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Reznor heater. fan cycles on and off. replaced fan cotrol and still cycles to often but not as bad.

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I have a reznor ra235 and during cool down the burner motor and fan this right?

I don't know what you mean by burner motor ... the turbo?

When you park your car and switch off the engine the cooling fan may start .. This is normal. Hot water in the engine rises and causes the cooling fan to start. You have nothing to worry about.

Some vehicles - the turbo will continue to run after the engine is switched off. This is to allow the turbo to cool and not overheat/destroy the oil inside it.

Jan 19, 2016 | Cars & Trucks

1 Answer

2006 GMC 1 ton heater fan not working

To look up wiring I need more info, What is the model? Is it a 2500 or 3500, what is engine size?
Check the blower motor wiring connector for voltage and ground with hvac on.
Can you check for hvac trouble codes? Some of the national brand auto stores will check some codes for free.

Dec 03, 2015 | GMC Cars & Trucks

1 Answer

Why is my heater blowing cold

Most likely it is the heater control valve that shifts air from blowing across your heater core to your air conditioner core.

If your fan works and your car is fairly new..meaning your heater core isn't dirty and full of craap...then it is the climate cotrol valve.
If you are lucky, it might be a thermostat that is bad and blocking hot water from entering your heater core. Bottom line, if hot water doesn't circulate thru that little heater core, you won't get heat.
You might be able to look under the hood and grab the hot water lines that go thru the firewall and feed your heater core. If they feel cold to the touch after engine has warmed up, then you aren't getting circulating water to the heater core. If they feel nice and warm, then the heater core is fine, but your climate control valve has closed off the fan that blows across the core to disperse heat into the cabin

Feb 24, 2015 | Cars & Trucks

1 Answer

How do I get to heater cotrol switch. Both the temperature, fan speed and selection of vents has stopped working

A haynes manual from your local auto parts store or autozone website has a parts locator section.

Jan 26, 2015 | Cars & Trucks

2 Answers

My heater will only blow out warm air for about 2 minutes. The coolant temperature rates to -35F, and I replaced the thermostat. The radiator is topped off with fluid.

it is possible that your cotroller is going bad try playing with the hot and cold lever i mean push while you move it from hot to cold if it affects your temp then replace the controler if not look for the actuator that opens and coses the passages for hot and cold door under the dash

Dec 03, 2009 | 1998 Plymouth Voyager

1 Answer

2000 grand marquis air/heater fan internmitent. Check electric, but it all good. It works most the time, but sometimes quits for a day or two and then starts up again.

Sounds like you need to replace blower motor speed cotroller, located underhood right rear of engine on A/C / Heater case on firewall, rectangular in shape. When fan stops working tap on controller, fan should come back on then you will know that is problem. Have seen this many times on this vehicle. Hope this helps, have a good one!

Jul 26, 2009 | 1986 Mercury Marquis

1 Answer

Heater fan cotrol;

Could be a fuse..but more than likely you need to replace the blower motor

Jan 14, 2009 | 1998 Ford Escort

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