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Why does my fan and heat words keep flashing and the heat is not turning on?

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When the blower motor fails to start: To protect the system, the heat is prevented from starting and the lights flash a warning

Posted on Nov 10, 2014


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How do I get the heat to come on if the words fan and heat are flashing?

The heat is set to on but the blower fails to start. To protect the unit the heat will not run without the blower. The start capacitor for the blower is the most likely failure.

Nov 07, 2014 | Lux Thermostats CAG1500 Digital...

1 Answer

Pentair master temp 400 not turning fan on. resets and then flashes r-8. AFS led keeps coming on replaced blower still same problem?

so the problem is air vac switch need to closed before the fan star running is 24vac power them we need to move to ignition control muddle (IID) CHECK f-1 and f-2 for 120vac going to fan , make sure the heater is calling for heat , good look and take you time,

Jun 11, 2013 | Pool & Spa

1 Answer

Hitachi p50h401 the power light keeps flashing

If you have a flashing red light, try this first: The flashing red light is, according to the Hitachi service manual, an indication of exactly one problem. It is that the fan (internal, blows air over the power supply heat sinks) has failed. In my case, it failed by continuing to spin (very confusing), but put out a signal (3V on the white wire of the fan harness) that it has failed (I had to look up the data sheet on the fan to figure this out). A new fan from Arrow $10 fixed the problem. If you suspect your fan, spinning or not, you can safely short the white to the black wire to see if your TV remains on after being turned on (solid red light), and then try turning your TV on (blue light) to see if it works.

Oct 17, 2011 | Hitachi P50H401 50 in. Plasma HDTV

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Hi, i have an acer aspire 5720z laptop. When i turn it on it loads up and within about 10 minutes in turns off on its own. When i try and charge it the power button keeps flashing orange/yellow. Can you...

When the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail.
A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith dust.
Check the CPU fan to see if it spins freely, if not replace the fan.
If the fan and heat sink is clogged with dust the remove the dust and make surethe vents are clear and dust free. Use a can of compressed air to do this.

Apr 22, 2011 | Acer Aspire 5720-6661 Notebook PC

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I have a goodman furnace inducer blower motor and blower fan turn on at same time led is blinking 4 flash.

Hi, this is not right for sure. On the panel of the furnace, glued to it or some other area inside, you will have a list of codes and the amount of flashes the led is flashing that will tell you what is taking place. They are all different, so 4 flashes will say something about the inducer motor I am sure.Find the code for 4 flashes and it will tell you what is going on. It may be a fan relay sticking, or a flame roll out switch has tripped causing the fan to come on and run, this happens for safety. Please keep me posted on what you find in the comment box to me, and we can go from there if you haven't already fixed the problem. Make sure you stat is set for the fan to be in the auto setting, I am sure you know this. Please keep me posted on this.Please rate me on my help to you on this, thank you.
A/C, & Heating Contractor

Feb 20, 2011 | Heating & Cooling

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Thermador oven will not self clean.The blower fan does not turn on, and the word HEAT never appears when LOCK stops blinking. In other words, after following steps 1,2 and 3 fan and heat never happens.


Before you go working too hard to get you oven to go into the self clean mode(self destruct)....check out this tip...

Self Cleaning Oven Problem


" Wish I had read this first. I never would have used the self cleaning option. Thanks for the info!!

Dec 23, 2010 | Thermador Ovens

1 Answer

Why does my Sony 57" Hi-Scan 1080i? 16:9 Projection Television keep turning itself off. I turn it on and after 10 min it shuts itself off I can turn it back on but the longer it is on the quicker it shuts...

Sounds like a heat problem. Check to make sure that if it has a internal fan that it is working, and clean any dust build up, most projection tv's have fans, usually the number of flashes indicate a code that repeats.

Mar 16, 2010 | Sony KV-28FX60 28" TV

1 Answer

"cool on " heat or cool air blowing

when its flashing its in a 5 min delay mode if you wait 5 min and still flashing you may need a new stat. but give it a full 5 min.

Sep 20, 2009 | Heating & Cooling

1 Answer

Can someone tell me why my AC won't turn on and why the fan will not come on in ''on'' position when I have set temp low and moved fan setting to ''on'' the ''fan'' word on the unit just keeps flashing....

is this on a car and if yes... what type of car. there is a relay behind the glove box on honda's that you can replace that causes that to happen. I had a 96 civic EX and that was the problem.... the next solution would be to change the fan motor.

Aug 15, 2009 | Heating & Cooling

1 Answer

Error code of 6 flashing light on circuit board,

There appears to be a short in the unit. Not sure where. The power to the fan is not interrupted completly when the fan shuts down, still feeding voltage to the fan, keeping it running slow. Before checking the wiring, please turn off power first.

Nov 19, 2008 | Heating & Cooling

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