Thermostat Installation Guide

This article is to help pair the thermostat to your unit.

Our PTAC (Packaged Terminal Air Conditioner) units have the ability to pair a wired or wireless thermostat for remote control. This can be used to control the temperature of a room or space. Most commonly, used in hotels, and residential units to provide individual climate control. Installing a PTAC thermostat can be a particular job, but with the right tools and knowledge, it doesn't have to be.

Once you have all of your materials gathered, you can begin the installation process. Start by turning off the power to the PTAC unit and remove the power plug.

Wired Thermostat

The wall connection will have all four or five wires available to connect to the back of your thermostat. Important the wires connecting to the unit should match the terminal on the back of the thermostat. Sometimes taking a photo of your unit's wiring will help with connecting your wire.

Wireless Thermostat

The thermostat only requires two wires to be connected to the thermostat, R and C. Since the receiver is wired to the unit, the wireless thermostat only requires two wires to operate. Again, C can be replaced with batteries if a second wire is not available at the thermostat.

Change Mode to Thermostat (Excluding GC42E-H----)

Plug in the outlet & check the green light is on. If not, check your breakers and switch them OFF and then ON to provide power to the plug.
Once the green light is lit on the plug, without turning on the unit, hold HEAT/MODE and + for 3 seconds.
The LED display will read "R" and let go of the controls. You will notice the display will not power on or change settings on the display. This means the unit is only being controlled by the thermostat and the display is not available.

NOTE: If you would like to change the unit to operate with the display, press and hold HEAT/MODE and + for 3 seconds. The LED display will read "P". This means the control panel/display is in control and the unit can be operated.