Gas Fireplace won't stay lit

Status
Not open for further replies.

Jim1971

New Member
Nov 28, 2013
1
Maryland
Hi,
I am new to this forum, so I hope I give all the required information.
We have a newly installed (3 weeks) Mendota Full View 46 on propane.
It was working fine, until yesterday when I went to light it ... it lit up and the flames went down to off and the pilot went out too. The pilot relit itself, and when I tried today it is still doing the above.
It is not unusually cold nor is it windy. Any help would be appreciated.
Thanks
Jim
 

webbie

Seasoned Moderator
Nov 17, 2005
12,184
Western Mass.
Relit itself? Doesn't your unit require you to light it?

If it's electronic ignition, that's a whole ball of wax in itself. But if it is standing pilot, there are a couple possibilities....everything from a bad regular or regulator setting on the tank to kinks in the line to a bad thermopile, etc.

Very little chance it relates to weather - unless the LP tank is undersized and getting iced up because it's not designed to deliver the BTU required.
 

altmartion

Feeling the Heat
Nov 8, 2013
388
pulaski ny
how long was the pilot out? from what I see in the spec sheet it is intermittent pilot. is it on a thermostat? is it the stat cycling? that's kind of what it sounds like. jump it out and see if it works correctly, if so the stat is most likely to blame
 

xtrordinair

Member
Dec 28, 2012
232
southern indiana
+1 on the flame rectification. Either that or the ground wire is loose...
good call daksy i have not seen to many loose or bad ground wires in the field but its possible
 

altmartion

Feeling the Heat
Nov 8, 2013
388
pulaski ny
good call daksy i have not seen to many loose or bad ground wires in the field but its possible
it's fairly common in hvac. expansion and contraction of the metals will loosen grounds and other connections. it doesn't help that they sometimes come loose from the factory either. and normally they don't get checked. I am guilty sometimes too.
revers polarity is a common problem. it will do exactly as the op is experiencing. but does that unit require line voltage?
 

xtrordinair

Member
Dec 28, 2012
232
southern indiana
it has line voltage for the control module for the fan and a possible accent light as well as the transformer to convert it to about 3volts dc .the system is designed to be able to run on batteries when theres a power outage except the light and fans of coarse.
 

altmartion

Feeling the Heat
Nov 8, 2013
388
pulaski ny
it has line voltage for the control module for the fan and a possible accent light as well as the transformer to convert it to about 3volts dc .the system is designed to be able to run on batteries when theres a power outage except the light and fans of coarse.
usually polarity issues show immediately though. not to say it can't happen, lord knows how, but some things are unexplainable. unless someone has done some rewiring in the circuit or panel I would pretty much rule it out. gotta be something simple.
 

xtrordinair

Member
Dec 28, 2012
232
southern indiana
the biggest problem i run into is techs that have been there before me and they dont really know much about how these more modern fireplace control systems work so they just start throwing parts at it, especially when theres just venting/draft issues causing it to act up.
 
  • Like
Reactions: DAKSY

altmartion

Feeling the Heat
Nov 8, 2013
388
pulaski ny
the biggest problem i run into is techs that have been there before me and they dont really know much about how these more modern fireplace control systems work so they just start throwing parts at it, especially when theres just venting/draft issues causing it to act up.
i'll be the first to admit, I don't know much about these. I do consider myself good at diagnostics. while they are not the same exactly, they are the same in principle. one thing I refuse to do even when I started 20+ years ago, I will not just throw parts at it. I will take the time to dig into the part that I think is the issue. most any part can be tested. yes, some are not worth it like a thermocouple but you still need a reading before you change it. I do however seem to follow some parts changers though. lol
 

Heatsource

Minister of Fire
Dec 19, 2011
1,064
Northern CA
a1stoves.com
good call daksy i have not seen to many loose or bad ground wires in the field but its possible
+3 on flame sensor.
or venting issue pulling flame away from the sensor.(check for turbulence)
also, lots of grounding issues\
Monesson technical just told me that the ignitor wire being bundled with the flame sensor can cause frequent drop outs and re-lightings...
 
Status
Not open for further replies.