EF3801/4001 T-1/T-2 Sensor
Replacement Instruction
OVERVIEW
First production 2005 stoves Serial #3384 to #3420 require precautionary replacement of both T-1 and T-2 sensors. The
sensors located in the stove body sense the operating temperatures and overall parameters of the stove. The T-1 sensor
provides blocked flue and operating sensing while the T-2 sensor provides start up, shut down, and over temp. sensing.
The first 26 units have a sensor assembly attached in such a way that may cause the stove to act erratically. As a
precaution we are requiring replacement of the sensors and offering a repair credit. Please contact customer service @
775-241-2586 or http://www.sierraproductsinc.net/guides.php for further information.
T-1 and T-2 Sensor Replacement:
Removal from 3801 and 4001 Insert:
The T-1 and T-2 sensors maybe accessed by removing the inspection covers on
back of the unit. The T-1 sensor is installed into to the right side of the combustion housing just above the exhaust tube.
Unplug the harness connector to the sensor. Using a wrench, unscrew the brass fitting and sensor holder from the
exhaust pipe. The T-2 sensor is located right of the combustion housing attached on the lower portion of the manifold.
Unplug the harness connector the sensor. Remove the #10 nut attaching the sensor holder and remove the sensor.
Reverse process to install new sensor fitting and holder. Reinstall the rear panel and confirm standard operation.
63 Laxalt Dr. Carson City, NV 89706
775-241-2586 Fax 775-241-2704
www.sierraproductsinc.com
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