Mitsubishi Heavy Industries SRK20ZJ-S Service Manual

-
103
-
'10 • SCM-SM-094
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 4020 50
NO
Temperature sensor resistance (k)
Temperature (°C)
5k at 25°C
(Broken wire)
(Shot circuit)
Correct connector.
Defective outdoor air
temperature sensor
ª
Replace.
Defective outdoor main
PCB
ª
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 PCB
• Broken sensor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note:

Mitsubishi Heavy Industries SRK20ZJ-S Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRK20ZJ-S
Category	Air Conditioner
Language	English