Question about Master Heaters Heating & Cooling

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I have 2 new Master Heaters, model MH135KTFA. Both had the air pump rotor shatter before the first tank of fuel was through. Replaced rotors, checked clearances, and they both failed again, Any idea w

Checked top and side clearances, filters were are clean, Fuel clean. Torqued assembly bolts. Motors turned freely after assembly.

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  • 12 Answers

This is a difficult question, if the rotor and blades are clean, not contaminated with anything, it seems to point in the direction of perhaps the parts expanding with excess heat. Is the motor running normally, is it overheating?? Is the area where it is being used particularly hot? Have you used it when paint spraying, sucking in paint,causing the rotor to stick. Is there any free movement on the motor shaft? There must be a reason but this is one of those faults which is not clear cut. Sorry I can't be more help.

Posted on Mar 03, 2015

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6ya6ya
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Posted on Jan 02, 2017

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tbugger
  • 232 Answers

SOURCE: master 115,000 will not stay running

It sounds as if your are having a fuel delivery issue. Always start troubleshooting fuel delivery problems with a pump pressure test. Air pump pressure is extremely critical on these computerized heaters. Instructions are at www.reddyparts,.com

Posted on Dec 03, 2008

tbugger
  • 232 Answers

SOURCE: heater wont light

Did you set the pump pressure to specs. If not, it won't ignite.

Posted on Dec 23, 2008

  • 163 Answers

SOURCE: My master heater will not ignite. i have replaced

The first thing to check would be the ignitor. If it is not working, then check the connections between it and the ignition control assembly. If the connections are fine, check to see if there is any voltage being sent to the ignitor. If there is then replace the ignitor, if not, then replace the ignition control assembly.

Posted on Dec 29, 2010

heatman101
  • 43501 Answers

SOURCE: I HAVE A MASTER MODEL B165TT FORCED OIL FIRED

Hi,


Here are a couple of tips that I wrote that tell you how to troubleshoot a Torpedo or Reddy heater...

Reddy Heater - Troubleshooting Torpedo Heaters





Torpedo Heater Pump Pressure Adjustment


heatman101

Posted on Jan 12, 2011

  • 4736 Answers

SOURCE: Rotor failed. Replaced, won't ignite.

Yes, I would say, it's possible. Try emptying the tank and see if you hear any ratting inside the tank, when you shake it. Once the pressure is off the tank, any debris may fall back into the tank.

You may also want to check the fuel filter for dirt and debris, as well as the air intake filter.
Also, there may be air in the lines.

In checking the Owners Manual for your model heater, there's not much there, as far as Trouble Shooting is concerned. Never the less, I am providing a link to it, You can download and print it for future reference, if you so desire.

http://www.desatech.com/manuals/Construction%20Heaters/000228-01.pdf


I hope this gets you started in the right direction.

Posted on Mar 08, 2011

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1 Answer

My heaters fan will not start, and the cercut breaker keeps opening.I thinking it needs a new fan motor


You are probably right, but there are 2 other possibilities. 1. the air pump rotor could be shattered, therefore binding the motor 2. the fan blade could possibly be binding (this happens mainly after storage periods....varmit nests)

All Pro Reference sheet

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1 Answer

Rotor failed. Replaced, won't ignite. Glow plug lites. Is it possible piece of rotor is lodged in fuel delivery system?


Yes, I would say, it's possible. Try emptying the tank and see if you hear any ratting inside the tank, when you shake it. Once the pressure is off the tank, any debris may fall back into the tank.

You may also want to check the fuel filter for dirt and debris, as well as the air intake filter.
Also, there may be air in the lines.

In checking the Owners Manual for your model heater, there's not much there, as far as Trouble Shooting is concerned. Never the less, I am providing a link to it, You can download and print it for future reference, if you so desire.

http://www.desatech.com/manuals/Construction%20Heaters/000228-01.pdf


I hope this gets you started in the right direction.

Mar 08, 2011 | All-Pro Forced Air Kerosene Space Heater...

1 Answer

My master heater will not ignite. i have replaced all air filters i have changed the back cover, it was cracked, i replaced the rotor and blades in the air pump and set the air at 6.4 pounds like the book...


The first thing to check would be the ignitor. If it is not working, then check the connections between it and the ignition control assembly. If the connections are fine, check to see if there is any voltage being sent to the ignitor. If there is then replace the ignitor, if not, then replace the ignition control assembly.

Dec 28, 2010 | Master Heaters B200BT

1 Answer

No fuel to the burner and no ignition


From your description I must assume that the motor and fan are turning. If this is the case then you either have an extremely bad air leak between the air pump & nozzle, a restricted fuel line or vacuum leak, or the rotor in the pump itself is broken and needs to be replaced.

Check the pump pressure. If 0psi then the rotor is broken.
If there is "some" pressure, then look elsewhere.

Nov 22, 2010 | Reddy Heating & Cooling

1 Answer

No fuel spray, it sprays if i pressurise the fuel tank.


Follow this link. It sounds as if the rotor (air pump) is broken and needs to be replaced. Replace the rotor, then set the pump pressure with a low pressure gauge..
How to replace a rotor

How to set the pump pressure

Good luck!

Oct 18, 2010 | All-Pro Kerosene Garage Shop Heaters - All...

1 Answer

How do I adjust the rotor to the pump on a Master B 150.


Before setting the gap make sure the motor does not have any motion in the shaft indicating a worn bearing. If so, the motor must be replaced.

The rotor is surrounded by a metal ring called the pump body, which has 2 screws that attaches it ti the motor. Loosen the screws. This will allow a slight up/down movement of the pump body. Install the rotor. Adjust the rotor so that on the top side of the rotor there is .003 to .005 clearance then tighten the screws.

Then set the pump pressure. Watch this video with instructions.

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1 Answer

I can't get my reddy heater to light. No fuel


If there is NO fuel then the pump rotor is probably broken. http://www.reddyparts.com/rotor%20replacement.htm


If there is SOME fuel then set the air pump pressure. http://www.reddyparts.com/pressure.htm

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1 Answer

Fan motor will not spin but when I take off the part where you adjust the air pressure the fan will spin freely


Once the plastic end cover is removed, remove the lint filter to expose the air pump rotor. You will probably find that it is shattered & is binding. Measure the thickness of the rotor & replace, then set the pump pressure. These rotors are real scarce now, so don't wait too long.

Jan 28, 2009 | Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer

Keeps brackeing the carbone disk that runs the fuel pump


Are you setting the gap between the rotor and the pump body? .003-.005 each time
If the answer is yes, then check the shaft of the motor. Up & down movement of the shaft indicates a bad bearing and the movement will kill the gap that has been set and cause breakage of the rotor!
How to properly replace a rotor

Jan 08, 2009 | Master Heaters Master B115DT 115,000BTU...

2 Answers

I have a reddy heater model R70 that wont ignite.


I have the same problem. What is the matter with it? It seems like it will not pump fuel.

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