11
S
ERVICE
Replacing the Thermocouple
To replace a defective thermocouple, perform the follow-
ing steps:
1.
Perform steps 1 through 3 in Replacing a
Heater.
2.
Gently remove the thermocouple from inside the
chamber by pulling it though the back wall of the
furnace.
3.
Gently lie the furnace on its side so as to
expose the bottom perforated screen.
4.
Remove the screen and locate the thermocou-
ple connection on the back of the control board.
5.
Using a small flat blake screwdriver, unscrew
the terminals holding the thermocouple wire to
the board.
6.
Remove the thermocouple from the unit.
7.
Install the replacement thermocouple by revers-
ing the above procedure.
Note
Verify the red thermocouple wire is
connected to the negative (-) control
board terminal and the orange is con-
nected to the positive (+) terminal.
