Sunheat Thermal Wave F15, Repair Manual, Page: 14 / 22

H
How To Replace Circuit Board
!! Unplug The Heater Before Servicing!!
(Remember That The Edges Of the Metal Are Sharp. Use Caution)
Remove the Circuit Board by removing all 4 screws that hold it in place. These screws are
located on each corner of the board.
NOTE: Keep wires attached to old board
Put the new board in place. Disconnect 1 wire at a time from old board and connect it to the
appropriate location on the new board.
**If you disconnect all wires at once, please refer to wiring diagram (O) for wire
location.
MAKE SURE THE TEMPERATURE SENSOR AND DISPLAY SCREEN ARE
PLUGGED BACK INTO THE CIRCUIT BOARD.
Temperature Sensor Plug
Display Plug
Screw Location
Screw Location