Mitsubishi Heavy Industries SRK60ZJX-S, Technical Manual

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'10 • SR-T-091
E38
Outdoor air temperature
sensor anomaly
Keeps flashing Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is
the outdoor air
temperature sensor connector
connected properly?
YES
Is the
characteristics of the
outdoor air temperature
sensor
OK?
NO
For the characteristics of outdoor air
temperature sensor, see the following graph.
YES
Temperature-resistance characteristics
15
10
5
0 10 30 40 20 50
NO
Temperature sensor resistance (k
Ω
)
Temperature (°C)
5k Ω at 25°C
(Broken wire)
(Shot circuit)
Correct connector.
Defective outdoor air
temperature sensor
➞
Replace.
Defective outdoor
PCB
➞
Replace.
(Defective outdoor air
temperature sensor input
circuit)
2. Error detection method
Detection of anomalously low
temperature (resistance) on
outdoor air temperature sensor
3. Condition of Error displayed
• When the temperature sensor
detects -55 °C or lower for 5
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 PCB
• Broken sensor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note:
Error code
Remote controller:
LED Green Red
Indoor
Content