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  1. #1

    Confused polaris water heater problems

    we have a 10 year old 100,000 btu polaris water heater that heats both domestic and about 800sqft of floor space. Recentley the heater stopped running. We brought in a gas heating specialist who has a number of years experience with polaris heaters. He started with a new igniter,cleaning and checking air intake and exhaust, then checking the control board, then replacing the gas valve, and the regulator, eventually he got it running but with hard start which let out a large bang everytime it started. After 3 weeks of the cannon going off i asked him to come back and see if we could minimize the bang. he talked to polaris Tech support and they suggested turning the mixture screw down on the gas valve, we did that and now he can not get it to stay on. We have now replaced the flow switch, checked for power there, put in a secondary regultor to get the gas values perfect and still it does not consistentley stay on. he has fiddled with the mixture setting, still nothing. he has now been here nine times, and is at wits end to what the problem may be, any ideas would be much appreciated,

  2. #2
    Join Date
    Feb 2008
    Location
    Altmar, New York, United States
    Posts
    5,103
    you need to find a new tech. is he using any instruments? is the gap right? it just seems like alot of parts are being thrown at this thing with no good results.

  3. #3
    Join Date
    Jul 2004
    Location
    Massachusetts
    Posts
    6,841
    How about just replacing the unit? 10-years is beginning to get long in the tooth methinks. I know, the warranty on the heat exchanger is 12-years but we've replaced furnaces with a lifetime warranty on the heat exchanger. There comes a point in time when it just feels good to stop beating your head against a wall. How about a nice Navien combo unit?
    If YOU want change, YOU have to first change.

    If you are waiting for the 'other guy' to change first, just remember, you're the 'other guy's' other guy. To continue to expect real change when you keep acting the same way as always, is folly. Won't happen. Real change will only happen when a majority of the people change the way they vote!

  4. #4
    it was one thing that led to another. he started by cleaning the unit, then a new igniter then cleaning the air in and out, then that didnt work and then he spoke with Polaris tech support and they recomended replacing the gas valve.
    Hes been using a manometer( hope thats right) and hes set it up for the values indicated in the operation manual

  5. #5
    Join Date
    Feb 2008
    Location
    Altmar, New York, United States
    Posts
    5,103
    i woyld have him start back at the igniter. is he sure the hx is not plugging?

  6. #6
    hes replaced the igniter twice now, as well as checked the voltage, the igniter is getting hot.

  7. #7
    Join Date
    Apr 2001
    Location
    MINN
    Posts
    938
    Did He do a CA. it could tell him something he is missing.

  8. #8
    Join Date
    Feb 2008
    Location
    Altmar, New York, United States
    Posts
    5,103
    plain and simple. you need a new tech to look at this. he is missing something someone else may find. and he is throwing parts it it to boot. usually delayed ignition is not this hard to diagnose. why did he put another igniter in? you must really like this guy because he is costing you a bunch of money. something sounds fishy.

  9. #9
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,753
    BadgerBoiler MN, this is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise here. Please apply to the AOPC today, thank you.

    You can find the rules for posting and qualifications here.


    Further infractions may result in loss of posting privileges.
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    How many times must one fix something before it is fixed?

  10. #10
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,516
    when he pulled the unit apart to clean everythin did he replace all the gaskets
    if not it may not be sealed properly and pulling air in from a differant place or blowing it out where it shouldnt causing the delay ignition

    these unit are touchy and need to be carefully put back together or you will continue to have troubles

  11. #11
    Join Date
    Jul 2007
    Location
    Beautiful, Philadelphia, the City of Brotherly Love!
    Posts
    1,120

    When you said he cleaned everything,

    did he also clean the burner? The burner can only be cleaned by blowing nitrogen or some other high pressure gas from the inside to the outside.

    If you let this go on long enough the heater will start to lock out on air switch.

  12. #12
    Join Date
    Feb 2010
    Location
    In a boiler room
    Posts
    7,222
    Quote Originally Posted by tinknocker service tech View Post
    when he pulled the unit apart to clean everythin did he replace all the gaskets
    if not it may not be sealed properly and pulling air in from a differant place or blowing it out where it shouldnt causing the delay ignition

    these unit are touchy and need to be carefully put back together or you will continue to have troubles
    Bingo.

    Burner gasket leaking.

    And just for the tech's info, he should never, never, never, change the gas adjustment on these burners without a combustion analyzer (CA). I have seen those just slightly out of adjustment causing them to output 1500 ppm and more of Carbon Monoxide.

    If your tech does not use a CA, do yourself a big favor and find one that does. Go to www.stopcarbonmonoxide.com to find a CA certified contractor.

  13. #13
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    IS this guy a plumber of a HVAC tech? I think with these newer tanless and HE storage tank domestic water heaters, when you have anything other than a leaking pipe, you are best ot contact a HVAC tech to trobuelshoot them.

    Honestly, I'm still not sure I'd recommed tnaless WH unless you have a very well trained and skilled plumber or its installed by a ehating & cooling contractor. A regular pipefitter, plumber will get over his head pretty quick. They become a parts changer really fast.

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