Before attempting any repairs or testing, check out the electrical safety pages.

The PC Board controls and activates all of the heat sources ( AC, DC, and gas) of the refrigerator. It requires 12 volt power at all times for the refrigerator to work on any heat source. It provides voltage to the Ignition Control Module when gas is selected, and sends voltage directly to the 12 volt element and 120 volt element, when those heat sources are selected. The board shown below is for a 3 way model of the 8700 series. The 2 way version would not use terminals J3 and J6.

The PC board on the 8700 series is an all in one board, incorporating the functions of the eyebrow board and Power Supply Board used on other models into the one board. This eliminates a lot of connection problems. The setup was pretty nifty, but short lived, probably because the controls were at the bottom of the refrigerator.

J1Interior light (+)
J2Interior light (-)
J3DC heat element (-)
J412 volt (-) to battery
J512 volt (+) to battery
J6DC heat element (+)
J7AC heat element
J8AC heat element
J9AC in
J10AC in
J11Ignition Module
112 VDC supplied through 3 amp fuse
2Check Light - 12 VDC has been given to ignition module, but ignition has failed
312 VDC is being supplied through the selector switch to the ignition module
4DC voltage is being applied to 12 volt heat element through J3 and J6
5AC voltage is being applied to AC heat element through J7 and J8
6DO NOT USE, originally designed to see if thermistor (temperature sensor) was functional

Troubleshooting the PC Board is a matter of testing what should come in and go out of the board. See the table above for information on that. Also, the fuses on the board should be tested. Please note that the fuse for the 12 volt heat element is not on the board, but is an inline fuse between the board and the heat element. This board also has a few L.E.D. indicators on it that can help in troubleshooting. They are shown in the table to the right.