Question about Coleman (5040B750) Patio Heater

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Heater lights but very low flame, the tank is full, I have shut it off and have taken the hose off the tank to make sure it isn't air locked ,but it still has a low flame. How can I get a full flame so it will heat better?

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

Therinnaiguy
  • 1420 Answers

SOURCE: Coleman patio heater 5040A770

These heaters are not designed to be operated below 40 degrees F. If the heater is used below 40 and if you have a gas tank containing less than 25%, the unit will not operate for long and will start going out. If the heater all of a sudden goes out without showing any flickering or pulsations, you have a bad gas valve, there is no thermocouple on this model. Fill your tank and try the heater again. If it continues, give Coleman a call at 800-835-3278.

Posted on Nov 15, 2007

  • 92 Answers

SOURCE: Patio Heater SRPH02 will not light in cold weather

you may need someone to come in and adjust your pressure regulator that is inline to heater this is what controls the output of propane and should only be adjusted by a pro

Posted on Apr 15, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: My Home propane tank was empty, I just had it

Make sure all switches are on and open. It may take a few attempts to get gas to the burners so you may have to reset the furnace by either the Emergency switch or circuit breaker. If it takes longer than 3 tries, you may have a gas regulator problem and will need to call your gas company for repair. The regulator belongs to the gas company so they shouldn't charge you to repair or replace.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Posted on Jan 04, 2010

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  • 51 Answers

SOURCE: My 2 year old (rusted and looking like a 10 year

Heaters that have rusted are tin plated or chrome finish, it can be hard to get a stainless steel heaters since some traders sell heaters as stainless steel but don't tell you the burner is made of tin. If you get a new heater just ask the question, is the burner tin or stainless steel? The problem with a burner that goes out can be a simple as changing the thermocouple, these are consumable and last between 2 to 5 years depending on use and storage. But if you have a yellow tipping this is not good, this can be caused by wrong fuel mix or faulty gas valve and is not an easy fix. Found this site very useful patio heater problem solving. Lots of info.

Posted on Nov 09, 2011

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1 Answer

Full tank, igniter clicks, i hear the flam come on but it wont light. What to do?


I am not sure which flame you hear light. The pilot light flame or the burner flame? In any event, the burner and the pilot assembly need to be cleaned. Insects love to build nest in these types of heaters, when they're not in use. When that happens, the pilot and/or the burner get's clogged.

A shop vac with a hose and brush attachment work well in cleaning the heater parts. Canned compressed air with a straw nozzle (like you clean your computer with) does well in blowing out the pilot tip and around the entire pilot assembly.

Be sure to turn the gas tank valve OFF and disconnect the hose and remove the tank, before attempting to clean the unit. When you replace the tank and reconnect the hose, be sure to open the gas tank valve VERY, VERY SLOWLY (Slow motion slow).

Hope this helps you solve the problem. Thanks for choosing FixYa.

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2 Answers

Rheem RTG-64DVN model, brand new unit installed during the weekend. fired up but shout down automatically within about 5 seconds. showed error code 12.


contact your gas company if the error code is "12," indicating that the gas supply was interrupted.

have a good day !! In LP models, the 12 error code may also appear if the LP gas supply has gotten low. To clear the code, replace or refill the LP gas supply.

go here for a list of codes for rheem tankless water heaters-- www.ehow.com/list_7833182_error-rheem-gas-water-heater.html

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I'm not sure of the model because the heater is at my lake house, 85 miles away. With a full tank, I manually light the pilot, which lights every time. When I release the pilot button, the flame dies, thus...


You need to check the flame sensor. It's probably a thermocouple or a flame rod. Either may not be in or close enough to the pilot flame so the heater doesn't know it's burning. If it is in the flame you can clean a flame rod with some steelwool or emory cloth. You may be able to clean a thermocouple but will probably need to replace it.

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1 Answer

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

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1 Answer

Starts then shuts off


if it starts and shuts off the flame sensor is dirty. Take cover off and clean flame sensor with scotch brite. If it dosen't light at all you have an igniton problem

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Seems like the valve is not opening up fully or the adjustment is out of adjustment. Try adjusting the flame.

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Ok, either your fuel pressure is too low or too high.. When you light the unit, Light it in low, then turn it up slowly Just crack open your tank valve.about1/4 turn. The air in the tubes has to be displaced with gas before you get a good flame

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