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Outdoor fan running very slow - Heating & Cooling

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May need a new Motor. If it has a run capacitor check it to see if it is close to the name stamp on capacitor mfd. Replace if weak. Also check voltage to see if you are getting the correct Voltage. You should be getting either 208 or 230 volts

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician or HVAC tech to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.


Posted on Mar 15, 2011

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Sure sign of a fail capacitor. outdoor fan running very slow - themobilian_1875.jpgthemobilian_1876.jpg

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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1 Answer

What to do with carrier infinity ac fault code 81


"Low capacity thermal lockout"#81. What this tells me is your 1st stage cooling(low capacity) is locked out for 4 he's due to a dirty outdoor coil, weak outdoor fan motor run capacitor, slow outdoor fan motor, overcharged with freon, restricted or short cycling outdoor airflow(overheating), damaged discharge temp switch, faulty outdoor circuit board. That's all the scenarios I can think of for now. Hope this helps!

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Haam air conditioning split then I switch on come to E7 what is the problem in my a c please give me answer any parson


Malfunction of Outdoor Unit Fan Motor ( E7)
Remote Controller
Display
E7 Method of
Malfunction
Detection
Abnormality of fan motor system is detected according to the fan speed detected by hall IC when the
fan motor runs.
Malfunction
Decision
Conditions
?? When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor
running conditions are met

?? When connector detecting fan speed is disconnected
?? When malfunction is generated 4 times, the system shuts down.
Supposed Causes ?? Malfunction of fan motor
?? The harness connector between fan motor and PC board is left in disconnected, or faulty connector
?? Fan does not run due to foreign matters tangled
?? Clearing condition: Operate for 5 minutes (normal)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.

Replace the outdoor unit fan motor.
Connect the connector.
Remove the foreign matter.
YES
NO
Are fan motor
connectors
disconnected?
Replace the outdoor unit fan motor.
NO
YES
Is the pulse input?
Check No. 11 Check for pulse input
for number of rotations
on the outdoor unit
PC board.
Replace the outdoor unit PC board.
YES
NO
NO
YES
Is there
any foreign matter
around the fan?
Can the fan be
easily rotated by hand?
(S2584

Jun 07, 2016 | Heating & Cooling

1 Answer

Coolant fan doesn't come on unless I run air conditioner.


"Coolant Fan" is not necessarily a common term used to refer to any particular fan in a standard HVAC system. Are you referring to the "Indoor Fan" that circulates the air within the living space???? OR are you referring to the "Outdoor Fan" or "Condensor Fan" that circulates the air across the outdoor coil ??

If its the indoor fan on an air handler that's not running unless its in A/C mode, it will be a faulty heating circuit fan relay on the main control board.

If its the outdoor fan and its a heat pump system the outdoor fan stops during the defrost mode so there is a slight possibility the system defrost board is faulty and stuck in defrost.

A little more information may help obtain a more specific answer.

Apr 14, 2015 | Heating & Cooling

1 Answer

How to troubleshoot thermostat wiring?


I'm not sure if the thermostat is wired correctly. First, the thermostat is wired directly to the outdoor unit (compressor/condenser unit). It is NOT directly connected to the indoor unit. It connects to a low voltage control panel in the outdoor unit that sends a signal to your indoor fan/evaporator. This wire is called the fan relay switch and physically runs between the low voltage controls of the indoor and outdoor units. If the fan relay is bad it's possible that the unit runs continuously. To prevent destroying your outdoor unit there is a safety feature that prevents the indoor fan from shutting down while the outdoor unit is running. If the indoor fan did shut down while the outdoor unit was running than you would slug your compressor. That is, your compressor normally sees refrigerant gas but is instead seeing refrigerant liquid. That would not be good since this scenario would destroy your compressor. It sounds like a faulty fan relay. The actual contactor portion of the relay is in the outdoor unit.

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1 Answer

Indoor fan slow to rotate in heat mode and no heat/compressor


The indoor fan will not run at normal fan speed untill the indoor coil reaches 32oC. This is done so that a cold draught is not felt when outdoor unit is not running. Check to make sure the outdoor unit is operating. If the outdoor fan is running but there is no indoor fan after 5 mins then you must likely have a gas issue or a fault compressor circuit.

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1 Answer

Fujitsu Outdoor Unit AOT90TP has error code E:OE = Outdoor High Pressure abnormal. Heating will not work, any ideas on what needs to be done to fix/what problem is?


Hi, and yes, when you have a high head pressure, either the outdoor fan is not running or the coil around the unit is very dirty and can not give off heat. To fix this if the fan motor is up and running like it should, shut off power to the outdoor unit. Take your water hose and start washing out the coil around the unit to remove all of the dirt. Be carful not to use to much pressure as you will flatten the aluminum fins on the unit. Turn the power back on and you should be back in service. Now if the motor is slow, dragging and not up to a good speed and moving a lot of air out of the top, then I would have the condenser fan motor replaced. Foe a tech to come out and change it, you are looking at around $150.00 dollars. I hope this has been of help to you.
Sincerely,
Shastalaker7

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1 Answer

The fan on outdoor unit sometimes starts normally, sometimes starts slowly and will get up to speed with a push or sometimes will not start at all. Loud hum when slow or stopped. Cools normally when it...


SOME MODELS HAVE A TEMPERATURE DEVICE THAT CONTROLS THE FAN WHEN REAL HOT IT WILL CONTROL THE SPEED OF THE FAN WHEN COOL OUT THE FAN WILL VERY FROM FAST TO SLOW DEPANDS ON THE HEAT BEING PUT OUT BY THE OUT SIDE UNIT IF THIS PROBLEM OCCURES DURING BOTH HOT AND COOL NIGHTS THE FAN MAY BE GOING BAD

Aug 22, 2009 | Heating & Cooling

1 Answer

Outdoor unit fan making noise when running sounds


Bearing in fan going out. Let it run till it quits or call service tech to change motor. Fix cost about 250 to 300 dollars. russ

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1 Answer

Airconditioner LG LSk181-N2 shutting off


Sounds like your aircon is stuck on heating mode. Or. The outdoor fan speed is affected by ambient temperature, or low refrigerant. In heating mode the indoor fan will come on for a while to sense temperature and will then wait for the outdoor unit to pump up pressure and build up heat.

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