P/N
241417
Rev 4
Effective: 12-04-12
Replaces: 10-07-11
Page 2
ACCESSING THE CONTROL BOARD
1. Turn off the power to the heater.
2. Turn off the gas to the heater.
3. B-Series: Remove front door by removing
the 4 door panel screws shown in
Fig. 1
and
Fig. 2
.
4. A-Series: Remove front door by removing
the large door screw in front of unit as
shown in
Fig. 1
.
5. Remove the four screws on the side of con-
trol panel. See
Fig. 3
and
Fig. 4
.
6. Lay control panel forward toward you to ac-
cess the back of the temperature control
board.
REMOVE THESE
SCREWS FOR B - SERIES
LARGE
DOOR
SCREW
FOR A-SERIES
Close-up
REMOVE THESE SCREWS
Fig. 1
Fig. 2
Fig. 3
Fig. 4
