Air Conditioner, Heat Pump Contactors
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This page contains some of the contactors that I use to repair air conditioning and heat pump problems. I see these problems most often every summer in our 16 year HVAC business. Let us help you repair your air conditioner and save money!
*Summer Air Conditioning Tip:
Always turn your air conditioning system off if there is a threat of a storm. A lightning power surge, or if the power is goes off and on can ruin your air conditioning system. We get lots of repair calls after a storm. These calls could be prevented if people could remember to turn their air conditioners off during a storm.
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Please always, make sure all electrical power is turned off before attempting to do any heating or air conditioning repairs. Please read our disclaimer and "Safety First" related information near the bottom of this page. Thank You!
Air Conditioning Contactors:
Problem: Air Conditioning outdoor condensing unit or heat pump unit will not shut off. It continues to run no matter what you do. The only way you can get the outdoor unit to shut off is turn off the breaker or pull the outdoor disconnect. Also, sometimes when the contactor fails the outdoor condensing unit will not come on at all. Dirt or insects (I see ants many times) can get in between the contact points while the contactor is off, and cause the air conditioner not to come on at all. When the contactor is stuck in the "On" position (contacts welded together), Ice will form on the indoor evaporator coil and all the way out to the outdoor unit. I have seen 1 or 2 inches of ice form on the line set and outdoor unit compressor. You will not get hardly any air flow through your duct work when this happens because the evaporator has become a complete block of ice. If this is your problem then your contactor points could be stuck, welded together causing the outdoor unit to run continuously. Many times when ants or insects get between the contactor points the outdoor unit will run (burns the insect out), but because of the uneven wear (arcing) in the contact points the contactor will soon fail. Arcing causes a tremendous heat build up and pitting of the contact points. If you are in an area of the country where insects are prominent in and around air conditions, then I would suggest you blow your contactor out with compressed air or check and make sure you do not have any insects in between the contactor points at the beginning of each cooling season. You might want to keep a spare contactor on hand?
If your contactor looks like the single pole contactor below, with burnt or pitted contacts then you need a new contactor. The picture below is of a single pole contactor out of a Rheem air conditioner. The blue and yellow wires (near the bottom of the picture) are the low voltage wires that come from the thermostat. The red and black wires on the right side are the high voltage wires coming from the disconnect box. The four wires on the left side connect to the compressor and fan to make them come on when the contactor is energized by the low voltage wires (blue & yellow) coming from the thermostat.
Solution: You need to solve this problem by purchasing a new contactor. We sell them below. We have a new contactor for sale just like the picture of the burnt out contactor above. Many of our customers have requested that we sell the contactor like the picture above.
Contactor's Purpose:The contactor has a 24 volt relay, when this 24 volt relay is energized from the thermostat, a call for cooling, the contacts on the contactor close, making a high voltage (220-240) connection to your compressor and outdoor fan, causing the outdoor unit to come on. There are several types of contactors that we sell. They are pictured below. *Please make sure your electrical power is off before attempting to remove or work on air conditioning equipment. Pull the outdoor disconnect or indoor breaker that controls the air conditioner. Turn the furnace off or thermostat off so no low voltage is going through the low voltage wiring.
Below are pictures of the contactors that I use in my HVAC business. I probably replace about 20 of these every summer. You will need to look at your contactor and see if they are similar to these:
If you are looking for Bryant, Carrier Contactors Please Click on the logo below.
Honeywell, Single Pole 24 Volt Air Conditioner Contactor
Part #DP1030A 5013
The first contactor that we sell is a Honeywell Part # DP1030A 5013, one pole 24 volt, 30 amp. contactor. This contactor has a place for 7 wires to connect at each end of the contactor. Below we have pictures with an opportunity for you to purchase.
Furnas, Single Pole 24 Volt Air Conditioner Contactor
Part # 45EG10AJA
The 2nd contactor that we sell is a one pole 24 volt, 30 amp. contactor. When the contacts close the bottom "L1" of this contactor makes high voltage connection, or contact with the top of the contactor "T1" and your air conditioner or heat pump comes on. I like this contactor because it has a cover for the contacts that keeps the dirt and insects out. This contactor has a place for 8 wires to connect at each end of the contactor. Below we have pictures with an opportunity for you to purchase.
Above Specs On Label of Contactor:
Top View Box Specifications: With Cover Removed:
Furnas Single Pole 24 Volt Air Conditioner Contactor:
Part # 45EG10AJAL1
I really like this single pole contactor because it has the large screw lugs on each end for large wires and easy connections. I also like this contactor because it has a cover for the contacts that keeps the dirt and insects out. If you do not want to use the large screw lugs then they can be removed. This makes it easy to connect large wires. This contactor has a place for 8 wires to connect at each end of the contactor. Below we have pictures with an opportunity for you to purchase.
Siemens 45GG10AJA, Trane CTR1152, 40 Amp Single Pole Contactor
If you have a larger air conditioner 4 to 5 tons and need a 40 amp single pole contactor then the Siemens 45GG10AJA would be a great choice. This contactor is a Trane, American Standard OEM part #CTR1152. This contactor has a place for 8 wires to connect at each end of the contactor.
I especially like this contactor because it has a cover over the contacts to
keep dirt and bugs out. Below we have pictures with an opportunity for you to purchase.
Goodman, Siemens, 25 Amp Double Pole 24 Volt Air Conditioner Contactor
Part #CONT2P025024VS
This contactor is recommended by Goodman to Replace Goodman, Janitol Part Numbers: B1360321, CONT1P030024V & CONT1P025024V
This new double
pole contactor part #CONT2P025024VS is recommended to replace Goodman Part
Numbers #B1360321 & CONT1P025024V. Goodman recommends this double pole
contactor to replace the old single pole contactor that is obsolete. I
really like this double pole contactor because it has the large screw lugs
on one end so you can easily connect wires. This makes it easy to connect
large wires. I also like this contactor because it has a cover for the
contacts that keeps the dirt and insects out. This contactor has a place for
8 wires to connect at each end of the contactor. Below we have pictures with
an opportunity for you to purchase. Please send your air conditioner or heat
pump model number if you would like for me to look it up in our Goodman online program to make sure this is the right contactor for your unit. Our email address is:
support@arnoldservice.com
Above picture of label: Above picture of contactor:
Goodman, Siemens, 30 Amp Double Pole 24 Volt Air Conditioner Contactor
Part #CONT2P030024VS
We also sell a
higher amperage rated contactor that looks just like the CONT2P025024VS
above. The CONT2P030024VS contactor is rated for 30 amps. On the label the
CONT2P030024VS contactor has a FLA (full load amps) rating of 30 amps and
the LRA (locked rotor amps) of 180 amps. This is a stronger contactor
compared to the CONT2P025024VS and is used on many Goodman units that are
larger than 3 tons. We did not take a picture of this contactor because it
looks exactly like the CONT2P25024VS pictured above. Please send us your
Goodman, Janitrol air
conditioner or heat pump model number if you want us to look it up in our Goodman online program to make sure this is the right contactor for your unit. Our email address is:
support@arnoldservice.com
Furnas, Double Pole 24 Volt Air Conditioner Contactor:
Below, we sell the two pole 24 volt, 30 amp. contactor. I really like this contactor because it has a cover (picture on far left) that protects the contacts from getting bugs and dirt between the contacts. When both sides of this contactor close it makes a high voltage connection, or contact, and your air conditioner or heat pump comes on:
Top View: Top View if Cover were removed: Box Specifications:
Double Pole Goodman 24 Volt, 30 Amp & 40 Amp Air Conditioner Contactor:
Part # ELE-2P40A24V & Part # ELE-2P30A24V
Next, We wanted to offer two heavy duty contactors that you might find on some of the larger heat pump and air conditioning systems. You would probably find this contactor on air conditioners and heat pumps that are 3 tons or more in size. We decided to offer these double pole Goodman, Janitrol 24 volt, 30 amp & 40 amp contactors. These contactors look the same as in the picture below. The only difference is in the amp rating. One is rated at 30 FLA (full load amps) and one is rated at 40 FLA (full load amps). If you want us to check and see which contactor your Goodman air conditioner or heat pumps uses, then please email us your model number and we will be glad to look it up. Our email address is: support@arnoldservice.com. When both sides of this contactor close, the contactor makes a high voltage connection, or contact, and your air conditioner or heat pump comes on. Please notice in the last picture (bottom) how the contacts are covered so they do not arc between each other. This cover also protects the contacts for getting insects, dirt and debris in between the contact points. This is a great heavy duty contactor. The physical size of this contactor is 2 1/2" Length X 2" Width X 2 1/2" tall. Four pre-drilled screw mounting holes are provided in the contactor's base.
Below is a picture of the contactor with an opportunity for you to purchase.
|
Above Picture of 30 & 40 Amp. 2 Pole
Contactor Top View. The contactors look the same. Only difference is one is 30 amp and one is 40 amp.
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Please Remember Safety First
Please read our disclaimer and safety related information below before attempting to do any type
of Heating or Air Conditioning Repair. We do not want to see anyone get hurt or shocked! Thank You!
*Please always turn off all electrical power, and discharge the capacitor/capacitors (if working around capacitors) before attempting to inspect or repair any heating & air conditioning equipment. Check to make sure the electrical power is off with a reliable meter. I have never been shocked by a capacitor (knock on wood) and rarely see them discharge, but it is a good idea to discharge them before working around them. Please read below. It tells you how to discharge a capacitor.
Please read the following:
How To Discharge The High Voltage Capacitor: The capacitor is discharged by creating a short circuit (direct connection) between the two capacitor terminals and from each terminal to chassis ground (bare metal surface). Please make sure that you are touching the insulated screw driver handle and not the metal part of the screw driver before attempting this procedure.
-
Do this by touching the blade of an
insulated-handled screw driver to one terminal, then slide it toward the
other terminal until it makes contact and hold it there for a few
seconds. (Sometimes this can result in a rather "pop!")
-
Repeat the procedure to create a short between each capacitor terminal and chassis ground.
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If the capacitor has three terminals, use the same procedure to create a short circuit between each terminal and then from each terminal to ground.
Disclaimer: Arnold's Service Company, Inc. assumes no liability for any incidental, consequential or other liability from the use of this information. All risks and damages, incidental or otherwise, arising from the use or misuse of the information contained herein are entirely the responsibility of the user. Although careful precaution has been taken in the preparation of this website information, we assume no responsibility for omissions or errors.
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Sincerely, Steve & Barbara Arnold
11506 Seatonville Road
Louisville, KY. 40291