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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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1 Answer

I am new to a heat pump. The thermostat has an 'auto' setting and an 'on' setting. I am confused as to which one to use for heat. Can you help me?


n most heat pump thermostats you have two control switches and the temp setting. One control switch will say "Heat", "Off", "Cool" while the other says "On" and "Auto". The three position switch is for whether you are heating or cooling. The two position switch is for the fan control. "On" will make the fan run constantly whenever the three position switch is in HEAT or COOL mode. Some people use this to circulate air at all times. MOST people use the AUTO mode, where the fan is controlled by the circuitry and runs during the times of heating and cooling only.

Oct 16, 2015 | Air Conditioners

1 Answer

What would cause the fan not to come on in heat mode


Does the fan come on in cooling? If yes your heating and cooling use different speeds. It could be the low speed on your motor is out which means you need to replace it. Or it could be a problem with the control board. If the fan doesnt come on in neither heating or cooling it could be the capacitor or your motor.

Mar 07, 2015 | Air Conditioners

1 Answer

How do i stop the supply fan


Check fan switch, if in On position fan runs continous Auto position, fan cycles with heat /cool. If in Auto than fan relay,logic board failure or short in wiring.

Oct 16, 2014 | Air Conditioners

1 Answer

LG air conditioner the fan comes on when in heat mode but when switched to cool the fan stops


They run on different speeds for heat and cool you either lost a speed for cool or the relay for the cool mode is not closing, Does the compressor come on in cool mode?

Sep 05, 2014 | LG Air Conditioners

1 Answer

What is a E4 code mean


Error Code:
E1 Loss of communication between the Single Zone LCD thermostat and the mod-ule board. LCD will cycle between E1 and the previous mode setting. System
will shut down.
E2 Open circuit or out of range Indoor Temperature Sensor. Heating and cooling
operation will be locked out. Fan operation can continue to operate.
E3 Shorted Indoor Temperature Sensor. Heating and cooling operation will be
locked out. Fan operation can continue to operate.
E4 Open circuit or out of range Outdoor Temperature Sensor (select models). Heat
Pump operation will be locked out. Air Conditioner, Fan and Furnace operation
can continue to operate.
E5 Open circuit or out of range Freeze Sensor. Air conditioner mode of operation
will be locked out. Furnace, heat strip, heat pump and fan mode of operation can
continue to operate but displays the last temperature set-poi

Dec 18, 2012 | Dometic 3313192.000 White Single Zone LCD...

1 Answer

Which symbol on remote is cooling? I dont have a manual but is on the wall, symbols are a fan on the bottom LH, an a sun on top LH I think? Are you able to help me with modes to select please?


Symbols:
1. fan leaves - Fan only
2. Rain drop- Dry mode
3. Snow flake-Cool mode
4. Sun- Heat
5. A or AU- Auto mode.
L-means fan speed low
M-means fan speed of med H-means fan speed of high.
To get proper cool, mode "cool" and less 3 degree minimum than your room temp.
To get proper Heat mode "Heat" and 3 degree more than room temp. Hope, helpful

Jan 30, 2011 | Sanyo Air Conditioners

1 Answer

Our window AC/heat unit fan only buzzes when turned on- no matter whether you turn on fan only or heat or cool mode.


so the fan does not spin and blow air? it could be a stick broken fan try free spinning it make sure its turned of. if fan spins freely its probably your start capacitor which is not to expensive.

Nov 10, 2010 | LG Heat cool Window Air Conditioner

1 Answer

Outside ac unit operates but no blower. Fan "on" does not operate from thermostat. However "heat" works fine furnace and blower. ???


Go to furnace and shut off power, remove blower door compartment. Inside you will find a control board where thermostat wires are connected. Should look something like this:

R-Red Wire= Power
G-Green Wire= Fan
W-White Wire=Heat
Y=Yellow or Blue Wire=Cooling.

It sounds like you have a bad motor speed. So try this:

With Power Still Off, on the same control board there is a terminal usually marked Cool and Heat. There should also be a couple of terminals that are named park. The wires hooked to these are the fan wires..

Exchange the Heat and Cool wires on the terminal board. Put everything back together and try cooling again, if the fan comes on
then you have a burnt out motor speed. Go back to furnace and change
the heat and cool wires around, next if Cooling had the black wire hooked to it, put yellow or blue on Cooling and black to park.


Note: The reason why you put the blower door back on is because it
has a door switch that if not properly seated, you wont be able to power
up anything

Jun 22, 2010 | Air Conditioners

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 | Air Conditioners

2 Answers

Fan slows to about half speed when heat cycle kicks in


The heat fan speed is slower than the cooling speed. About 300 rpm less.
You may not have a problem.

May 20, 2009 | LG Air Conditioners

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