Mitsubishi Electric SRK100VNPZJX, Technical Manual

Page: 396 / 509

- 395 -
'12 • PAC-T-174
Error code
Remote controller:
LED Green Red
Outdoor control PCB
Outdoor inverter
PCB
1 time flash Keeps flashing
Red LED Green LED
Indoor control PCB Stays OFF Keeps flashing
Keeps flashing
Content
2 times flash
E41
1. Applicable model
5. Troubleshooting
Models FDC200, 250 Diagnosis Countermeasure
YES
YES
YES
NO
YES
YES
Replace inverter PCB
Can error be reset? YES
Correct it.
Replace the outdoor fan motor or the
outdoor control PCB.
Replace the power transistor
temperature thermistor.
* Characteristics of power transistor temperature thermistor
Is it possible to
reset the error for 10 minuted after
compressor stopped?
Is the
installation space of outdoor
unit enough?
Is the outdoor fan running?
NO
NO
Are the
characteristics of power transistor temperature
thermistor OK?
Connect it
securely.
Is the connection
of power transistor temperature thermistor
connector OK?
Is the fixing
of power transistor to radiator fin OK?
Does the error recur?
YES
NO
0
20
40
60
80
100
120
140
160
180
200
0 20 40 60 80 100 120 140
Temperature (°C)
T
emperature thermistor resistance (k
Ω
)
NO
Temperature-resistance characteristics
NO
NO
NO
NO
・
Fixed screw
・
Application of radiating
silicone
YES
OK
Replace power transistor.
Fix properly.
OK
2. Error detection method
When anomalously high
temperature is detected by
power transistor temperature
thermistor (Tho-P1)
3. Condition of Error displayed
Anomalously high temperature
of power transistor is detected 5
times within 60 minutes.
4. Presumable cause
• Inverter PCB anomaly
• Outdoor fan motor anomaly
• Improperly fixing of power
transistor to radiator fin
• Power transistor temperature
thermistor anomaly
• Inadequate installation space
of outdoor unit
Note:
Power transistor overheat(2/2)
(Models FDC200, 250 only)