Installed a Honeywell RTH6300B thermostat app 4 months ago. Have a Lennox G20 series Gas furnace. All was working well till last week, smelt funny smell (smelt electrical) and since then the auto fan setting on thermostat will not start fan. Furnace starts but stops without the fan running. Switch to manual fan and evrything works well.
After studying the Lennox manual, could it possibly be the BCC (blower control board that has burnt out) Just a stab in the dark. Appreciate any help I can get
Phill
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