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Vaillant boiler pilot sparks but there is no flame

Natural gas boiler it does not fire

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 41 Answers

SOURCE: yellow pilot on heater

Best Solution posted on May 06, 2008 4%20stars.png
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soleman13au
Rank:master_s.gif Master
Rating: 90%, 19 votes
Hi mitalee1
All it needs is a good blow out with compressed air. They tend to carbon up in the pilot light area. You will probably also find it is very dusty inside. Easiest way to clean the carbon out is to remove the hose at the heater and with compressed air blow through the fitting where you have removed the hose. Make sure you hold down the start button so the air can get through to the pilot light and jets. Don't connect the electricity for the fan when you do this. If you can get to the top of the pilot light it may help to give that a blow out too.
To clean it out internally you only need to remove the front panelling. Just follow the screw configurations *** you go. I asm not familiar with that type of heater so thats about the best I can do. Regards Bryan

Posted on May 07, 2008

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  • 1 Answer

SOURCE: natural gas patio heater

make sure there is no dust dirt spider webs in the pilot hood if u have a nice blue flame coming from the pilot and u held the pilot knob down for at least 30 sec
and it still doesn't work then u have a bad THERMOCOUPLE

Posted on Oct 08, 2008

  • 832 Answers

SOURCE: boiler won't fire even though the pilot is lit

Check if the ignition plug works. Upon putting your boiler on, a spark will normally trigger the
the firing. Then, check the ignition transformer if it works. Check the secondary voltage which is between 15000 to 20000 volts to trigger the ignition plug and the boiler to fire. If no spark,
have your ignition transformer replaced to make it work.

Posted on Sep 21, 2009

billyvangogh
  • 108 Answers

SOURCE: big old Hydro Therm boiler rolls out flame at

This may be normal it's hard to tell from your description , The flame could possibly rollout for a second or 2...depending on the venting , how far the vent is from the chimney etc....you shouldn't hear a "Mini Explosion" you may hear the gas ignite with a bit of a woooosh...depending on the size of the boiler this could be quite normal...Boilers can be dangerous when they get plugged up or dirty....although Hydrotherm makes an EXCELLENT Cast Iron Boiler...I would still have it checked by an expert to be on the safe side....you should also have a "Slow Opening" valve which would eliminate that problem if the valve is working correctly , but it's possible it was replaced at some point with a regular opening valve and this could be the reason as well

Posted on Nov 01, 2009

SOURCE: Temco DV6400N fireplace will not turn on. Pilot

Do you have a remote that turns the unit on and off
and has different heat settings? Could be the batteries are bad in remote

Posted on Jan 02, 2010

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