
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66
Troubleshooting
Heat pump
issues cool air
in heat mode,
or warm air in
cool mode
• Check
Function 0190: Heat Pump Changeover Valve to make sure it is
properly configured for your system (see page 55).
Button on
lower right of
screen is blank
• This button will remain blank unless the furnace filter change reminder is
activated (see page 43).
Red light is on
• If thermostat is in Emergency Heat mode the red light is normal. It shows
that the thermostat is in emergency heat mode.
• If thermostat is not in Emergency Heat mode, contact a qualified service
contractor for repair.