Question about Procom ML060HPA Heater

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Pilot light not touching thermocouple

I need to adjust the pilot light to contact the thermocouple..it is not obvious how to do that..

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If cleaning does not work you will need to replace the thermocouple or the ODS Pilot Assembley. You can contact Master Parts at 800-446-1446 and they carry part for ProCom. Thank you

Posted on Feb 08, 2010

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I would first check that the pilot orifice is not partially clogged. I would then make sure all gas filters (yes, even LP and natural gas systems have filters) are clean (inlet to gas valve).

Usually there is a small screw somewhere on the valve that adjusts the pilot. It will be covered by a screw or cap.

Reply back what you find and I will help further.

Posted on Jan 29, 2009

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How to work on 18r duo therm pilot light will not stay lit


is the pilot light hitting the thermocouple end really well . if not it needs adjusted ,if it is then perhaps the thermocouple is bad and needs replaced .

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How do you adjust the pilot light flow on an old magic chef heating unit/ceiling mounted furnace?


How long is the pilot flame? It could be you can move the thermocouple into the flame by making adjustments of the metal holder. If the flame is small, there is an adjustment for the piolet flow in the control module where you turn gas on and off and light the pilot. It should be labeled and usually has a cover that must be unscrewed to reveal the adjusting screw. Need a bright flash light to see what you're doing.

Feb 28, 2015 | Heating & Cooling

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Not light


check to make sure that the poilet lite flame is touching the tip or top of the thermocouple.
the pilot lite needs to heat up the thermocouple so that the thermocouple opens the gas to the main gas log. a cold thermocouple shuts off the gas to the main gas log or gas burner and a hot thermocouple opens the gas to the main burner.
the pilot lite flame must be touching the thermocouple to heat it up.
pilot lite orface needs to be clear to let the pilot flame gas through with enough pressure so that the little flame can reach & touch the thermocouple. Pilot lite gas feed tube must be clear to let gas through. Use compressed air or a fine sewing needle, or even carb cleaner to clear out orface hole and gas feed line to pilot lite.

important!! WARNING:
if you use carb cleaner,make sure all the carb cleaner is dry,soaked up with paper towell or kleanex tissue and blowed out with compressed air , because carb cleaner can burn just like gasoline; so any carb cleaner must be compleatly gone before you attempt to lite the pilot lite.

May 20, 2013 | Lite On Laars Lite 2 Heaters: 250,000BTU...

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It runs out of fuel


sound like pilot lite is not getting thermocouple hot.
check that pilot lite flame is extending out to and touching thermocouple. If not, clean out pilot lite orface and pilot lite gas feed pipe all the way back to the main gas valve if necessary.
If pilot lite flame is touching thermocouple, then replace thermocouple

Jan 22, 2013 | Mr. Heater Big Buddy Heater

1 Answer

RHFE Rinnai 551FT gas heater is not working after 7 years


see this steps and fix it. God bless you
.
If there is no heat, check the electrical service panel for a burned fuse or tripped breaker. Relight the pilot light (see below).
If there is not enough heat, adjust the burner air shutter (see below); and clean the burner ports (see below).
If the pilot light does not light or does not stay lit, clean the pilot orifice carefully with a toothpick, test the thermocouple and replace it if it is faulty (see below).
If the flame flickers, adjust the pilot (see below).
If there is an exploding sound when the burner ignites, adjust the pilot to a higher setting and clean the pilot orifice and the burner ports.
If the burner takes more than a few seconds to ignite, clean the pilot orifice and adjust the pilot light.
If the burner flame is uneven, clean the burner ports. If the burner flame is very yellow, clean the burner; open vents in the furnace room to provide more air; adjust the burner air shutter.
To light the pilot on a standing-pilot (always on) ignition system, follow the lighting instructions located near the control. Otherwise, try these steps:
Light the pilot:
  1. gasfurnace1.jpg Press and hold the pilot control knob to start the pilot. Set the control knob to the pilot position. Hold a long match under the pilot gas port.
  2. Press the control knob; the pilot should light. Hold the control knob down until the flame is burning brightly (about 30 seconds). Release pressure on the knob, and turn it to the on position.
  3. If the pilot goes out when you release the control knob, try relighting, holding the control knob down longer. If the pilot again goes out, check the thermocouple (below).
Adjust the pilot:
  1. Remove any cap covering the pilot adjusting screw on a combination control.
  2. Turn the adjusting screw counterclockwise to increase the flame or clockwise to decrease it. It is correctly adjusted when the flame envelops the thermocouple bulb by 1/2 inch and appears dark blue with a small yellow tip.
Test and replace a thermocouple:
  1. Hold the control knob to pilot and light the pilot as above.
  2. Unscrew the thermocouple fitting with an open-ended wrench.
  3. Set a multimeter to the DVC (lowest voltage) scale.
  4. Clip one multimeter lead to the end of the thermocouple tube nearest the pilot and the other lead to the fitting on the other end of the tube.
  5. If the multimeter shows a reading besides zero, the thermocouple is functioning. Replace the thermocouple tube.
  6. If there is no reading, you will need to clean or replace the thermocouple following steps 7 through 11.
  7. Release the control knob and shut off the main gas valve on the gas-supply pipe that leads into the burner. Shut off power to the burner at the electrical service panel .
  8. Remove the thermocouple from its mounting bracket.
  9. Wipe the combination control clean and install a new thermocouple, tightening it by hand, then give it a one-quarter turn with a wrench.
  10. Insert the thermocouple into the pilot bracket, being careful to not crimp the tubing.
  11. Turn on power to the furnace and relight the pilot (above).
Adjust an adjustable burner air shutter:
  1. Set the thermostat to its highest setting to keep the burner running. Once the furnace has heated up, remove the burner access panel and loosen the locking screw.
  2. Open the shutter by turning it to the right until the blue base of the flame appears to lift slightly from the burner port surface. Then close the shutter until the flame reseats itself on the surface.
Clean removable burner tubes and ports:
  1. Shut off gas and power to the furnace.
  2. Unscrew or loosen and remove the tubes from the supporting bracket.
  3. Carefully clean the tubes with a brush or vacuum, making sure not to damage the burner ports.
  4. Use a stiff wire to clear any debris from clogged ports.

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1 Answer

Adjusting thermo couple into flame on Pro-Com heater


You can't adjust the Thermocouple into the flame. But, you can clean the pilot assembly, so that the pilot flame doesn't curl (curve upward away from the thermocouple).

Turn off the heater:
Use canned compressed air with a straw nozzle (like you clean your computer with). Place the tip of the straw nozzle into the pilot tip and give it a quick shot of air. Look down the pilot from the tip and about 2/3rds of the way down, you'll see a whole in the side of the pilot. That's the ODS Sensor. Place the tip of the straw nozzle just barely into that hole and give it a quick blast of air. You'll probably see debris blow out the other side. Light the pilot, but not the burner. Is the pilot flame straight and now touching the thermocouple? If not, re-clean the pilot assembly.

That should solve your problem.

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1 Answer

On my patio heater the pilot light will light but goes out as soon as I release it, even after holding it down a long time. I can't get it to stay on to light the heater.


Check that the pilot light is directed at the thermocouple, a copper 'tube' that heats up when the pilot light is lit. You should be able to see a copper coloured small tube that the pilot light is directed at - if the pilot flame is not heating that tube then the main burner will not light.

If the thermocouple is being heated correctly, then it could be a fault with the thermocouple itself (can be replaced) or the gas valve.

If the pilot flame is not heating the end of the thermocouple you should be able to adjust its position so that the pilot flame is directed at it more accurately

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possibly a fowled thermocouple if the thermocouple doesn's sense the pilot flame then it will not send a signal to the gas valve telling it that its okay to open cause the pilot is lit.

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