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Change thermocoupler on all pro 50000-85000 btu heater

All pro 35000- 85000 propane forced air heater. have cleaned thermocoupler. unit goes off after releasing start button

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If you have replaced the thermocoupler and it still wont stay lit then replace the gas valve.

Posted on Nov 19, 2014

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Posted on Jan 02, 2017

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Buffalo12980
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SOURCE: forced air propane heater won't stay lit

two items come into play here - 1) the hot surface cutout and 2) the flame detect Cd cell. Check alignment of the Cd cell or just replace it. The hot surface cutout has two terminals that plug into the two tabs on the millivolt generator.

Posted on Aug 22, 2007

SOURCE: All-Pro Kerosene Heater

I have a 100,000 allpro Kerosene heater I get sprake but won't lite I need help Thanks

Posted on Dec 03, 2008

  • 1 Answer

SOURCE: propane shuts off after releasing start button.

I have the same problem with my Reddy heater 55-f. Is it thermal coupling or relay?

Posted on Dec 08, 2009

  • 188 Answers

SOURCE: 150,000 BTU propane Reddy Heater shuts off after ignition

Is there a frost line on your LP tank, if so you may need to replace the tank with a larger tank or refill your tank. This can happen if the tank your using is too low or too small (use 100 lb tank or greater). If there is no frost line it may be an issue with the thermocouple. The manufacturer offers a service manual and owner's manuals on there site. This should assist you... www.desatech.com Thank you

Posted on Jan 28, 2010

hardrocko
  • 1476 Answers

SOURCE: I 50,000-85,000 All Pro Propane heater release red button fireout

If the red button has to be held down for a period of time to get the heater going it overrides the shutoff mechanism. If you are holding it the prescibed amount of time then either the hydraulic system which keeps your unit running is bad or out of place or the metering valve is bad. Check for a copper line with a bulb on the end. It should probably be in the fire created by the heater, if not bend it to be in the heat or very close. If this is ok then you may need to get a new burner for the unit which would probably mean buying an entire new unit as the cost would probably exceed the cost of a new unit. Let me know how you make out.

hardrocko

Posted on Feb 07, 2010

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I have a 225,000 to 375,000 btu propane heater that the gas valve will not open on. The igniter sparks I can see that .There does not appear to be a thermocouple unless it is built into the igniter. T


YOU MAY NEED TO CLEAN THE NOZZLE, THE FUEL FILTER, & POSSIBLY ADJUST THE PRESSURE AT REAR OF UNIT. MAKE SURE THAT THE FILTERS ARE CLEAR & UNIT HAS PROPER AIR FLOW OTHERWISE IT WILL OVERHEAT & TRIP THE HIGH LIMIT

Dec 25, 2012 | Reddy Portable Forced Air Propane Heater...

1 Answer

My all-pro propane heater will not stay lit for over thirty seconds after I release the red fuel start button,before the flame goes out it makes an air hissing noise right before it shuts off.Heater will...


This sounds like a problem with your thermocouple.

Just remove the end of the thermocouple from where is goes into the gas valve and leave the end that goes into the flame in place.

Clean the end of the thermocouple connect by scraping off just a little metal from the end just about there the nut tightens the thermocouple into the gas valve. After you have exposed some new metal do the same inside the valve where the thermocouple seats into the gas valve.
Use a small pic or similar item to scrape inside the gas valve to expose some new metal there also.

Now reassemble the thermocouple into the gas valve and see if the heater works.

Here is a link with some more instructions.
http://www.msservice.net/ts/reseat_thermo-clean_pilot-ODS.htm

If this does not solve the problem you may need a new thermocouple and you can find that at www.desaparts.com

Thanks

Jan 04, 2011 | All-Pro Propane Garage Shop Heaters - All...

1 Answer

My 35000 btu will not stay lit. after i take my finger off the propane gas butten the flame goes off. what is wrong. this is a ready heater


I would venture to say that it is the thermocouple not picking up signal to keep the gas valve open. You can try cleaning the bulb end with steel wool and positioning it in the flame remember the hottest part of the flame is out on the end.

Dec 20, 2010 | Reddy Heater-30,000 BTU Propane Forced-Air...

1 Answer

The heater wont start got power,got propane ,when i release the push in switch it wont start


YOU WILL NEED TO HOLD THE START BUTTON FOR ABOUT 2 MINUTES, ON YOUR FIRST START UP , TO GET THE FRESH GAS UP INTO THE UNIT

Dec 01, 2010 | All-Pro Propane Garage Shop Heaters - All...

1 Answer

The unit will light however after a few minutes of running the heater shuts off and does not continue to heat


Does this unit have an OXYGEN DEPLETION SENSOR ? if so, then are you using the heater in an area that is too confined or too closed-up? You say it is forced air, therefore the air must move continuously or the over-heat sensor will stop the gas since there is no air to remove the heat being produced. If this unit has a thermocouple flame sensor, the flame my not be touching thethermocouple sufficiently and the thermocouple thinks something is wrong and stops the gas. Or the thermocouple can be weak and not give a strong signal to allow the gas valve to stay open. This is common on heater and hot water heaters, and you simply change the thermocouple.
Good Luck, Macgivor

Nov 27, 2010 | Reddy HEATER RLP30 30,000-BTU PORTABLE LP...

1 Answer

Everything works fine except the heater will not remain lit when the push to start is released after the required 30 seconds to light.


Just remove the end of the thermocouple from where is goes into the gas valve and leave the end that goes into the flame in place.

Clean the end of the thermocouple connect by scraping off just a little metal from the end just about there the nut tightens the thermocouple into the gas valve. After you have exposed some new metal do the same inside the valve where the thermocouple seats into the gas valve.
Use a small pic or similar item to scrape inside the gas valve to expose some new metal there also.

Now reassemble the thermocouple into the gas valve and see if the unit works when you release the button.

Here is a link with some more instructions.
http://www.msservice.net/ts/reseat_thermo-clean_pilot-ODS.htm

If this does not work you may need to purchase a new thermocouple.
You can purchase the new part at www.allpartsinc.com

Nov 02, 2010 | Reddy Heater RLP100 Portable Forced Air...

1 Answer

Propane heater wont stay running


is the sensor for the thermocouple located in the right spot in the flame,remove it and if you have access to a propane torch,heat the end till its red hot and leave it connected to the gas valve,then start the unit and this will tell you if the sensor is properly positioned in the pilot flame on the unit itself,if not you could have a defective new thermocouple or another safety device keeping it from staying lit or the gas valve is faulty

Jul 28, 2010 | Reddy HEATER RLP30 30,000-BTU PORTABLE LP...

1 Answer

I 50,000-85,000 All Pro Propane heater release red button fireout


If the red button has to be held down for a period of time to get the heater going it overrides the shutoff mechanism. If you are holding it the prescibed amount of time then either the hydraulic system which keeps your unit running is bad or out of place or the metering valve is bad. Check for a copper line with a bulb on the end. It should probably be in the fire created by the heater, if not bend it to be in the heat or very close. If this is ok then you may need to get a new burner for the unit which would probably mean buying an entire new unit as the cost would probably exceed the cost of a new unit. Let me know how you make out.

hardrocko

Feb 07, 2010 | All-Pro Propane Garage Shop Heaters - All...

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