Honeywell Programmable Thermostat Heater "circuit breakers air handlers" Questions

...circuit breaker to your air handling unit. You can ensure you have the right one by putting the fan switch in "ON". When you turn off the right breaker, the fan will stop running. :-) I hope you find ...

...circuit breaker for the air handler. If you have or can get a voltmeter, check for power on the transformer primary (120vac) and the output from the secondary (24vac). If you can't get a voltmeter ...