'12 • PAC-T-174
E7
Return air temperature
thermistor anomaly
Keeps flashing 1 time flash
Keeps flashing
Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
NO
NO
YES
Is the
connection of return
air temperature thermistor
connector OK?
Are the
characteristics of return air
temperature thermistor
OK?
YES
15
10
5
0
10
30
40
20
50
Temperature-resistance characteristic
T
emperature thermistor resistance (k
Ω
)
Temperature (°C)
5k
Ω
at 25
°C
(Broken wire)
(Short circuit)
Correct.
➞
Connect
connector.
Defective return air
temperature thermistor
➞
Replace.
Defective indoor control
PCB
➞
Replace.
(Defective return air
temperature thermistor
input circuit)
2. Error detection method
Anomalously low temperature
or high temperature (resistance)
is detected by indoor return air
temperature thermistor (ThI-A)
3. Condition of Error displayed
• When the temperature thermistor
detects -20°C or lower for
5 seconds continuously, the
compressor stops. After 3-minute
delay, the compressor starts again
automatically, but if this error
occurs again within 60 minutes
after the initial detection.
4. Presumable cause
• Defective return air
temperature thermistor
connector
• Defective return air
temperature thermistor
• Faulty indoor control PCB
Note:
Error code
Remote controller:
LED
Green
Red
Indoor
Outdoor
Content
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377
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Summary of Contents for SRK100VNPZJX
Page 95: ... 94 12 PAC T 174 Models FDT100VF 125VF 140VF G H H H H A B F C D H G PJF000Z285 ...
Page 98: ... 97 12 PAC T 174 Models FDEN60VF 71VF C2 C1 A B F E G D B A C1 C2 C1 C2 PFA003Z817 B ...
Page 101: ... 100 12 PAC T 174 Models FDU200VF 250VF F F G B A C D E PJD001Z216 B ...
Page 113: ... 112 12 PAC T 174 b Wireless remote controller RCN E1R 60 17 150 Unit mm ...
Page 275: ... 274 12 PAC T 174 ...
Page 276: ... 275 12 PAC T 174 ...
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Page 286: ... 285 12 PAC T 174 ...
Page 287: ... 286 12 PAC T 174 ...
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Page 341: ... 340 12 PAC T 174 4GRNCEG VJG 2 Part number Power PCB Part number ...
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