Question about York Furnace Draft Inducer Blower Fasco # A224
"high Aux or spill limit switch open" York diamond 80 furnace won't heat. 4x flashing red light code.
where is this switch and how can I fix it?
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Posted on Jan 02, 2017
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.
Posted on Jan 21, 2010
SOURCE: I have a York Gas
These pressure switches are safety features on ALL new furnaces, if replacing the switch didn't solve the problem, you might want to make sure there is no blockage in the exhuast pipe like a birds nest, anything that would restrict airflow, is there inline fan motor in the exhaust pipe ? perhaps it's not working also.
Posted on Jan 23, 2011
OK so you replaced the Thermostat huh? OK well then did you also replace the Thermistor Temperature Sensor? or whatever is used? As often it's BOTH, also check the wiring from the sensor to the host, in any event if it's NOT that then all it can be is the controller board, most likely the Micro? Check any and all sensors first though.. try to get a service manual too, it's hard without one?
Posted on Oct 20, 2011
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