MEDIUMError Code
E225: Line Voltage Error (Furnace)
Furnace control board detected incorrect line voltage.
What This Error Code Means
Power supply voltage is outside the acceptable range.
Common Causes
Utility power fluctuation
Undersized wiring
Faulty transformer
Loose connections
Overloaded circuit
Affected Brands
LennoxCarrierTraneGoodmanRheemYorkBryant
How ROMA Heating Fixes This Error Code
Measure incoming voltage
Check all connections
Verify transformer output
Recommend electrician if utility issue
Install power monitor
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