Mitsubishi SCM45ZJ-S

-
119
-
'11 • SCM-SM-110
Error code
Remote controller:
LED Green Red
Indoor
Content
E37
Outdoor heat exchanger
temperature sensor anomaly
Keeps ashing Stays OFF
Outdoor
– 8 times ash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is the
outdoor heat
exchanger temperature
sensor connector
connected
properly?
YES
Are the
characteristics of
outdoor heat exchanger
temperature
sensor
OK?
NO
For the characteristics of outdoor heat exchanger
temperature sensor, see the following graph.
YES
Temperature-resistance characteristics
Temperature sensor resistance (kΩ)
Temperature (°C)
15
10
5
0 10 30 4020 50
5kΩ at 25°C
NO
(Broken wire)
(Shot circuit)
Correct connector.
Defective outdoor heat
exchanger temperature
sensor
➞
Replace.
Defective outdoor main
(control) PCB
➞
Replace.
(Defective outdoor heat
exchanger temperature
sensor input circuit)
2. Error detection method
Detection of anomalously low
temperature (resistance) on
the outdoor heat exchanger
temperature sensor
3. Condition of Error displayed
• When the temperature sensor
detects -55 °C or lower for 20
seconds continuously within
2 minutes to 2 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.
• When -55 °C or lower is
detected for within 20 second
after power ON.
4. Presumable cause
• Defective outdoor main
(control) PCB
• Broken sensor harness or
temperature sensing section
• Disconnected wire connection
(connector)
Note: