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Replacing contactor HN52KC024 wiring schematic

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SOURCE: Intertherm furnace heat pump combo had a small

ok the transformer has a common which is black the second wire red is coming from the contactor side at 240 volts the last wire on the side opposite the common and 240 connection goes to the 24 volt side of the contactor. Hope this helped


Posted on Oct 13, 2009

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I have an old air compressor that I have replaced the motor magstart and pressure switch on the motor is a 220 / 240 volt 5 horsepower motor it also has a low pressure oil cutoff switch does anybody have a...

Control: L1-SS-P-O-OL-OL-M-L2 In series, L1 is line 1, SS is start/stop switch, P is pressure switch, O is oil switch, OL is overload contact, M is magnetic coil (solenoid), L2 is line 2.
The voltage of M must be rated for the control voltage, across the line voltage (240V) or of a control transformer voltage, e.g. 240v/24v. A control voltage would be wired across the line, to L1 and L2.
Power: L1-T1-OL-M1, L2-T2-OL-M2. Line one to Line 1 on contactor, T1 on contactor jumpered to OL (overload heater) and out the overload heater terminal M1 to the motor terminal 1. Same for line 2, Line 2 to L2 on contactor, T2 on contactor jumpered to OL (overload heater) and out the heater overload terminal to M2 motor terminal.
The heater overload relays needs to be chosen by the motor full load current, a chart is given with a motor starter on selecting heater size. If no chart is available, go 115% of the motor FLA (full load amps) to select a heater size. E.G. 25 FLA motor at 115% is 28.75a. Sorry, no schematic available now, draw your own from this info. If using 3 phase, add the third line as duplicating one other line1 or line 2

Mar 10, 2015 | Air Tools & Compressors

1 Answer

I have a goodman phkjo48-1 heat pump about 5 yrs old. suddenly no matter heat or air turned on only the fan would come on regardles,the main motor outside would not run. I took off the motor to have it...

Yes Jay, this is what happened. Hopefully you didn't burn out the condenser fan motor you just had tested.Brown normally connects to the capacitor, as this is what starts and keeps the motor running. Hopefully, it just got hot and overloaded to trip the breaker. You say there are 3 wires coming out of a junction box, but you don't remember how they go. @ are hot wires as this motor is 220 volts. Not being onsite with you, and the wires are now faded from the sun, you will need to find out where they connect, ( the 3 coming out of box ) to see which 2 go to most likely they contactor you replaced. They will connect 1 to the load side and the other to the load side but opposite each other. The load side is the side of the contactor that the main 2 hot wires dono't connect to. This is the line side in.If you are sure you wire the contactor right, then it has to be the motor. If you follow the brown wire back, it should go to the run capacitor. Re-check your connections on the motor, even if you have to look at the schematic, which will show you where they connect, and the colors. It should be real easy for you Jay. Get back to me and keep me posted. The new motors have 2 brn wires that go to the capacitor and 2 to 3 going to the load side of the contactor.
A/C, & Heating Contractor.
PS, Please rate me on my help to you. Thank you.

Feb 17, 2011 | Goodman PHKJ048-1 Air Conditioner

1 Answer

Modle No. pa10ja042oooacaa I need a wiring schematic for this unit . this is a split system the thermostat wires and the sequence and the relay need rewiring.

this is a 10 seer straight cool unit only 2 wires going to the unit install a new contactor and the thermostat wires go to the contactor unless u are talking about the air handler this is not the model # for the inside unit

Aug 30, 2010 | Heating & Cooling

1 Answer

Turned unit on for first time, it will not kick on

does the indoor fan blow? If it does you are getting the 24 volts from the thermostat to the ouside contactor need to check your contactor in the oustide unit this is what kicks on the compressor it take the 24 volts and goes to 230 volts to run the compressor and condensor fan. check your schematic for the placement of the contactor.

Jun 04, 2010 | Carrier 38CKC030 Air Conditioner

1 Answer

Intertherm furnace heat pump combo had a small fire in the control wiring when a contactor for the heating elements burnt. I am an electrician by trade and have replaced all the wiring and contactors but...

ok the transformer has a common which is black the second wire red is coming from the contactor side at 240 volts the last wire on the side opposite the common and 240 connection goes to the 24 volt side of the contactor. Hope this helped


Oct 13, 2009 | Heating & Cooling

1 Answer

Schematic missing - need to know which cond unit

Black wire goes to contactor. On your capacitor the brown wire goes on one side the blue and the other wire from your contactor goes on the other sideof the capacitor. Russ

Aug 07, 2009 | Heating & Cooling

1 Answer

Goodman PC060-1B Package AC...Need Wiring Help

Depending on the size of your Electric heat you can use one set of wires because your unit does not run with the heat like the heat pump. The large set of wires going to the electric heat should be used. You may have to jumper a new set to the contactor. On Goodman unit come in L1 and L2 jumper to contactor. Very simple good luck. Rus

Jun 21, 2009 | Goodman Heating & Cooling

1 Answer

Weed eater pulled out red & white wires from thermostat at a/c unit. Red went to yellow and white to ?. Unit is an intertherm unit, model unknown but schematic #703909b

if there is only two wires at the condenser it does not matter which side of the contactor you attach it to with little blue wire nuts.

The two wires will send the required 24VAC to pull in the contactor

May 07, 2009 | Heating & Cooling

1 Answer

I am a ac tech, and i was working on a old carrier unit, wich had no schematic diagram. I need it in order to get the compressors going. if i give you a model # can you please provide one. roof top ac...

you aren't an ac tech number one but i shall overlook that . your question is llike will the sun come up in the north or the south tomorrow. obviously in the east as it has since the earth was created. anyway. all compressors since the beginning of time wire up the same .a wire commonly referred to as the common goes from the contactor to the compressor. usually black in color, hence the old coloqualism Blacks are common. the run wire is from the contactor to the run side of the run capacitor or from the contactor to the run connection on the compressor. hence the old slogan reds run when you point a gun at them. the only wire left is the start wire that come from the start capacitor and is usually yellow . hence the old saying blacks are common, reds run, and yellows are always starting something. very ethnic i know but thats how i was that the wirings correct check to see volts through contactor are correct and if one side of contactor is not feeding. if volts good then check capacitors with a cap checker. if all else looks good kill power and inspect compressor terminals at compressor. if burned off consider a termilock kit good luck..

Jul 19, 2008 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Carrier A/C units

Double check that the new contactor has the same electrical ratings on it. My guess is that the coil should be 24v while the relay should be able to carry the same amperage at 220v.

First shut off the breaker and disconnect switch for the furnace and outdoor condenser and call a licensed HVAC contractor:)

If you are determined to do it yourself, Then read the schematics first. Be aware, if you mis wire the system you may cause more damage than you have now. Not to mention your personal safety is at risk.

I am basing this on the most common style contactor found in my area.

The main relay side should be labeled. (eg. L1,L2-T1, T2). These should match exactly like the old one. L1 and L2 are the incoming power. T1 and T2 are the power leaving the contactor. All the 220v wires should correspond to one of these four terminals either by screwing them down or fitting the spade connectors together.

Usually the 24v wires will plug onto the coil (near the bottom, left and/or right sides of the contactor) silver spade connectors.

(STEP 1.) Leave all Wires Connected to your Old Contactor.
(STEP 2.) Remove the two mounting screws that hold the Old Contactor to the Air Conditioners casing.
(STEP 3.) Now Install the New Contactor to the old contactors existing location using the Same two Screws.
(STEP 4.) Now take Off one wire at a time from your old Contactor and Install each wire one at a time to the proper location on the new Contactor.

Jun 24, 2008 | Carrier 38CKC042 Air Conditioner

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