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    msf328's Avatar
    msf328 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jan 4, 2018, 07:18 PM
    Not hot water in house but hot water heater goes on
    I have no hot water in the house. But the gas hot water heater goes on for like 30 seconds and then goes off
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #2

    Jan 4, 2018, 08:05 PM
    30 seconds On and Off cycle is not enough to heat up water inside the heater. Some on-going problem is shutting the heater down to prevent damage. That is why you don't have hot water in your house

    Before you do anything, make sure you have enough gas going to the heater... Then...

    1. Check VENT to make sure it is not obstructed (all the way to the roof )
    2. Check water heater air intakes for being clean and unobstructed
    3. Replace Thermocoupling.
    4. If still not working - than it may be the gas safety valve built into the thermostatic valve. That one is expensive and when you add cost of installation, you may be better off getting new water heater

    Let me know how you did

    Milo
    talaniman's Avatar
    talaniman Posts: 54,325, Reputation: 10855
    Expert
    		  
    #3

    Jan 5, 2018, 02:17 PM
    May I ask if you watched the video series, I gave you in your first post? What did you think?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #4

    Jan 5, 2018, 04:35 PM
    Hi guys

    Msf328...we answered your first post. Maybe you aren't sure how the site works? Check out Talaniman's videos at the first post, OR (as I stated in the first post)...

    Call the manufacturer of the water heater and connect with the technical support guys. Give tech. support the model number and the serial number of the water heater and describe your problem... they will tell you what to do next.


    If this heater is 15 year old or less it sounds like the air vents to the heater are clogged and the closed combustion chamber is starved for air. If the heater is older than 15 years then you should have an open combustion chamber water heater and there are number of different things that could cause the problem.

    Call tech, support and get straight down to answers on the problem.

    Good luck!

    Mark
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