Questions & Answers for: error a1 Water Heaters

...A1 followed by 21. Does anyone know what this code refers to. It is not in the owner's manual and I can not find any reference to it online. error code 21 is malfunction of air intake filter switch. ...

A1 error code 21 A1 This means the air intake cover problem. 21 Malfunction of Air Intake Filter Switch Ensure air filter door is properly seated. Ensure front panel is properly installed. Error codes

...an error message when the hot water tap is turned on, it says A1 then 79 you proably have a fan motor fault or the circuit board got damage when the power came back on..you will need to contact ...

...error code A1 21 is malfunction of Air intake filter switch Ensure air filter door is seated. Ensure front panel properly installed Add a comment for more free help. Also take advantage of fixya ...

...A1 and 21 and not heating the water. Error 21 means the air intake cover problem. Malfunction of Air Intake Filter Switch Ensure air filter door is properly seated. Ensure front panel is properly ...