Fireplace burner not igniting

[mrclaassen]

Fireplace problem

I have a DVR6-CMNS series fireplace. The burner will not turn on.

• Pilot light lights and stays on
• Physical inspection of pilot and flame contact points with thermocoupler and thermopile look good.
• Thermopile registers 540mv when switch is off and 490mv when switch is on. (Shouldn’t this drop by half or at least 100mv?)
• Tried bypassing the switch at the switch and directly at connection point - no ignition of burner
• Disconnected all wires and measured ohms between th and tp - reads 49 ohms (this should be between 1-2ohms, correct?)
• Tried turning switch on and holding flame directly to burner to ensure it was not just a pilot light/burner ignition issue

Is my valve just bad?



Began to tear the thing apart because over the last two years it had been sooting.

 

[Whitenuckler]

Fireplace problem

I have a DVR6-CMNS series fireplace. The burner will not turn on.

• Pilot light lights and stays on
• Physical inspection of pilot and flame contact points with thermocoupler and thermopile look good.
• Thermopile registers 540mv when switch is off and 490mv when switch is on. (Shouldn’t this drop by half or at least 100mv?)
• Tried bypassing the switch at the switch and directly at connection point - no ignition of burner
• Disconnected all wires and measured ohms between th and tp - reads 49 ohms (this should be between 1-2ohms, correct?)
• Tried turning switch on and holding flame directly to burner to ensure it was not just a pilot light/burner ignition issue

Is my valve just bad?



Began to tear the thing apart because over the last two years it had been sooting.

Easy DIY Fix: Gas Fireplace Won't Stay Lit | Priddy Chimney

Dealing with a gas fireplace that won't stay lit? Check out this post from Priddy Chimney, and contact us for Maryland fireplace repair.

priddychimney.com

Hi - Maybe this will be of some help. Good luck. PS - If you start changing parts, and it does not solve the problem, then you may have just bought a spare part. OK solution if the price of parts is OK, and you depend on your fireplace in an emergency.

 

[mrclaassen]

Thank you for the reply. I am wondering if there are any more definitive tests I can run on the valve that would verify the problem before just switching out parts. Thanks!

 

[Whitenuckler]

Thank you for the reply. I am wondering if there are any more definitive tests I can run on the valve that would verify the problem before just switching out parts. Thanks!

If you can figure out the manufacturer and PN of the valve then you could pull the data sheet which should show the coil resistance.
I had a Napoleon natural gas fireplace a few years back, but never had to trouble shoot it. I have a DC power supply so I could test the valve. Should you not hear the valve click when you turn it on?

 

[DAKSY]

Try “rapping” on the valve regulator head with a plastic screwdriver handle. Could be stuck. Don’t beat the crap out of it. Just a couple of sharp raps.