Propane gas stove inop !

[afterburn 549]

This resembles a wood stove -with a stovepipe, a glass front.
Is pretty simple-

[cabmandone]

Check your inlet pressure to the gas valve. Should be a plug near the main gas line with an allen head. You'll need a gas pressure gauge. On propane systems you can have two gas pressure regulators. One at the tank stepping down the high pressure and then another that drops to your final pressure of around 12" water column. You could have a problem with inlet pressure.
Assuming when you mention you replaced the "regulator" you're talking about the main gas valve. Does it come converted to propane or did you have to install the correct spring to convert the valve?

[afterburn 549]

To assume or presume is always the wrong thing to do.
I did not replace the reg at the tank, but did replace the Robert Shaw regulator what ever it is under the stove. (Robertshaw)
Brand new 600 bucks!
none Chinese.
It could be line pressure as that is all there is left.
The other appliances work fine in the place running off the same tank.
I am suspecting perhaps a defective Pile, that is my next guess B4 i call the prooofesionallls

[cabmandone]

Pilot light works so that clears the thermocouple and the pilot side of the valve.
Next steps:
Check inlet pressure at the gas valve. On LPG it should be around 11-13 inches water column
Check main valve outlet pressure when there's a call for heat. On gas furnaces that's typically in the 11 inch range so I'd think your
If you've replaced the valve, thermopile and thermocouple, you're left with a pressure problem. Could be as simple as a plugged burner orifice. But again knowing the inlet and outlet pressure at the valve will really help in troubleshooting. The main valve will only stay open for a very brief period before the flame sensor will close the valve absent any flame. But in that short time, if the main valve opens and you see pressure, the problem is then beyond the valve.

[afterburn 549]

tapping/wrapping on the regulator under the stove (Robertshaw) will make the thing come on and work normal after that until it shuts off and has to come back on.

I am going to replace the pile just one more time. then it is time for the pressure check

[cabmandone]

When you've got two gas valves (old and new) and two flame sensors (old and new) acting the same way, the odds of it being the valve or flame sensors is pretty slim. Not saying it's not possible... but the odds are pretty slim. Good luck!

[greglepore]

That Robertshaw control price is nuts. They are generally around $100...

[afterburn 549]

Thanx thus far folks -
I think I have learned something.
I presumed all thermopiles or generators are the same, like thermocouples.
Not so?
From what I can gather there are different ones for different applications as strange as that seems.
So I have ordered the correct part number for this unit. The one I bought the other day was just a generic off-the-shelf at the hardware store.
Hope this works new one works on arrival..
If not I will get a pressure gauge and see what it is at the stove.
thanx

[cabmandone]

I'm not well versed in the thermopiles but I think they produce different millivolt outputs.

[afterburn 549]

It has a pilot light all ok.
The burner will not fire off.
Apparently, Thermopiles have different operating ranges depending on which one.

[cabmandone]

What's the model of the stove you're working on? I'm curious what generates the call for heat .

[afterburn 549]

Devore Stove.
It is a thermopile next to the pilot and a thermocouple on other side of it .

The Tstat closes and the pile is supposed to generate enough electrical power to lift the valve for the propane to come in, and VILOA the burner fires off.

No the worst problem in the world, just aggravating.

[70SATMan]

Originally Posted by afterburn 549

Devore Stove.
It is a thermopile next to the pilot and a thermocouple on other side of it .

The Tstat closes and the pile is supposed to generate enough electrical power to lift the valve for the propane to come in, and VILOA the burner fires off.

No the worst problem in the world, just aggravating.

Devore or Dovre?

[70SATMan]

Originally Posted by afterburn 549

Devore Stove.
It is a thermopile next to the pilot and a thermocouple on other side of it .

The Tstat closes and the pile is supposed to generate enough electrical power to lift the valve for the propane to come in, and VILOA the burner fires off.

No the worst problem in the world, just aggravating.

duplicate post,,,

[afterburn 549]

IDK, they are all just a metal box with the same equipment in them that makes them work (basically)

[cabmandone]

If you have a V.O.M, check to see how many millivolts the thermopile is producing. It looks like the thermopile should be producing a minimum of 300 millivolts from what I've found.

Also, have you tried putting a jumper in place to bypass the thermostat? And looking at the pilot flame, is there good coverage of the thermopile?

[greglepore]

Originally Posted by cabmando

If you have a V.O.M, check to see how many millivolts the thermopile is producing. It looks like the thermopile should be producing a minimum of 300 millivolts from what I've found.

Also, have you tried putting a jumper in place to bypass the thermostat? And looking at the pilot flame, is there good coverage of the thermopile?

This. If voltage is good and it fires consistently with a jumper, suspect the thermostat. You can also take one thermostat lead off, make sure thermo is closed, and check voltage across it. Sometimes if the voltage is marginal tapping can release the solenoid.

If that checks out, suspect regulator or pressure. Also, some Robertshaw control units have internal regulators- make sure its set up for lp if that's what your using, or blank it off if using a low pressure regulator ahead of the unit. They sell a blanking plate for that.

Went thru all of this with a greenhouse heater recently,.

[afterburn 549]

Yes and thanx. the new Thermo flunked the test, that is when I discovered there are different calibrations to be had.
Who knew?
Not I!

[afterburn 549]

Update-
Fixed.
Installed a whole new bracket with the thermocouple, pile, igniter, pilot tube and flame holder and all.
This fixed it.
Lesson=replace the cheap stuff first.

[cabmandone]

Was it a bad carryover wing on the old assembly not getting good flame to the new thermopile?

Glad you got it fixed!