Check pressure switch for inducer motor. If switch closes, check for crack in ignitor. If gas valve opens and you can hear/smell gas, the ignitor is bad probably. If pressure switch isn't closed you need to check for blocked vent/chimney/heatexchangers.
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Check pressure switch for inducer motor. If switch closes, check for crack in ignitor. If gas valve opens and you can hear/smell gas, the ignitor is bad probably. If pressure switch isn't closed you need to check for blocked vent/chimney/heatexchangers.