Question about Heating & Cooling

1 Answer

Burner not full force

I have and intertherm propane forced air with a single burner. when the thermostat calls for heat the exhaust blower turns on and because the pilot is always on the burner turns on also.. but the burner isnt strong enough to heat the box so the blower motor never gets the signal to turn on

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 12 Answers

Could be your gas pressure is too low. Also, there is a particular type of spider that likes to get into the gas line at the gas valve and spin a little web in there. I have often seen this as the cause of low gas pressure. If neither of these is the cause, I would suspect a faulty gas valve.

Posted on Dec 16, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Furnace goes out when blower should start


There is a sensor called a pressure switch that is attached to the area of the blower motor for the exhaust fan. It is bad or plugged.

Nov 16, 2015 | Heating & Cooling

1 Answer

Pilot and burner light then gas shut off model 7900


How many degrees before it reaches desired temp, does it shut off? A thermostat is designed to shut the furnace off a couple/ few degrees before it reaches set temp. It has what is called a heat anticipater, which shuts the burner down, and lets the blower use the remaining heat from the heat exchanger to bring it up to desired temp making it more efficient. If it is more than a few degrees, replace the thermostat. You can jump out the red and white wires to confirm the faulty thermostat. If by doing this, the furnace never shuts down, until you separate the red and white wires. That confirms a faulty thermostat. Hope this helps someone.

Oct 06, 2014 | Coleman Propane Forced Air Heater...

1 Answer

When i turn the heat up sometimes it takes a long time for the gas furnace to start ..why?


Watch your furnace when you turn the thermostat up...make sure to record everything that it is doing. If you have an induced draft, forced air system, then the heat sequence of order should go like this... Initial call for heat from tstat, Inducer vent motor turns on-pulls in the pressure switch, circuit board sends power to igniter whether it is spark or hot surface, then gas valve opens. Flame sensor senses flame, burner stays on, and blower motor kicks in to heat the space. If you notice any variance from this, then something needs to be checked by an HVAC Service Tech.

Dec 14, 2013 | Honeywell Programmable Thermostat Heater

2 Answers

3500 propane forced air reddy heater not putting out much heat since I changed bottles


tank is being turned on to fast and the safety valve will close and not let the full pressure go to the burner same with any new tank that has the columbine valve in it pressure sensitive

Mar 25, 2013 | Reddy Heater-30,000 BTU Propane Forced-Air...

1 Answer

We have a coleman electronic ignite propane furnace for a mobile home it is not even 3 winters old. Regulator just replaced, tenant ran out of gas. We turned off the power and reset the computer-the...


This furnace should have a diagnostic light that will give you a starting point where to look. It is located on the control board and will blink a code. If you remove the panel with the door switch on it, you will erase the code. Look for a small viewing port that looks on to the circuit board. Once you get the code, look on the wiring diagram for a explaination of the codes.

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).

Jan 24, 2010 | Coleman Propane Forced Air Heater...

1 Answer

Hi~ i have a coleman-evcon heater in a mobile. The heater comes on when the thermosat is turned up to, say 65 from 55, then before the air blown out is even really warm, it shuts off. it runs on propane,...


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).

Jan 13, 2010 | Coleman Propane Forced Air Heater...

2 Answers

My Home propane tank was empty, I just had it filled, but when I go to turn on the heat, a flame icon comes up. I noticed on the heater it has an on/off switch for the automatic pilot light. I am not sure...


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).

Jan 04, 2010 | Coleman Propane Forced Air Heater...

1 Answer

My heater will not light. It is eletric ignition, there is power coming into the unit.


In order for the furnace to light, a few things must happen. The thermostat must have a call for heat thus making a connection (closing a switch) sending a signal to a computer circuit board. The board will in turn blink a light indicating a call for heat is registered. It will then send power to a fan motor that will remove old air from the burner area and introduce fresh air to the burner. Once the blower comes up to speed, the pressure closes a a pressure switch. Once the switch closes, it sends power to an igniter, either a glow type or spark type. It also sends power to one side of the gas valve to open up the pilot gas valve and send gas to the pilot assembly. Once the computer senses there is heat at the pilot valve, it will open up the second gas valve and send gas to the main burner. The trick is to know where it is going wrong. First you must watch this sequence to follow the workings. To do this you may have to remove some panels on the furnace and hold a door switch closed temporarily to trick the furnace to run. Follow the sequence above to find where it ain't happening and look at what must be done to fix it. It could be as simple as a bad thermostat (no call for heat) or a plugged exhaust vent not allowing the pressure switch to close. Let us know how you make out with the diagnosis!

Oct 13, 2009 | Coleman Propane Forced Air Heater...

1 Answer

Furnace blower motor turns on and off all the time...


blower will not shut off. will only shut off by turning off circuit breaker. changed thermostat. no help. what should i check?

Dec 20, 2008 | Coleman Propane Forced Air Heater...

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

Related Topics:

63 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2112 Answers

Dan Webster
Dan Webster

Level 3 Expert

8205 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

Loading...