Mitsubishi Heavy Industries FDC224KXZPE1 User Manual

–
83
–
'14 • KX-SM-221
Error code
Remote control:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
E7
–
Indoor return air
temperature thermistor anomaly (ThI-A)
Keeps ashing 1-time ash
Keeps ashing Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is
the connector of
thermistor connected
properly ?
Regarding the characteristics of
the thermistor, see the following chart.
Temperature-resistance characteristics of indoor
return air temperature thermistor (ThI-A)
Are
the characteristics
of thermistor OK?
*1
NO
NO
YES
YES
*1 Check several times to prove any poor connection
15
10
5
0 10 30 40 20 50
Temperature sensor resistance (kΩ)
Tem
p
erature (°C)
5kΩ at 25°C
Insert the connector
securely.
Replace thermistor
(ThI-A).
Replace indoor control
PCB.
2. Error detection method
Detection of anomalously low
temperature (resistance) of
ThI-A.
3 . Condition of error displayed
• If -50°C or lower is
detected for 5 seconds
continuously, compressor
stops. After 3-minutes delay
the compressor is restarted
automatically, but if this
anomaly occurs again within
60 minutes after the initial
detection.
• Or if 48°C or higher is
detected for 5 seconds
continuously.
4. Presumable cause
• Anomalous connection of
indoor return air temperature
thermistor
• Indoor return air temperature
thermistor anomaly
• Indoor control PCB anomaly
Note:

Mitsubishi Heavy Industries FDC224KXZPE1 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDC224KXZPE1
Category	Air Conditioner
Language	English