Troubleshooting - Honeywell pro Series Professional Install Manual

Screen is blank

Screen is difficult to

read

Heating or cooling

system does not

respond

Temperature

settings do not

change

"Cool On" or "Heat

On" is flashing

Aux heat runs in

cooling

Cool runs with a call

for heat

Heat runs with cooling • Verify there is not a wire attached to W for heat pump

Sensor will not

connect

• Check circuit breaker and reset if necessary.

• Make sure power switch at heating and cooling system is

on.

• Make sure furnace door is closed securely.

• Check setting in MENU/ Preferences / Inactive backlight

brightness or Inactive sleep backlight brightness

• Touch MENU to go to system mode. Set to heat. Make sure

the heat setpoint is above the room temperature.

• Touch MENU to go to system mode. Set to cool. Make sure

the cool setpoint is below the room temperature.

• Check circuit breaker and reset if necessary.

• Make sure power switch at heating & cooling system is on.

• Make sure furnace door is closed securely.

Make sure heating and cooling temperatures are set to

acceptable ranges:

• Heat: 40 °F to 90 °F (4.5 °C to 32.0 °C)

• Cool: 50 °F to 99 °F (10.0 °C to 37.0 °C)

• Compressor protection feature is engaged. Wait 5 minutes

for the system to restart safely, without damage to the

compressor.

• For heat pump systems, verify there is not a wire attached

to W on UWP systems. See "Heat pumps systems" on page

7.

• For heat pump systems, verify there is not a wire attached

to W on UWP systems. See "Heat pumps systems" on page

7.

systems. See "Wiring" on pages 6-7.

• Press and hold Connect on the wireless sensor for 15

seconds. The LED will turn Amber. Return to the thermostat

menu and press Menu > Devices and Sensors. Follow the

on-screen instructions to add the sensor.

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