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No heat have fan cooling but no heat

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This sounds like a Blend Door problem. The problem is that the blend door in the plenum is stuck in the A/C position and will not reposition to allow heat. 
There are two possible issues. 

1: The Acuator has snapped off (plastic breaks) 

2: The Blend Door is broken (plastic hinge broke) 

There are related articles to fix both of these conditions

Posted on Dec 04, 2008

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

What is difference between on an auto on thermostate


I'm not sure exactly how this applies specifically in a car, but on a home heating and cooling (air conditioning) thermostat, it is often associated with the fan or blower setting.

If for a system fan:

"Auto On" setting in a heating / cooling system would start the fan when the temperature climbed above or dropped below the setting you on the thermostat and start the heat or cooling source. Once the thermometer indicates the desired temperature had been reached, the heating / cooling source would be stopped and the fan would turn off.

"On" would run the fan all the time, regardless if the thermostat tired to start the heat or cooling source. This would result in constant circulation of the air in the space(s) and tend to keep warm or cool spots (rooms) from being created.
25986675-yg02wefbryhylvrzhsbt44nn-2-0.jpg

Nov 30, 2015 | Cars & Trucks

1 Answer

Ir400 fan numbers


II. FANS
A. Arrangement and Functions
Feeder fan
Fixing assembly heat discharge
fan 1***
Fixing assembly heat discharge
fan 2 ***
Laser driver cooling fan
Laser scanner motor cooling fan 1
Laser scanner motor cooling fan 2
Cleaner heat discharge fan
System cooling fan
Reversing guide cooling fan
Low-voltage power cooling fan 1
Low-voltage power cooling fan 2
Reader cooling fan 1
Reader cooling fan 2
Drum cartridge cooling fan 1
Drum cartridge cooling fan 2
Drum cartridge cooling fan 3
DC controller PCB cooling fan
Scanner motor cooling fan
Function
Draws copy paper to the feeding
belt. Helps feeding.
Discharges heat from around the
fixing assembly.
Cools the laser driver PCB.
Cools the laser scanner motor.
• Cools the laser scanner motor.
• Insulates the drum cartridge
against heat from the fixing
assembly.
• Discharges heat from the
drum cleaning assembly and
fixing assembly.
• Discharges heat from the DC
controller PCB.
Discharges heat from the
composite power supply and the
DC controller PCB.
Prevents curling of paper.
Discharges heat from the lowvoltage
power supply.
Cools the reader (image processor
PCB, laser driver PCB).
Cools the drum cartridge.
Cools the DC controller PCB.
Cools the scanner motor.

Aug 28, 2012 | Canon imageRUNNER 400S Copier

1 Answer

I have 7 wires, how do I wire it Red Green White Black Yellow Orange Blue


Conventional heating, air conditioning and heat pump thermostat wiring labels, wire color codes and the corresponding function description: Terminal
Designation
Wire
Color
Function
Description
Rh Red 24 Volt Hot for Heating Rc Red 24 Volt Hot for Cooling Y1 Yellow First Stage Cooling Y2 Blue Second Stage Cooling G Green
Grey * Energizes Indoor Fan W1 White Energizes First Stage Heat W2 Black Energizes Second Stage Heat O Orange Heat Pump
Reversing Valve
Energized In Cooling B Brown Heat Pump
Reversing Valve
Energized In Heating C Brown** 24 Volt Neutral
(Common) leg

Hope this helps
Tom Miller
Broadcast Eng

Sep 07, 2011 | Hunter Fan Company 5/1/1 Programmable...

2 Answers

Heats up quickly and fan is very loud


When the CPU in the computer or laptopoverheats then it will shut down (i.e. thermal overload) and won't boot upagain until it has cooled down. If this is the problem is not fixed then theCPU will eventually fail.
A faulty fan causes this 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 withdust the remove the dust and make sure the vents are clear and dust free. Use acan of compressed air to do this.

Aug 20, 2011 | ASUS CPU Heatsink & Fan, Cooling Fan

1 Answer

COOLING FAN WILL NOT COME ON CAR OVER HEATS


I would check that the fan is good. Check the multi-relay under the black plastic cover over the radiator, also I'd check the cooling fan switch.

May 10, 2010 | 1992 Ford Taurus

1 Answer

This is a heating and cooling through the wall heat pump. It works normally when heating is selected - the heat pump runs and both speeds of the fan blow warm air. But nothing runs when cooling is...


You have a bad board or bad switch. I would say board. You can have service tech check this out. There is only so far you can go without knowledge of Controls ad electricity. Russ

Jul 21, 2009 | Heating & Cooling

4 Answers

Canon ir 400 photocopier


i have ir400 in my machine. first e805 code has been displayed and after that it shows that to load paper. then after e803 code is displayed. please help

Jun 03, 2009 | Canon imageRUNNER 400S Copier

1 Answer

Over heat cooling fan load noise remove and replace


A bearing more than likely has went bad causing your fan to stop properly cooling your unit. Replace with a compatible fan and you should be all set. Hope this helps.

Jun 03, 2009 | Sony Computers & Internet

1 Answer

Laptop switched off while i was working on it


After the notebook shuts down do not turn it back on for 15 minutes and then test it again. Will the notebook work longer if you let it cool down for a while? Isn’t it hot if you touch the bottom? Can you hear the fan running?
Most likely you experience a laptop overheating problem and it would be fixed by cleaning the cooling module – the heat sink and the fan. The notebook processor produces a lot of heat when the notebook is turned on. The cooling module helps to keep the CPU cool when the laptop is working. The cooling module includes two parts: the heat sink and the cooling fan. The heat sink is attached to the CPU and helps to conduct the heat from the processor to the radiator. The cooling fan blows on the radiator and helps to disperse the heat produced by the CPU. The laptop will overheat if the heat sink radiator is clogged with lint and dust or if the cooling fan stopped spinning.
If your laptop shuts down after some time without any reason and warning, check if the cooling fan spins. Usually it makes some noise and you can hear it. If the fan works fine, then check if the heatsink is clogged. In some cases you can clean the heat sink with compressed air, just blow inside the fan openings on the laptop bottom. If the heatsink is completely clogged, then it is necessary to remove the heatsink for cleaning.

Hope This Helps!!!  Please Don't Forget to Rate my Response!!! Thanks!!!  uva

Mar 25, 2009 | Gateway 830GM PC Desktop

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