CONNECT SERIES SERVICE MANUAL
10
ENGLISH
Troubleshooting
UUC136WC* / UUC148WC*
Closed
Closed
Open
Open
Condenser temperature sensor abnormal
Discharge temperature sensor abnormal
Start
Start
Check the connection between
sensor and PCB
Check the connection between
sensor and PCB
Check if the sensor is open or closed?
Check if the sensor is open or closed?
Replace the sensor
Replace the sensor
Replace PCB
Replace PCB
T3 Condenser Temperature Sensor
T5 Discharge Temperature Sensor
CN16 is the T3 outdoor unit heat exchanger sensor
connection. For the 36/48K models, this is connected
to a fixed resistor - the resistor is 5KΩ.
CN9 is the T5 compressor discharge temperature sensor
connection. The resistance of T5 at 77°F is 50KΩ.
Temp (F°/C°) KΩ
77/25 50
95/35 33
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