Troubleshooting; Self Check Function; Self Check Table - Mitsubishi Electric MS09EW Service & Parts Manual

Self check function
This function is to show defective point by lighting or flashing of the indoor unit power lamp, or "I
F E E L
monitor lamp (monitor
LED). If trouble written in the below table occurs during operation, the self check result is indicated. The abnormal cation
indication is reset by pressing the power on/off button of the remote controller and when the unit is on.
10
1I_;
*
Before taking measures make sure that the symptom reappears, for accurate troubleshooting.
TROUBLE SHOOTING
Self Check Table
; m :
Flash
0
OFF
Abnormal point
indication
Symptom
Detect m e t h d
Cause
Repair
lndoor coil thermistor
,
POWER
D
~ 1 . 1
I FEEL MONITOR
lndoor unit power turns off.
Detects lndoor coil thermistor short or open circuit every
2 sec. during operation.
Thermistor defect
Connector disconnecting
0
Connector misconnecting
lndoor control P.C. board defect
Check thermistor calibration.
0
Reconnect connector.
0
Check indoor board.