Mitsubishi FDT125VNPWVH - Page 72

Error code
Remote control:
LED Green Red
Indoor
Content
E6
Indoor heat exchanger
temperature sensor anomaly
Keeps ashing 1-time ash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
NO
NO
YES
Is the
connection of indoor heat
exchanger temperature sensor
connector OK?
Are
characteristics of indoor
heat exchanger temperature
sensor
OK?
YES
Temperature-resistance characteristic
Temperature sensor resistance (kΩ)
Temperature (°C)
15
10
5
010304020 50
(Broken wire)
(Short-circuit)
5kΩ at 25
°C
Correct it.
➞
Insert connector
securely.
Defective indoor heat
exchanger temperature
sensor
➞
Replace.
Defective indoor unit
control PCB
➞
Replace.
(Defective indoor heat
exchanger temperature
sensor input circuit)
2. Error detection method
Anomalously low temperature
or high temperature (resistance)
is detected on the indoor heat
exchanger temperature sensor
(Thi-R1, R2 or R3).
3 . Condition of error displayed
• When the temperature sensor
detects -50°C or lower for
5 seconds continuously,
the compressor stops.
After 3-minute delay, the
compressor starts again
automatically, but if this
error occurs again within
60 minutes after the initial
detection.
• Or if short-circuit is detected
for 5 seconds continuously
4. Presumable cause
• Defective indoor heat
exchanger temperature sensor
connector
• Indoor heat exchanger
temperature sensor anomaly
• Faulty indoor unit control
PCB
Note:
'22 • PAC-SM-412
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71
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