Mitsubishi Electric SRK100VNPZJX, Техническое руководство

Страница: 439 / 509

-
438
-
Error code
Remote controller:
Content
1 time flash Keeps flashing
Keeps flashing
4 times flash Keeps flashing
Indoor display
RUN light TIMER light
Green LED
Yellow LED
Red LED
Outdoor
control PCB
Outdoor
inverter PCB
Discharge pipe
temperature thermistor anomaly
-
438
-
'12 • PAC-T-174
E39
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is the
discharge pipe
temperature thermistor
connector connected
properly?
YES
Are the
characteristics
of discharge pipe
temperature
thermistor
OK?
NO
For the characteristics of discharge pipe
temperature thermistor, see the following graph.
YES
温度センサ抵抗
〔 T�80� 〕
温度センサ抵抗
〔
T�80�
〕
温 度〔Ｔ〕 （ � ）
T�80�
T�80�
100
50
0
10
5
0
0 50 80 100
(k)
(k)
0
20
40
60
80
100
120
140
160
180
200
0 20 40 60 80 100 120 140 160
NO
Temperature-resistance characteristics
Temperature thermistor resistance (k
7
)
Temperature (°C)
(Broken wire)
(Short circuit)
Correct connector.
Defective discharge pipe
temperature thermistor
➞
Replace.
Defective outdoor control
PCB
➞
Replace.
(Defective temperature
thermistor input circuit)
2. Error detection method
Detection of anomalously low
temperature (resistance) on
the discharge pipe temperature
thermistor
3. Condition of Error displayed
When the temperature thermistor
detects -10°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 control
PCB
• Broken thermistor harness or
temperature sensing section
(Check molding.)
• Disconnected wire connection
(connector)
Note: