Hacking the Ecobee3 for Wiring Success
Andrew McGrath


thank you for your post. I had exactly the same issue today while installing Ecobee3. One problem I’m experiencing however is that fan does not turn on when heating pump in spinning. If I manually turn on the fan it is working fine and warm air comes out, for a while and then just room temperature/coolish air comes out.

My configuration is:

Heat Pump Type: Air to Air

O/B Reversing Valve: O/B Energized on Heat

Aux Heat Simultaneous Operation: Enabled

Furnace: Fan Control in Heat Mode: HVAC

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