Pilot Light Goes Out.

 
Thread Tools Search this Thread Display Modes
Old 11-22-2017, 09:48 AM   #1
Pro
 
flashheatingand's Avatar
 
Trade: H.v.a.c.
Join Date: May 2008
Location: Boise, Id
Posts: 3,862
Rewards Points: 3,412

Pilot Light Goes Out.


I had a quirky service call that lasted awhile.

Originally, the issue was a pilot light issue. 12 year w/h. Thermocouple was corroded, and there was a bunch of rust on the burner assembly... Changed out the thermocouple, cleaned the pilot & burner, and all was good for about two weeks. Customer decided to just replace it.

Two days later pilot out.. Rel-it, checked gas pressure, with all other appliances fired, and it checked out. Hmmmph. Weird,....

About another three days, and no hot water. This time, I noticed puddling by the w/h nipples....no leaks. Relit, and called the tech service for any ideas. They sent me a new valve. I did not use it, as I found something that was amiss. Addressed this issue, and haven't had a call back since.

Any idea of what it could be? I won't leave folks hanging forever, just something one should check within a mechanical room.
__________________
http://www.37flash.com/
flashheatingand is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 11-22-2017, 09:03 PM   #2
Capra aegagrus

 
Tinstaafl's Avatar
 
Trade: Remodeler
Join Date: Jan 2008
Location: Central Pennsylvania
Posts: 21,374
Rewards Points: 214

Re: Pilot Light Goes Out.


Not much to go on there. Exhaust duct/chimney?

Advertisement

Tinstaafl is online now  
Old 11-22-2017, 10:35 PM   #3
Pro
 
flashheatingand's Avatar
 
Trade: H.v.a.c.
Join Date: May 2008
Location: Boise, Id
Posts: 3,862
Rewards Points: 3,412

Re: Pilot Light Goes Out.


Answer was a lack of combustion and dilution air. The grills were there. I figured that maybe the sheet-rock guys covered them up inside. But, when I removed the exterior grills, I saw screens that were completely blocked with dust/dirt.

Never seen that before. As this was one of those, narrow row-houses
(built in the late 90's early 00's), with the furnace and w/h in mechanical room, out back.

Frequently it's those simple things. Probably wouldn't hurt to inspect grills in those setups.
__________________
http://www.37flash.com/
flashheatingand is offline  
The Following User Says Thank You to flashheatingand For This Useful Post:
SmallTownGuy (11-23-2017)
   
 
Old 11-22-2017, 10:57 PM   #4
Capra aegagrus

 
Tinstaafl's Avatar
 
Trade: Remodeler
Join Date: Jan 2008
Location: Central Pennsylvania
Posts: 21,374
Rewards Points: 214

Re: Pilot Light Goes Out.


That's some pretty impressive choking; I never ran across that either. Seen plenty of pilots blown out by downdrafts, though.
Tinstaafl is online now  
Old 11-23-2017, 12:14 AM   #5
Pro
 
Randy Bush's Avatar
 
Trade: Exterior Remodeling
Join Date: Mar 2011
Location: Great Falls, MT
Posts: 4,437
Rewards Points: 38

Re: Pilot Light Goes Out.


In the past on my own stuff because of where the W/H was I ran a vent pipe from outside right down close to the burner to make sure it gets plenty of fresh air. Never have had any problems. Figured it could not hurt anything.
Randy Bush is online now  
The Following User Says Thank You to Randy Bush For This Useful Post:
flashheatingand (11-23-2017)
Old 11-23-2017, 11:09 AM   #6
Pro
 
flashheatingand's Avatar
 
Trade: H.v.a.c.
Join Date: May 2008
Location: Boise, Id
Posts: 3,862
Rewards Points: 3,412

Re: Pilot Light Goes Out.


Quote:
Originally Posted by Tinstaafl View Post
That's some pretty impressive choking; I never ran across that either. Seen plenty of pilots blown out by downdrafts, though.
The key was puddles by the w/h nipples. The fittings were not leaking, so I knew the moisture had to be coming from somewhere... Which led to the thought that it had something to do with the fire and exhaust.

In retrospect, I probably should have removed the screens altogether. After all, it was a mechanical room, sealed from the living quarters.

Advertisement

__________________
http://www.37flash.com/
flashheatingand is offline  
The Following User Says Thank You to flashheatingand For This Useful Post:
Tinstaafl (11-23-2017)


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Double pole single throw light switch? Philament Electrical 2 09-20-2016 08:25 AM
Sizing a Pole Light Base 5.4Lariat Architecture & Design 0 05-31-2012 02:45 PM
Door jamb light switch Jer Electrical 19 08-29-2011 08:48 PM
Pilot Light on A.O. Smith Gas Water Heater Keeps Going Out dprimc Plumbing 7 10-10-2010 02:21 PM
ceiling fan light won't go on jhcontracting Electrical 11 07-17-2010 09:22 PM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?