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 g71 mmp e228 error code
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Posted - 02/06/2011 :  12:46:22 PM  Show Profile  Reply with Quote
Can anyone help me diagnois the error code 228? My unit is only a couple of years old. I had a power outage last night and then the problem started.



192 Posts

Posted - 02/06/2011 :  1:39:32 PM  Show Profile  Reply with Quote
That code is "unable to perform pressure switch calibration". Nothing you can do about it. The circuit board may be damaged by the power failure (brown out or surge). Need to call a experienced Lennox tech. Furnace may have a 10 yr warranty on parts and as long as it does not look fried/smoked they may get it under warranty.

Check the vent pipes outside for blockage B4 calling for service. That usually is the reason for that code.

Good Luck

Cut it twice and it is still too short. :":
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