5 . 5 . Assembly
Assemble the control panel in accordance with the following instructions.
a. Install the wiring harness receptacle in the wall of the control panel housing, and secure with four screws and
b. Connect leads to the grounding stud and to the two-speed fan switch. Install the switch through the hole in the
front of the control panel. Secure with a lockwasher and panel mounting nut.
c. C onnect wire leads to the mode selector switch, and install the switch through the hole in the front of the
control panel. Secure it, with a lockwasher and panel mounting nut.
d. Attach the temperature control thermostat to the rear cover of the control panel assembly, using four screws
and self-locking nuts. Connect wire leads to the thermostat. Split and install grommet on capillary tube and install tube
and grommet in notch in rear cover.
e. Carefully install rear cover in control panel housing. Secure with four screws and self-locking nuts.
Install the control panel assembly in the air conditioner as directed in the following steps:
a. If the control panel is not to be remotely mounted. lead the thermostat sensor bulb and capillary tube through
the hole in the right-hand corner of the evaporator air intake chamber. Mount the bulb on the wall, using a loop clamp and
screw. Split a rubber grommet radially from the center outward, and install around the capillary tube in the hole. Seal with
b. Position the control panel on the junction box, and secure with four screws through the corners of the
Connect plug, P7, to the wiring harness receptacle.
d. Position the lower panel on the air conditioner, and secure with the two panel fastener screws.
e. Install the air filter in retaining channel and spring clip in the air intake chamber, and position the air intake
grille on the air conditioner. Secure with the six cam-lock studs in the frame.
Section II. JUNCTION BOX
The junction box is located just inside the lower panel. It provides housing or mounting facilities for the electrical
components that control the automatic switching of power and control circuits to the various operating components of the
air conditioner. These components include the control transformer. rectifier, armature relays, the time delay relay, the
circuit breaker, and associated fuses and terminal blocks.
Disconnect power from the air conditioner before performing maintenance on the electrical system.
The voltage used can be lethal.
a. Unscrew two panel fastener screws in the top edge of the low panel, and remove the panel.
b. Disconnect plug P7 from the left end of the control panel assembly, then remove four screws from the corners
of the control panel mounting flange. Support the control panel out of the way. being careful to avoid kinking the
thermostat sensor capillary tube.