E38
Outdoor air temperature
sensor anomaly
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
010304020 50
NO
Temperature sensor resistance (kΩ)
Temperature (°C)
5kΩ at 25°C
(Broken wire)
(Short-circuit)
Correct connector.
Defective outdoor air
temperature sensor
➞
Replace.
Defective outdoor unit
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-minute 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 5 seconds
continuously within 20
seconds after power ON
4. Presumable cause
• Defective outdoor unit PCB
• Broken sensor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note:
Error code
Remote control:
LED Green Red
Content
Indoor
Stays OFF
Keeps flashing
'22 • PAC-SM-412
-
84
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