-
120
-
'11 • SCM-SM-110
Error code
Remote controller:
LED
Green
Red
Indoor
Content
E38
Outdoor air temperature
sensor anomaly
Keeps flashing
Stays OFF
Outdoor
–
8
times flash
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
Is
the suction pipe
temperature sensor connector
connected properly?
YES
Is the
characteristics of the
suction pipe temperature
sensor
OK?
NO
For the characteristics of suction pipe
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 main
(control) 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 main
(control) PCB
• Broken sensor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note:
