Sticking Gas Valve?

Reply

  #1  
Old 03-20-20, 06:09 PM
R
Member
Thread Starter
Join Date: Sep 2014
Posts: 5
Received 0 Votes on 0 Posts
Sticking Gas Valve?

Good evening Gentlemen. I've had an issue with my furnace for quite some time. I've been able to "fix it" for days or months before it occurs again, thus have been slow to fix it right.

Occasionally it will blow cold air when heat is called for.

Starting a new heat cycle:
1) exhaust blower kicks on presumably to clear out any fumes
2) The glow strips comes on. Then after a few seconds I hear a click of what I assume is the gas valve solenoid, but no gas comes out, then the glow strip will eventually kick off.

if I give the gas valve a tap with a hammer (not hard) right after I hear it click generally the gas comes out, fires up heat and away we go for weeks or month. Eventually it will fail again. Once I had to try hammer trick several times before I got it to work.

Is the problem surely a sticking gas valve? or it is possibly something else I should look for? bad wire connection?

Furnance is a Ruud model # UGPH-10EAMER )(natural gas)
Gas valve is a VR8205H 8016

Thanks for any insight
 
Sponsored Links
  #2  
Old 03-20-20, 06:26 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 57,022
Received 835 Votes on 782 Posts
Very rarely does a gas valve stick. You could have one of several problems.

1) solenoid coil wiring is broken
2) wire broken off of connection tab inside the valve.
3) external wiring terminals are corroded.

Try removing and reinstalling the connections a few times.
Other than that there isn't much you can do.
 
  #3  
Old 03-21-20, 04:02 PM
R
Member
Thread Starter
Join Date: Sep 2014
Posts: 5
Received 0 Votes on 0 Posts
Thanks PJmax! I will check into those.

But if I am hearing a "click", doesn't that suggest the solenoid is getting voltage?

When the furnace is working, immediately after the click the natural gas flows out. When its not working, I hear the same click but no gas flows, unless I whack it with a hammer.
 
  #4  
Old 03-21-20, 04:05 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 57,022
Received 835 Votes on 782 Posts
If something inside the gas valve clicks that it's not likely an input wire problem.
Many gas valves have a redundant or two solenoids that open to pass gas.
 
Reply
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


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: