See also:

Automatic operation
Cooling and/or dehumidified heating (AUTO) This mode may be used all year round as the system automatically works to keep a constant temperature. Air flow distribution and fan speed are also cont ...

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 serial number
The number is stamped on the engine as shown. ...