Reading and Clearing Diagnostic Trouble Codes

The control panel LEDs will indicate certain malfunctions by flashing. If the temperature door actuator fails to move to the proper position for a given setting, the temperature selection LED will flash after 20-30 seconds of operation.

The control box will attempt to position mode and temperature doors for a given setting, but will stop current flow to doors which fail to function correctly in 20-30 seconds to avoid damage to components.

If a non-functioning door is in the proper position for the setting, no LED indication will occur until the setting is changed, at which point, the LEDs will flash.