Friedrich R-410A Replacing The Indoor Coil Thermistor, Replacing The Control Board, Up Swing Out

REPLACING THE INDOOR COIL THERMISTOR

WARNING

ELECTRIC SHOCK HAZARD

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

Remove the decorative front cover (see page 30). Remove all indicated screws below (8 total, see figure below). Remove the Discharge Sensor and the User Interface plugs from the control board.

Remove the screws indicated at the side and back plate (6 total, see figure below). Partially lift the top cover and at the same time carefully swing out from the top, the back and side plate.

Up

Swing

Out

Replace the indoor coil sensor. Ensure to properly clip and insulate it at the same location (see figure below).

REPLACING THE CONTROL BOARD

WARNING

ELECTRIC SHOCK HAZARD

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

Remove the decorative front cover (see page 30). Disconnect discharge sensor plug (red) Disconnect the User Interface plug (white) Remove the 3 screws indicated below.

Pull control board and mount plate out and disconnect the following connectors from it:

Power, capacitor, thermistors, fan, reversing valve and heater.

Remove the hex screw holding the control board to its mount plate. Pull out the control board (see figure below).

31