Mitsubishi Heavy Industries FDTC40ZHXV Technical Manual page 325

E39
Note (1) ( ) is for model 40~60.
1. Applicable model
All models
2. Error detection method
Detection of anomalously low
temperature (resistance) on
the discharge pipe temperature
thermistor
3. Condition of Error displayed
When the temperature thermistor
detects -10°C or lower for 5
seconds continuously within
10 minutes to 10 minutes 20
seconds after the compressor
ON, the compressor stops. After
3-minutes delay, the compressor
starts again automatically, but
if this anomalous temperature
is detected 3 times within 40
minutes.
4. Presumable cause
• Defective outdoor control
PCB
• Broken thermistor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note:
Keeps flashing Stays Off
Keeps flashing 1(8) time flash
5. Troubleshooting
Diagnosis
304
–
Discharge pipe
temperature thermistor anomaly
–
Countermeasure
Correct connector.
Defective discharge pipe
temperature thermistor
Replace.
Defective outdoor control
PCB Replace.
(Defective temperature
thermistor input circuit)