Heat&Glo LP Fire flickering on & off...

[toomerh]

Just bought a house that is 7 years old and it has a LP Heat&Glo pass thru Model# ST-HVLP-IPI after it has been on for about 20-30 minutes the fire begins to flicker or turn off then back on then off then on... Makes no difference what the settings are, tried everything. Any suggestions?

 

[DAKSY]

Sounds to me like either a grounding problem or a flame rectification problem.
Do you have the owner's manual? There is a wiring schematic in there.
sometimes relocating the ground wire can help Find it, loosen the 1/4" Zip screw &
relocate it by punching another small hole in the bottom.
If that's not the issue, take a look at the pilot flame. See if there is carbon build up on
the metal probes within the flame. Make sure they are cool & then try to clean them with a damp rag.

 

[toomerh]

Thanks DAKSY - Yes I have the owners manual and installation manual. I will try your suggestions and keep you posted. Thanks for the info.
UPDATE - Ground screw was kind of loose so I removed it, put it back in same hole and tightened securely. As I removed the logs to clean the pilot I kind of forgot the exact positioning... I got out the "log positioning" instructions only to find the logs were placed incorrectly. Have put everything back together and so far so good!