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HOW TO FIX ERROR CODE 90 ON A NORITZ

Updated: May 24


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A code 90 indicates a combustion abnormality caused by an improper mixture of air and fuel. Possible culprits are insufficient gas supply, a blockage in the fuel vent or debris in the fan motor.

You will need a licensed contractor to resolve this error. He or she will check gas pressures, venting length, dip switches, etc.

 
 
 

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