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2011 AO Smith GPVH-40 (100) water heater: FV sensor tripped + water leaking

2011 AO Smith GPVH-40 (100) water heater: FV sensor tripped + water leaking


  #1  
Old 07-06-20, 08:47 AM
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2011 AO Smith GPVH-40 (100) water heater: FV sensor tripped + water leaking

Hi All,

Wanted to run something by you all. I have a 2011 AO Smith waterheater which is gas powered. I went into the basement and saw that water was spilling out, felt quite hot too the touch. I then noticed the error code on my thermostat and it was saying the FV sensor tripped, due to flammable materials being detected.

I took it out and measured 95k Ohm, where it should be like 10k-50k Ohm so thought it was shot and ordered a new one (and left it out). But what about the leaking?

I let it sit for a few hours with the fan and the water inlet off and then switched the water on again. When I call for hot water, under neat the tank it started leaking... I later measured the broken FV sensor again now it showed correct values.

Do I really have a leaking tank here? No water comes out when the water inlet is switch off (and possibly not when it's on- and when not calling for hot water).

Could the FV sensor tripped here due to the water leaking?

Any recommendations I can check?
 
  #2  
Old 07-07-20, 02:37 PM
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Do I really have a leaking tank here?
Sounds like the tank is leaking to me.
 
  #3  
Old 07-07-20, 04:09 PM
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If you have a leaking tank.... it shouldn't make a difference if it's heating or not.
Just being under pressure should cause the leak to occur.
 
  #4  
Old 07-08-20, 10:37 AM
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Had a plumber look. The FV sensor likely tripped due to the water and nothing else. Tank was leaking, 7 y/o ... replaced complete heater.
 
  #5  
Old 07-08-20, 01:58 PM
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I don't think an FV sensor on a gas fired water heater detects water vapor. Only thing you can do with a leaking tank is replace it.
 
 

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