Question about Coleman Propane Forced Air Heater w/Electronic Ignition (50,000-80,000 BTU)

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

While the thermostat is NOT calling for heat. I just replaced the thermostat with a programmable one but it did the same thing with the old thermostat. I just replaced the blower motor (was seized up probably from drywall dust) but it did not change the situation, other than fan working well now.

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

Posted on Nov 07, 2010

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Furnace Troubleshooting


On some natural or LP gas furnaces, the blower motor has to come on 1st
and then shuts off. This process starts the inital call for heat. If you find
yourself without heat and the blower does not run, turn the furnace to on
at the thermostat.

When changing the fan to on, you are changing the speed, if the heat comes on, that means you have a burnt out speed on your blower motor.

If nothing happens, change the fan speed at the control board.
In some instances they may be using the same blower speed in both the
heat and cool mode.

on Jan 19, 2010 | Heating & Cooling

Tip

Programmable Honeywell


A Programmable Honeywell Thermostat is a great investment for you to make for your heating and cooling system. A Honeywell Thermostat will provide you with the best in comfort and dependability for many years.

Many people when they think of Honeywell Thermostats think of the old round T87 thermostat that has been one of the most common thermostats for years and years.

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Today they have those thermostats in designer colors and they are still made and used in many situations. But the manual thermostat is quickly becoming a thing of the past. With the rising costs of fuel the Programmable Honeywell Thermostat is becoming more and more popular. Programmable Thermostat Honeywell is even one of the most popular searches when it comes to thermostats.

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The VisionPro thermostat line has quickly become one of the leading digital programmable thermostats on the market to today. The ease of programming this thermostat and the touch screen interface has made it a very popular choice for many people. There is a variation of this thermostat for virtually any possibility that you can think of. The FocusPro line also is a very good choice at a bit less cost. There is a basic Pro line and also even a digital thermostat in the traditional round configuration. Both digital programmable and basic digital thermostats are available for line voltage control of electric heating.

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Along with the thermostats you now are able to add remote outdoor sensors as well as install you thermostat in a remote place and run a sensor to the space you are controlling. For many years these capabilities were standard for commercial thermostats, but now they are a very real possibility for home use also. With an outdoor sensor these thermostats now have the capability to turn off your heat pump and start you backup heat a certain preset out door temperature. In the past many systems have been installed with complicated electronic to do what a thermostat can do very easily.

The Programmable Honeywell Thermostat has come a long ways in the past few years. The changes have made this thermostat capable of doing many unbelievable things. If you are looking to replace your old thermostat, carefully compare the many thermostats on the market and then pick the one that will meet your needs the best. For many the Honeywell digital thermostat will be the best choice, giving them great flexibility and reliability in one thermostat.

http://www.fixya.com/support/r3894275-manual_honeywell_find_honeywell_manuals

http://www.fixya.com/support/r3623083-thermostat_wiring_terminal_designations

on Jan 15, 2010 | Heating & Cooling

2 Answers

Have an older Coleman mobile home furnace (Mdl 8665D766). Both blower fan and booster motor work fine; however, during heating, booster motor will keep constantly running after system cycles through


The booster motor? Do you mean the inducer motor that helps push the exhaust? If the inducer motor won't shut off when the thermostat is satisfied and everything else does shut off, it sounds like the contacts on the relay that powers the inducer are at fault

Feb 03, 2018 | Coleman Heating & Cooling

1 Answer

Blower runs continously....


Hi Kathi,

I think its thermostat or ,thermo sensor is out of order and if it is controlled by electronic circuit it can be faulty.
another thing sometimes output contact relay for motor is faulty it want turn off itself when the circuit energize the coil.

please call electrician who can handle.

regards,
nuwan.

Jan 10, 2014 | Honeywell Programmable Thermostat 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

1 Answer

Intertherm furnace burner comes on, but blower does not. If I turn thermostat off then back on until it clicks the fan will then come on. It does not do this all of the time, just now and then.


Furnace burner and heat element are not the same. I think the fan time delay, a sensor that turns the fan on when this sensor senses heat, is shot and needs replacing, for a furnace type heat ( gas heat)

Aug 08, 2017 | Intertherm E3EB010H Electric Furnac

1 Answer

I have a Johnson aire ease ultra 90 gas furnance. I also have a outdoor wood furnance that has its own thermostat. On the original thermostat I turn the blower in the on position. I then set the outdoor...


I would first eliminate one furnace from the equation, the exterior wood furnace... turn its tstat down. Will the gas furnace then operate normally? Can you run the blower manually, as in summer mode? Make sure your filters are clean also... that can sometimes overload the blower.

Apr 12, 2017 | Heating & Cooling

1 Answer

I have a lennox furnace that is about 25 years old and for the last few days it doesn't want to kick on. I replaced the thermostat thinking that was the problem, but it wasn't. The problem that I'm having...


I would suggest that you have someone turn thermostat up to call for heat while you are watching. Being that old it may or may not have a induced draft motor on it. It it does the draft blower should come on first, then spark igniter,then pilot ,next the main burner,and after a short period the main blower. If you do not have induced draft motor the spark igniter should come on as soon as thermostat calls for heat. If it doesn't I would check all electrical connections making sure they are all clean and tight fitting. Just follow it through step by step . You can use volt meter to check across red and white wires from thermostat to where they hook into furnace. When you are calling for heat you should read about 24 volts. I would be inclined to replace spark igniter but if it does what it's is suppose to then I would go to gas valve. It might be worth your time to check connections on t-stat. I have occasionally seen wires that were broke under screw and some time make connection and other times not. You can also remove red and white wires from t-stat and temporairly touch them together. this should turn heater on. Hope this helps. Thanks.

Nov 14, 2010 | Heating & Cooling

1 Answer

Outside heating unit runs all the time


Usually when the furnace blower motor runs all the time
The limit switch or rollout switch is usually open or bad.
The furnace board is seeing that one of those switches is open, so it brings the blower on to try to get the heat out of the combustion chamber area, so the switch will close. But if the switch is bad and won’t close, the furnace board will keep the blower running continuously.

Feb 19, 2010 | Heating & Cooling

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