See also:

Clearing the programmed information
Individual buttons cannot be cleared. However, to clear all programming, press and hold the two outside buttons and release when the indicator light begins to flash (approximately 20 seconds). ...

Engine block heater (if so equipped)
WARNING ● Do not use your engine block heater with an ungrounded electrical system or a 2-pronged adapter. You can be seriously injured by an electrical shock if you use an ungrounded conne ...

Manual operation
The manual mode can be used to control the heater and air conditioner to your desired settings. To turn off the heater and air conditioner, turn the fan control dial to the OFF position. Fan s ...