Question about Goodman GMS90703BXA Heater
The corresponding code says "open high limit". I havent timed it but the initial cycle seems like it lasts 20 minutes or more. Thanks for any help!!
The high limit is sensing the internal temprature of the furnace.If your filter is very dirty or you have to many of the registers/dampers shut it will cause the temp. of the furnace to exceed its rating and the high limit will open the circuit and shut down the flow of gas. Your blower will then run until the furnace has cooled and the switch will close and allow it to come back on. This is bad for your furnace, make sure your filter is clean and you dont have to many registers shut. If you have run the unit without a filter the problem could be much more sever requiring blower wheel and coil cleaning and possibly a cracked heat exchanger.
Posted on Sep 12, 2009
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