SiUS181631EA Troubleshooting for Outdoor Unit
Troubleshooting 241
7.13 Outdoor Liquid Pipe Thermistor (R7T) Abnormality
Error Code
J7
Method of Error
Detection
The temperature detected by the outdoor liquid pipe thermistor determines the error.
Error Decision
Conditions
When a short circuit or an open circuit in the outdoor liquid pipe thermistor is detected
Supposed
Causes
îš„
Disconnection of thermistor
îš„
Defective outdoor liquid pipe thermistor (R7T)
îš„
Defective main PCB (A1P)
Troubleshooting
Refer to Thermistor Resistance/Temperature Characteristics table 1 on page 267.
Is the
thermistor ASSY
connected to X13A on the
main PCB (A1P)?
Is the resistance
normal when measured
after disconnecting the
thermistor (R7T)?
(3.5 kΩ ~ 360 kΩ)
Replace the main PCB
(A1P).
(R13029)
Connect the thermistor and
turn on again.
NO
Replace the outdoor liquid
pipe thermistor (R7T).
NO
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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