Outdoor Liquid Pipe Thermistor (R7T) Abnormality - Daikin RMXS-L Series Service Manual

SiUS181631EA

7.13 Outdoor Liquid Pipe Thermistor (R7T) Abnormality

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