Model reference
A.O. Smith GAHH40100
Water Heater
1 document17 error codes3 service modes
Available documentation
Service Manual
- Service Handbook for Standard Residential High Efficiency Atmospheric Vent (Fvir) Gas Water Heaters56 pg
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Error codes (17)
CodeMeaning
1Communication error between the upper (electronic control display) and lower…10Air pressure switch contacts remain open longer than 5 seconds after the…11Flammable Vapor Sensor is open.12Flammable Vapor Sensor is shorted.13Temperature sensor (thermistor) inside the immersion probe is open.14Temperature sensor (thermistor) inside the immersion probe is shorted.15One or both temperature adjustment buttons are stuck.16No current to Power Anode (P-ANODE OPEN).17Power Anode circuit failure.2Self-diagnostic tests have found a problem with an internal circuit.3Ignition/flame failure4Weak flame sensor current.5Water temperature in the tank has exceeded 185°F (85°C) and has activated the…6Air pressure switch contacts remain open longer than 11 seconds after the…7Air pressure switch contacts remain closed for more than 5 seconds when they…8Open ignitor circuit.9Flammable Vapor Sensor has detected the presence of flammable vapors and the…Service modes (3)
- Field Service Mode1
- FV-Sense Reset Sequence1
- Temperature Scale Selection ModePress both temperature adjustment buttons (COOLER and HOTTER) at the same time for more than 5…
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