Carrier ComfortLink 6 Series Controls, Start-Up, Operation, Service, And Troubleshooting page 60

To Service Compressor Motor Thermistors — Two ther-
mistors are factory installed in each compressor. Connections
for the thermistors are located in the compressor junction box.
There are 3 terminals for the thermistors: S1, S2, and C. Motor
temperature is measured by leads connected to one of the S ter-
minals and the C terminal. If a compressor motor thermistor
failure occurs, verify that there is a true short or open circuit at
THERMISTOR JACKETED CABLE
DRIER CORE
STRAINER
SCREENS
Fig. 33 — Filter Drier
SENSOR TUBE BEND SLIGHTLY BEFORE WELL INSERTION
4 in.
Fig. 34 — Thermistor Replacement (T1 through T6)
these terminals. If one of the thermistors fails, disconnect and
relocate the wire on one of the S terminals to the other S termi-
nal (S1 to S2 or S2 to S1). The thermistors are not serviceable in
the field. If both of the compressor motor thermistors fail,
compressor replacement is required. See Table 40 for motor
thermistor temperature and resistance values.
3/16 in.
60
THERMISTOR WELL