Mitsubishi SCM40ZS-S User Manual

-
264
-
'16 • SCM-T-199
E39
Discharge pipe
temperature sensor anomaly
Keeps ashing Stays OFF
Outdoor
–
8
-
time ash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is the
discharge pipe
temperature sensor
connector connected
properly?
YES
Are the
characteristics
of discharge pipe
temperature
sensor
OK?
NO
For the characteristics of discharge pipe
temperature sensor, see the following graph.
YES
140120100806040200
0
100
50
[T 90
°C]
NO
Temperature-resistance characteristics
Temperature sensor resistance (kΩ)
Temperature (°C)
(Broken wire)
(Short circuit)
Correct connector.
Defective discharge pipe
temperature sensor
→
Replace.
Defective outdoor main
PCB
→
Replace.
(Defective temperature
sensor input circuit)
2. Error detection method
Detection of anomalously low
temperature (resistance) on
the discharge pipe temperature
sensor
3 . Condition of error displayed
When the temperature sensor
detects -25 °C or lower for 5
seconds continuously within
10 minutes to 10 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.
4. Presumable cause
• Defective outdoor main PCB
• Broken sensor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note:
Error code
Remote control:
LED Green Red
Indoor
Content

Mitsubishi SCM40ZS-S Specifications

General

Brand	Mitsubishi
Model	SCM40ZS-S
Category	Air Conditioner
Language	English