Question about Scheu (85-FAC) Heater

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I have a SCHEU Products SPC - 85 Propane Heater that would not stay lit. I now cannot get it to light at all. The plug is firing. I assume it is the thermocoupler.

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Buffalo12980
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SOURCE: reddy heat/scheu kerosene space heater no ignition

Typical kero heater uses either a spark ignition or a hot surface. The hot surface igniter is very fragile. A small bump may break the elements. Flame is detected by a photocell, signal is sent to the lockout relay board. Change the igniter costs about 50 bucks.
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Posted on Nov 29, 2007

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Buffalo12980
  • 625 Answers

SOURCE: all pro spc-85

going through the backplate to the nozzle location is the thermocouple. it is a copper like tube that sits back from the actual flame. if you are looking for a replacement go to www dot desatech dot com.

Posted on Dec 11, 2007

  • 1 Answer

SOURCE: I currently have a Scheu

I have had the same problem on a smaller unit (30,000 BTU). I remove the cover, take the thermocouple out of the burner area, and clean it until bright with either scotch brite or very fine emery cloth. The deposit on the outside prevents it from tranfering the heat to the hot end of the thermocouple and in turn to the sensor. I usuall do this once a year. The cleaning hasn't worked for me recently but the unit is 12 years old now and I will look for something else to fix.

Posted on Feb 06, 2009

mxc2
  • 146 Answers

SOURCE: My 85-FAC heater wont stay lit when I release the

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

Posted on Oct 22, 2010

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I have had the same problem on a smaller unit (30,000 BTU). I remove the cover, take the thermocouple out of the burner area, and clean it until bright with either scotch brite or very fine emery cloth. The deposit on the outside prevents it from tranfering the heat to the hot end of the thermocouple and in turn to the sensor. I usuall do this once a year. The cleaning hasn't worked for me recently but the unit is 12 years old now and I will look for something else to fix.

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Check the thermocouple, it is a very small diameter copper wire that goes from the gas valve to the burner. Make sure it is being hit by the flame. If it is, remove it and go to a good hardware store with it and get a new one.

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