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Outdoor lennox elite ac unit not turning on

Circuit breaker chkd, it is on position, indoor register working. there is a grey box near outside unit with a black on/off handle but cant move it. how can i troubleshoot to get outside on. thermostat on inside as well

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  • 373 Answers

Remove the service cover on unit.check and see it the contactor is pulled in if it is then check the disconnect that is the gray box that you see on the wall to see if you are getting 220 volts to it and through it to the unit. if indoor unit is running and outdoor contactor is not pulled in check the 24 volt side of contactor. You will need a metter for this if you are not confident with working with electricity call a service company. electricity KILLS

Posted on Jul 02, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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22yooper
  • 828 Answers

SOURCE: Goodman CK60-1C model central AC unit blwing hot air

Clicking sound is the contactor engaging to start the outside unit. Check for a burnt off wire at the contactor. For some reason you are not getting power to the outside unit. If you find a burnt off wire shut off all power to it then remake the connection at the point of the circuit break.

Posted on Jun 27, 2008

  • 1 Answer

SOURCE: AC unit runs inside but not outside! help

check your thermostat is it set on cooling, check your pressure switch it might be triped due to blocked condenser.

Posted on Jun 30, 2009

co7196
  • 3433 Answers

SOURCE: Goodman Air (outside unit)

was there any refrigerant loss? "bumping" that results in movng usualy causes a leak.If the system is totally empty, It shouldn't start.. If it did major oh nos! will appear. Does it not start all? and was it running when it got thumped? May have to call a tech out on it. Sorry.

Posted on Jul 29, 2009

  • 415 Answers

SOURCE: I purchased a 60-Amp Cutler-Hammer Fusible Pullout

The two wires coming from the breaker box go to the terminals marked "LINE". The two wires going to your AC unit go to the terminals marked "LOAD".

Hope you find this to be very helpful. :-)

Posted on Mar 22, 2010

  • 3074 Answers

SOURCE: AC compressor wiil not turn on

You will have to find the contactor which is located in the outside unit. And check the voltage at the contactor, 26 v as this is the thermostat calling for the compressor to come on. You can also push in the contactor and see if the fan and compressor start. There should be an outside fuse box close to your condensing unit. Good luck

Posted on Jul 23, 2010

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1 Answer

Daikin split system air con dead


Split system Air conditioners are very often on two or more separate breakers, with a control voltage (24vac commonly) connecting their operation. the condensor unit and out-door fan generally on a 220 vc 'paired' breaker, possibly a quick disconnect near the unit with fuses inside, or an independant breaker pair, and the evaporator unit with INDOOR fan on a 110 or 220 vac breaker.

switch the fan to 'ON' at the thermostat... this is the midpoint of the system electrically. If the fan comes on check for voltage at the condensor unit. a check to see if the thermostat is the problem... remove the thermostat and connect the red, green and either the white or yellow wires (not both) if you chose white you should have heat...yellow AC...

most split system AC have a small buss fuse on the control circuit board of the indoor unit. looks like a glass tube with metal caps held by metal clips. In 40+ yrs experience I have found it is more likely one or both of the 30 amp buss fuses near the outdoor unit (replace both even if one is still ok) or a 30 amp breaker in the quick disconnect box.
In many systems the control voltage to the thermostat derives from a transformer in the outdoor unit... it could be as simple as a broken wire. Without a full diagnostic, a complete description of the unit ( AC or heat pump, etc) this is all speculation

Nov 19, 2013 | Heating & Cooling

1 Answer

Lennox central air for home not kicking on. Fan on the outside not spinning but motor is making a humming noise. No cold air coming in home. We have circuit breakers they are turn to the on position. ...


Is the indoor fan working? The problem with the outdoor fan sounds like it could be your capacitor. Turn off the power to the outdoor unit and make sure the fan turns freely using a screwdriver or something that will reach the blades. If it turns freely then it is probably the capacitor. Let me know what you find.

Aug 25, 2010 | Goodman CLT36AER36 Air Conditioner

1 Answer

AC compressor wiil not turn on


You will have to find the contactor which is located in the outside unit. And check the voltage at the contactor, 26 v as this is the thermostat calling for the compressor to come on. You can also push in the contactor and see if the fan and compressor start. There should be an outside fuse box close to your condensing unit. Good luck

Jul 23, 2010 | Samsung AW1203B Air Conditioner

2 Answers

Where is the fuse box?


Does the indoor unit run?

It sounds like you're looking in the right place. Check your power panel for a tripped circuit breaker (maybe more than one) or if the home is older, it may have fuses. It's possible that the outdoor disconnect also has fuses but that's not as likely. You can check around the outdoor unit and see if you smell anything burnt.

You can aso turn off the unit at the thermostat, wait a few minutes and see if the unit starts back up, but check the items listed above first.

Jul 17, 2010 | Goodman CKL42AR42 Air Conditioner

1 Answer

Outside fan not turning on.


Reset buttons (if applicable) are usually located near the brass service valves.
There is a circuit breaker in your electrical panel that furnishes voltage to your outdoor unit. This is a seperate circuit from the indoor unit.
Outdoor units should have a service disconnect mounted within 10-15 feet. This service disconnect may have fuses or a circuit breaker in it.
Usually if a fuse opens, you will not be able to tell from a visual inspection. It is best to take the fuse to your local hardware store where they can test it and offer a replacement if needed.
I hope you find this to be very helpful moving forward.
:-)

Apr 21, 2010 | Heating & Cooling

1 Answer

Rudd Acheiver 13 nothing turns on outside but the fan inside is


Try pushing the red reset button at the outdoor unit near the brass service valves (where the refrigerant lines enter the outdoor unit). Also check for power from circuit breakers furnishing power to the outdoor unit ( the indoor unit has a seperate power supply source ). There may be fuses in the service disconnect box mounted near your outdoor unit. If those "blow" they will prevent operation of your outdoor unit. You can test continuity using an ohmmeter. If you do not have an ohmmeter, you can take the fuses to the local hardware store. They should be able to test them for you and offer replacements if needed. If after doing all these steps you continue to have problems, let us know and we will dig a little deeper. :-)

Apr 18, 2010 | Ruud UBHC Air Conditioner

1 Answer

Inside fan running outside not


There is an electrical box on the wall near the outdoor unit. open it and be sure that the circuit breaker is in the on position. Same in your electrical panel, be sure that the circuit breaker is turned on.

Aug 16, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Heat pump not running


check your house circuit breakers first that should be labeled heatpump or outdoor unit
make sure it is on and or not tripped
then if you have a box outside near the outdoor unit open it up and see if there is a breaker or maybe fuses that could be blown

May 26, 2009 | Goodman CPLE24-1 Air Conditioner

1 Answer

Heat pump not running


Depending on the age of the unit it could be several things, does it have a circuit board? Contactor could be bad, freon leak if it has a low pressure switch, burnt wires, connections, etc. Do a complete visual and check for 24 volts, does the indoor unit run? Transformer may be bad.... No indoor unit - no outdoor unit, most of the time the outdoor unit gets its 24 vac power from the indoor unit which runs them both, look for fuses (like car fuses)..

Apr 26, 2008 | Heating & Cooling

2 Answers

Carrier air conditioner


Sounds like you either blew a transformer, have a bad circuit breaker or blew the main fuse in the outside disconnect. If the indoor unit is still blowing air (no matter what temperature) start looking at the power supply to the outdoor unit. From the circuit breaker, the power will go to a small box located within a few feet from the outside unit. This box will have either a lever on the side or you will be able to open the box and pull out the fuses. From this box the power goes to the condensor. The first thing you should do is to turn off the breaker to the outside unit. Flip it back on and if you have a call for cooling, after about 3 minutes the outdoor unit should start. If it does not, shut off power again to the unit by switching off the breaker, go outside and pull out the fuses in the disconnect box. Using a multi meter, check for continuity thru the fuses. If you have continuity, call your technician. If one or both fuses show no sign of continuity, replace the fuse(s). Make sure that the thermostat is working and sending a signal to the indoor air handler. You may be able to check this by turning the fan switch to "Fan" and see if the blower turns on. You may just have a bad thermostst. Caution should be used anytime you are near electrical components. If you do not have the skill-set required to test electrical equipment, leave it to a proffessional.

Sep 03, 2007 | Carrier 38CKC036 Air Conditioner

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