Mitsubishi Electric SRK100VNPZJX, Technical Manual

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'12 • PAC-T-174
E55
1. Applicable model
5. Troubleshooting
Models FDC200, 250 Diagnosis Countermeasure
NO
YES
NO
YES
Is the
connection of
underneath temperature
thermistor connector
OK?
Are the
characteristics of
underneath temperature
thermistor OK?
Temperature-resistance characteristics
Temperature thermistor resistance (k
Ω
)
Temperature (°C)
15
10
5
0 10 30 40 20 50
5k
Ω
at 25°C
(Broken wire)
(Short circuit)
Correct connection of
underneath temperature
thermistor connector.
Defective underneath
temperature thermistor
➞
Replace.
Replace outdoor control
PCB.
(Defective underneath
temperature thermistor
input circuit)
2. Error detection method
When anoumalous low
temperature (resistance) is
detected by the underneath
temperature thermistor
3. Condition of Error displayed
If the temperature thermistor
detcts -50°C or lower for 5
seconds continuously within
10 minutes to 10 minutes 20
seconds after compressor ON,
the compressor stops. When
the compressor is restarted
automatically after 3-minutes
delay, if this anomaly ocuurs 3
times within 40 minute.
4. Presumable cause
• Defective underneath
temperature thermistor
connection
• Defective underneath
temperature thermistor
• Defective outdoor control
PCB
Note:
Error code
Remote controller:
LED Green Red
Outdoor control PCB
Outdoor inverter
PCB
1 time flash Keeps flashing
Keeps flashing
Indoor control PCB Stays OFF Keeps flashing
Content
Keeps flashing
Red LED Green LED
Underneath
temperature thermistor anomaly
(Models FDC200, 250 only)