Question about Procom ML300HGA Heater

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Control knob The control knob has a small metal clip that fits over the shaft, it bends and just spins on control shaft.

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  • snowmastr Aug 04, 2008

    same problem and then knob falls off where can I get a new knob?

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You should be able to get a new knob from Master Parts. You can contact them online at www.masterparts.net or by calling 800-446-1446.

Posted on Jul 08, 2009

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Manual


There are several 'types' of electric air heaters. Some have solid-state control boards, others, bi-metalic strip, and open contacts. The most simple is a bi-metalic strip and an adjustment knob for the temperature. Turn knob to lowest setting, plug unit in, turn knob to full, then when room is comfortable, then adjust knob until you hear a click. now system will cycle on - off keeping the room at the temperature you set.

Apr 16, 2014 | Heating & Cooling

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.

Sep 30, 2012 | Heating & Cooling

2 Answers

Kozy world propane wall heater pilot will not light


This can be caused by several things:

1. The inline gas valve running to the the heater is OFF. Turn the valve ON.

2. The gas control knob on the heater is not exactly in the PILOT position. Unless the knob bottoms
out and you feel strong pressure (other than spring pressure) pushing back at you. It's not exactly
in the PILOT Position. Once the pilot lights, hold the control knob in for 30 seconds to 60 seconds
to allow the Thermocouple to full heat.

3. The pilot is dirty and needs to be cleaned, as do the burners.*

4. The LP Gas Tank is empty or to low to maintain te proper gas pressure.

* Here is a link to a demonstration on how to properly clean the pilot & burners.
http://www.desatech.com/techDocs/Cleaning%20Demonstrations.pdf

I hope this helps you to troubleshoot & solve the problem. Thanks for choosing FixYa.

Sep 23, 2011 | The Companion Group Kozy World Portable...

1 Answer

Control knob gets too warm and starts to melt/losen from shaft.


I don't know how old your heater is, but from what you have described, sounds like a run-a-way burner. In other words, the burner has failed and is producing to high a flame height. Thus, overheating the metal cabinet and causing the control knob shaft and knob to become extremely hot.

Although this heater has a stainless steel tube type burner, It is not beyond the possibility that the burner has rusted out somewhere along the burner tube and flames are shooting out in the wrong place(s). This could be especially true, if the heater was not cleaned and serviced on at least an annual basis.

The only way to check this out is by dismantling the heater cabinet, to expose all of the internal workings. It is not difficult to os, just be sure to turn the gas line to heater OFF and let it cool.

Remove the sheet metal screws along the outer 4 sides of the heater and the cabinet's front can be removed. Check the burner and it's gas connections carefully, to find any degradation that may have occurred, as well as any char marks inside the cabinet.

I have provided a link to your heater's Owners Manual, which should be of more help. You can download and print it if your so desire.

http://www.desatech.com/manuals/Vent-Free%20Heaters/107885-01.pdf

Until this problem is solved, it would be in your best interest to stop using the heater all together.

Hope this helps you find the problem and solve it.

Feb 27, 2011 | Desa International GWRN18 Infra-Red Wall...

1 Answer

I have a desa fireplace model CGCFTP 26K btu, THE PILOT WILL NOT STAY LIT, I believe that it is the thermocouple, would you confirm or deny


Many times this problem is because the thermocouple has developed a bad seating connection between the thermocouple fixing nut and the Thermo-Electric valve located inside of your actual control valve assembly.

Meaning the connection between the end of the thermocouple wire just above the thermocouple fixing nut and the seat which is inside the Thermo-Electric valve have a bad connection that does now allows current to pass through the connection and into the Thermo-Electric valve.

When you have a good connection here it allows the control valve to stay open and allows gas to pass through the control valve into both the pilot and the main burner, but if this connection is bad then each time you release the button the pilot light will goes out.

Now to try and resolve this service problem with having to purchase new and sometimes expensive parts.

Remove the thermocouple wire from the gas control valve Thermo-Electric unit by turning fitting counter clockwise with a 5/16 wrench

Once the thermocouple fitting has been loosened and the thermocouple has been removed inspect the thermocouple Power Unit Connector Contact (PUCC).

Although the PUCC may appear clean may times the PUCC has developed a thin layer of corrosion that prevents the thermocouple from sending the needed current to the Thermo-Electric unit resulting in a pilot flame that may only remain burning strong as long as the pilot button is being pushed by the operator.

After removing the thermocouple PUCC from the valve you will need to clean both the power unit connector contact and the Thermo-Electric valve seat contact.

The connecting will require that a small amount of new "Clean Metal" be exposed providing a new fresh metal seat for the PUCC and the Thermo-Electric valve.

With a safety blade or a metal pick expose some new metal on both the PUCC and then up inside the Thermal-Electric valve seat scraping just a small amount of old surface from each item.
Now reassemble the thermocouple wire back into your gas control valve and tighten the nut firmly to achieve a good solid seating connection.

This new fresh metal seat should allow the millivolt current generated from the thermocouple to energize the Thermo-Electric valve and allow the gas control valve to remain in the open position.

If this does not work you may need to order a ned Pilot/ODS assembly.

You can find that at www.msservice.net or www.allpartsinc.com

Thank you:

Nov 05, 2010 | Desa International CGCFTP Compact Heater

1 Answer

Have lost the control turn knobs for the ignition and heat settings


Gas control knobs can be very specific to the patio heater. Best to go for a universal or adjustable control knob, these have a grub screw that can be tighten to get a good fit, found this specialist patio heater company very helpful.

Oct 01, 2010 | Endless Summer 233000 Open Flame Patio...

2 Answers

The control knob is stripped. I need a new knob


You can contact Master Parts at 800-446-1446. They carry parts for ProCom units.

Dec 17, 2009 | Procom ML060HPA Heater

1 Answer

I need a control knob for my heater. How do I find a place that carries replacement parts. Model#RMC-LPC200DGP


I need a control knob for a Dyna Glo 10,000 BTU kerosene heater to fit over a half-round shaft 12/32" in diameter. Where can I get one?

Dec 12, 2009 | Dyna-Glo Heating & Cooling

1 Answer

Need Instructions to use Fireplace Gas Logs


There should be a set of metal cards attached inside the fireplace.
First you should read everything there.

I know you have to first light the pilot light.
And then there should be a wall switch.

The problem I have currently is that it won't stay lit when the artificial logs are there.

Nov 03, 2008 | Heating & Cooling

4 Answers

Fahrenheat baseboard heater knobs


go to a radio shack to find replacement knobs. get something called a "bar knob." this has a set screw which holds the knob on the thermo shaft. use a marker and print lo med high and off on the unit or use a brother p touch label maker.

Jan 10, 2008 | Fahrenheat Electric Convector Baseboard...

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