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Thermistor
The thermistor is located on the upper rear area
of the blower housing. It is below the outlet
thermostat. The thermistor measures outgoing air
temperature and responds to temperature changes.
The thermistor provides temperature change
information to the control board. The control board
makes heating decisions based on this information.
The thermistor has an approximate resistance value
of:
11.24 - 13.08K • Ω at 140°F
23.76 - 28.52K • Ω at 104°F
55.08 - 68.43K • Ω at 68°F
Operation of the thermistor can be checked by
using the service test mode. (See Service Test Mode.)
Specifi c failures associated with the thermistor can
initiate error codes tS and t0. (See Error Codes.)
To access the thermistor, it is necessary to remove
the drum. (See Drum and Bearing.) A wire harness
connects 2 light blue wires to the thermistor. The
thermistor is attached to the blower housing with a
Phillips-head screw.
Disconnect
Thermistor
Blower Wheel
The blower wheel is held to the blower motor shaft
with a 14-mm hex nut. To remove the blower wheel,
it is not necessary to remove the blower motor
from the blower housing. The blower wheel can be
removed by removing the blower wheel access ring
from the duct cover assembly. The blower wheel
access ring is attached to the duct cover assembly
with 1 Phillips-head screw and 2 tabs.
To remove the blower wheel:
Remove the drum. (See 1. Drum and Bearing.)
Remove the Phillips-head screw from the blower 2.
wheel access ring.
Slide the blower wheel access ring to the left 3.
and remove it from the 2 tabs on its right side.
Tab
Tab
Access Ring
(Continued Next Page)
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