SIT Nova 820 Valve - Low Flames

[Marc Leidig]

Stumped.
I have a fireplace w/ SIT Nova 820 MV (NG).
When turned on. There is super low output on Burner. I mean... flames 1/2" high at most and not all the orifice light.

Tests
1. Pilot. lights and stays lit. So I did not bother testing thermocouple.
2. Thermopile MV - Test . Tests good - Both measurements (w and w/o Pilot) are within range.
3. Gas Pressure test w/ manometer. Both Input and Output Measurements test within range
4. FYI for Testing I also removed any exterior switches and am testing with a jumper at the valve.

QUESTION - Can valve output on pressure test be good, but Valve output to burner be bad?

Photo is w/ the Valve turned on. Very little flame, almost non existent

Fireplace is Wolf Steel LTD (Napoleon) GD70 w/ Phazeramic burner

 

[DAKSY]

In most instances, low flames on the burner of a gas stove can indicate a partial blockage of gas flow. That blockage occurs BEHIND the burner orifice. The orifice needs to be pulled & the gas line behind it needs to be cleared with a Qtip or small bottle brush.

 

[Marc Leidig]

In most instances, low flames on the burner of a gas stove can indicate a partial blockage of gas flow. That blockage occurs BEHIND the burner orifice. The orifice needs to be pulled & the gas line behind it needs to be cleared with a Qtip or small bottle brush.

TY. I think you’re on the right track. My next post will be how to get to the orifice on my particular fireplace. Crazy.