Hello everyone, I have Bryant 352MAV furnace. There are no indicated fault codes, but it does not want to heat. I can manually switch on the fan without heat. I have tried to reset it by cycling the control switch/gas valve/electrical switch with no results. Same with the flame roll out switch. The fuses are all OK. Does anyone have any suggestions?

Som

Try jumpering the R or RH and W terminals on the thermostat terminal strip.