I have a Carrier F4VC unit and the other day we wanted to turn on just the fan blower to move air around. At the thermostat I changed the fan mode from auto to on and nothing happened. I adjusted the desired temp a bit, and everything kicked on. I check the wires, I have 24v from R to C. I jumped R to G and verified there was 24v and still no fan turning on.
Any suggestions on what to look for next?
Any suggestions on what to look for next?