaced, be sure to perform the citric acid cleaning operation.
NOTE:
Message 08 (Damper Motor)
I
Inspection method when liquid crystal is not displayed.
NO NO NO
YES
YES
YES
There is 120V at CN-E and RY1
of the relay board
There is 120V at each
E thermo terminal
Reconnect the loosen connector
or repair its wiring
The 20A fuse of the noise
filter is not blown out
NO
NO
There is 24V at CN-B of the relay board
Replace the power
supply board *
Replace the noise filter *
YES
The connector and the wiring of the
relay board has been corrected
NO
Displayed when the LCD unit is connected correctly
Reconnect the loosen
connector or repair its wiring
NO
YES
YES
The LCD unit and the display
board are connected correctly
Replacement of relay board
Reconnect the loosen FPC
Replacement of LC unit
Replace the
engine unit
YES
NO
Displayed when the display board
is connected correctly
Replacement of display board
YES