Pilot light out again

Discussion in 'Water Heaters and Softeners' started by Peter_6605, Sep 5, 2019.

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  1. Sep 5, 2019 #1

    Peter_6605

    Peter_6605

    Peter_6605

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    I have a Richmond, Direct Vent, 50 gallon water heater and the pilot light likes to go out once or twice a month. I usually find out when I am standing in the shower and find I am showering with 80 degree water. So what have I done. Several months ago I sprinkled pixie dust on the problem and replace the igniter and flame sensor unit. It seemed to help for about three months and then the problem came back. I can not believe the unit has gone bad again. relighting the water heater is easy. I only push and hold the button down for a couple of seconds, hit the spark, look down to make sure it is lit and let go of the light button. ( then turn it on) It would seem if the pilot and flame sensor was an issue I would have trouble relighting. What are the chances the gas valve is the problem or is it possible that the main burner shutting off is blowing out the pilot. I know many of you have run across this problem and have tricks to fix it. The water heater is only 6 years old and the tank is in great condition. Suggestions please.

    Peter

    I had the new igniter / flame unit out last Saturday - checked the pilot orifice, main burner and did not find any loose rust that would block the pilot gas line, or loose debris on the main burner.
     
  2. Sep 5, 2019 #2

    johnjh2o

    johnjh2o

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    Have you checked the air filter on the heater?
     
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  3. Sep 13, 2019 at 12:14 AM #3

    Peter_6605

    Peter_6605

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    This is a direct vent unit. I am not aware of an air filter on it. I do not remember seeing one when I installed it. Where would I look for it?
     
  4. Sep 13, 2019 at 12:42 AM #4

    johnjh2o

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    It should be on the bottom of the heater. Call the manufacture as the location varies.
     
  5. Sep 13, 2019 at 9:38 PM #5

    frodo

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    clean the flame sensor unit
    is your flame a pretty blue flame, or are their yellow lines in the flame?

    blue is good. yellow is not enough air
    which causes soot. which gets the flame sensor dirty
     
  6. Sep 13, 2019 at 11:10 PM #6

    Peter_6605

    Peter_6605

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    Nice blue flame, no soot on flame sensor. Flame sensor cleaned a month ago. Looked good then also. Flame out lastnight. :(
     
  7. Sep 14, 2019 at 3:18 PM #7

    RenewDave

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    Not enough air into the unit (air filter) or If your direct vent unit has a blower, it will have a pressure switch which can go bad.
     
  8. Sep 16, 2019 at 1:20 AM #8

    Peter_6605

    Peter_6605

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    Direct vent - water heater is right next to outside wall - no blower motor or pressure switch. I doubt if there is a intake filter. But just incase i took the vent cap outlet off the outside of the house and used the shop vac to blow in the center pipe and the air came out from around the center pipe . My assumption is if there is an intake filter i would be blowing opposite the air stream and dislodge any debris. Will try anything at this point.
     
  9. Sep 16, 2019 at 1:51 AM #9

    RenewDave

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    Brand and model number?
     

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