Question about Heating & Cooling

1 Answer

Janitrol heater won't fire up - Heating & Cooling

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.

  • Contributor
  • 4 Answers

Bad ignighter? have you swapped that out just for process of

Posted on Jan 02, 2013


1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Janitrol aircraft heater will not light

Janitrol heaters can be dangerous things and you should only mess with them if you know what you are doing. Since you have asked the question here, I might assume you don't know what you are doing and as such I would advise you to take it to a qualified technician. There was a case of a Janitrol heater exploding in flight, blowing the nose off a piper Aztec. Luckily for the pilot, the good old Aztec has a tubular metal frame at the front, which supports all the necessary structure including the nose landing gear. He was able to fly the aircraft and land safely, although it was a bit cold and draughty.
The Heater has a built in logic sequence. If any parameter fails it will not start. First it needs combustion pressure which is supplied by the fan. Then it will check the overheat switch and if it is cold enough it will start the ignitor. If all the ducks are in a row it will finally allow the fuel to be injected, but if the fuel pressure is not sufficient the fuel solenoid will not open. If the fuel is injected with no spark, any subsequent spark will blow it up. That is why you don't mess with it. Testing different items out of sequence can cause the item to stop or start at the wrong time. If at any time the start sequence is interrupted, the whole start sequence will start again from the beginning after at least one minute of purging air has been pumped through the unit by the blower fan. If the fan is tired or the airflow has been restricted or too much fuel is injected, the unit will overheat and will automatically switch off the fuel. The fan should continue to run, but generally a manual reset is required to alert the operator that an overheat condition existed and may still exist.

Hope this helps.
Rgs. Bob


Jan 03, 2014 | Other 15D73, Janitrol Aircraft Heater...

2 Answers


you must see the schematic diagram, and see what amp, and voltage is.
If you have doub get customer support from

God bless you

May 09, 2012 | Goodman GMS90703BXA Heater

1 Answer

I hooked up a coleman electric furnace to a janitrol condenser heat pump . The t-stat wires on electric furnace are red white green and yellow. I added a blue for common off of transformer for digital...

Hi, first of all you need to get a hand full of 5 amp auto type fuses and install one on the hot leg of the 24 volt secondary side of the transformer. Just use 2 female crimp on connectors and put the fuse in the middle of the hot wire. Saves $$$$ on replacing transformers when you have a dead short on the low or high voltage side of any transformer, just a trick of the trade, food for thought. Fuses are much cheaper. On your electric unit, you may not need the common on this to operate the digital stat if it has batteries. This may be your dead short. On the Janitrol condenser, the red is your 24v as you no. They are using blue in place of yellow for cooling. Red is hot, W is heat, G for fan, and blue is cooling on this Janitrol. Keep in mind you are connecting to a heat-pump also, so make sure the wiring is correct. Are you installing this for secondary Heat?? More then likely, the blue common you have added is the dead short as the janitrol uses the blue for a cooling relay in place of yellow. Anyway, use the 5 amp fuse, trick of the trade to save on the transformers. Please keep me posted, as I know know you have this under control.
A/C, Heating, & Refrigeration Contractor. Good Luck!

Feb 09, 2011 | Coleman Heating & Cooling

1 Answer


First, replace the limit. What causes a furnace to cycle frequently would be either a malfunctioning thermostat, a shorted thermostat wire, a bad control or the thermostats heat anticipator is not set right.

Jan 30, 2010 | Heating & Cooling

1 Answer

Janitrol GMP050-3 rev. B led 2 blinks

board replacement - cleaning the venturi tube that applys vacumn to the pressure switch - and a new pressure swtch. Works properly now!

Jan 05, 2010 | Goodman GMS90703BXA Heater

1 Answer

Furnace will not keep the gas burning.

May be your flame sensor on the right hand side of the burner assembly. You will need a 1/4 inch nut driver to remove it and then take a brass brush and clean off the sensor

Dec 15, 2009 | Heating & Cooling

1 Answer

I have outside Goodman-Janitrol furnace and air unit and

two things to try first to get you pointed in the right direction. First disconnect the R or RH wire from the T-Stat. If the furnace turns off (Stops firing w/ fan to turn offabout 90 sec. later) then you more than likely have a bad Thermistat. If it continues to run Pull the R wire from the Furnace circuit board. put door back on furnace if it stops you have a short in the wire. Still Running? Most likely a bad curcuit board. Hope this helps.

Oct 12, 2009 | Goodman GMS90703BXA Heater

1 Answer

Janitrol gup power vent ignition sequence

inducer motor should run for several seconds before furnace lights, this proves the pressure switch and ensures proper ventilation

Sep 30, 2009 | Goodman Heating & Cooling

1 Answer

How to do the tune up of B4833000 Janitrol Goodman Draft Inducer

You don't tune up draft inducers. If the inducer is bad it should be replaced.

Jan 03, 2009 | Goodman GMS90703BXA Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

35 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

2598 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides