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123
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'14 • SR-T-157
E7
Return air temperature
thermistor anomaly
Keeps flashing
1-
time flash
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
Te
mperature 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 control:
LED
Green
Red
Indoor
Content
Содержание SRR25ZJ-S
Страница 30: ... 29 14 SR T 157 2 4way ceiling cassette type FDTC Models FDTC25VF 35VF 35 ...
Страница 34: ... 33 14 SR T 157 See page 29 a PJA012D783 ...
Страница 86: ... 85 14 SR T 157 09 SRK DB 087D Service data record form 78 ...
Страница 164: ... 163 14 SR T 157 5 Super link E board SC ADNA E F SL2NA E and SL3N AE BE to control 5 Super link E board SC ADNA E ...
Страница 165: ... 164 14 SR T 157 ...