Disconnect input power from the air conditioner before performing maintenance on any part of the
electrical system. The voltages used can be lethal.
(1) Disconnect power at power source.
(3) See figure 4-22 and remove four screws and pull the cover off.
Figure 4-22. Mode Selector Switch
Loosen the set screws in the temperature selector and the control module mounting screw knobs.
Remove these two knobs.
Remove the three screws from the posts and slip the back portion off.
Tag and disconnect the wires from the mode selector switch.
Loosen the set screw and pull the knob from the mode selector switch.
Remove the nut and washer and pull the mode selector switch from the panel.
b. Test. See the mode position chart below and check continuity at pins indicated to each of the positions
indicated. Replace the switch if continuities are not in accordance with those indicated.