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Where is t1 and t2 on single pole contactor - Ruud Central System Air Conditioner

Posted by Anonymous on

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6ya6ya
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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

  • 41 Answers

SOURCE: AC CONTACTOR REPLACE

contactors are just a switch l is the power t is the load (check the coil voltage see that its the same) dan

Posted on Jul 19, 2008

Service Expe
  • 1 Answer

SOURCE: I need assistance with swapping out a contactor.

I don’t believe changing the contactor to a double pole contactor will solve this problem. It appears by your description that bugs are being attracted to the contact points on the contactor. Changing to a double pole contactor will not eliminate that problem but only provide another contact point for the bugs to be attracted to. The most effective solution would be to replace the current contactor with a sealed design where the contact points are totally enclosed. Enclosed contactors are completely enclosed protecting it from bugs and dirt. These type of contactors are available in the single pole design so no further wiring modifications are needed. You can consult a professional A/C service company like mine for more information and assistance.

Hope this helps. Let me know if there's anything I can do for you!

Sam, The Service Expert
Visit Sam's Blog

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Posted on Apr 30, 2009

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1 Answer

How to wire so either t stat will open both dampers on call for cooling


I don't know what you're trying to control - but wiring single pole (or double pole for that matter) switches - or in this case - thermostats in parallel will cause the load (dampers?) or operate and will remain operating until NEITHER thermostat is calling for cooling.

L1 is Hot
N is Neutral
T1 is TStat 1
T2 is TStat 2
D is Damper

1) Either TStat closing on rising temp will close and power D with 120V.
2) D remains powered until BOTH T1 and T2 are cold enough (satisfied) and opens.
3) When BOTH T1 and T2 are cold, power is interrupted and D de-energizes until one of the TStats calls for cooling again.

NOTE: It is possible for one TStat location to be driven TOO cold - as long as one of the TStats is calling for cooling, D will remain powered.





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May 11, 2015 | Refrigerators

1 Answer

Replacing double pole 220 v with honewell ct410a two wire120/140v wiring diagram not clear


1 power wire (120v) will go to the thermostat and 1 power wire (120v) will go directly to the unit. The other wire on the unit will go to the other side of the thermostat. The safety precaution behind using a single pole to replace a double pole contactor is that you will always have 1 leg of power going to the unit. Many systems are designed like this from the factory, but it is always better to have a 2 pole to cut all power off to the unit unless it's in operation. The unit will still not work as long as it does not have both legs of power.
L1 to Thermostat T1 to Unit
L2 and T2 wired together.

This is only for 240v systems. 120v Will have 1 common and 1 power, therefore you will need to know which wire is which. Power to thermostat, common wired direct.

Nov 26, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

I bought a new universal ac contactor relay to replaced the o.e.m. the new has l1 l2 t1 t2 . the old relay don't say l1 l2 t1 t2 or any indicatio.


The contactor should look alike. Just make sure the same wires are on the same side as the old contactor. Don't worry so much of the l1/t1 and l2/t2

Apr 05, 2011 | Heating & Cooling

1 Answer

I have a single phase copland compressor NEW ( AG133ET-001)that i just replaced. i wired common leg from contactorsT3 to compressors T3(common winding,From contactors T1 to compressors T2(Run winding?)...


you will have to look at the schematic for this theirs different units that wire different way but that sounds correct the way you have it you can double check reverse the start and run always write this down when doing these the supply house can help you to be sure just ask them say hay the diagram has worn away what is t1,t2,and t3 double check your cap it could call for a different size all compressors that ive seen does take a start capacitor some even require start assist kits unless they are three phase what is this compressor going on email me I will help you more and even call my supply house if need be pendletonheatandair@hotmail.com

Sep 14, 2010 | Heating & Cooling

1 Answer

Where do the wires from the compressure go to on main base


Wiring up a compressor
The Start wire goes to one side of the run capacitor it will be the only wire on that side of the capacitor.
The Run wire goes to the terminal side (T1 or T2) of the contactor, it will have another
wire from that terminal to the run capacitor which is the opposite side of the start wire.
The Common wire will go to the other side of the contactor (T1 or T2).
Start Kit
Start from the capacitor to terminal #1 on start relay There should be another wire from
here to start on the compressor.
Common from contactor ( T1 or T2) to terminal #5 on start relay. There should be a wire from this terminal to the Common terminal on the compressor.(there will not be a capacitor in this circuit)
Run from the other side of the contactor ( T1 or T2) to the start capacitor and from the other
Side of the start capacitor to terminal #2 on the start relay. There should also be a wire from this
Terminal to Run on the compressor.

Jan 14, 2010 | Heating & Cooling

1 Answer

Compressor won't switch on, have tried reset switch and circuit breaker, but though the wall unit comes on the compressor wont..anything I can do? This has three phase power Mitsubishi..Mr Slim


If you have any experience in working with electrical systems, you can, but if not you should call a service technician.
First being very careful, check to make sure contactor is engaging.
Then check to see if you have the same voltage across all three wires on the compressor side of the contactor, assuming this is 230 volts, check T1 to T2 should have 230 volts, then check T2 to T3 should have 230 volts then check T1 to T3 should have 230 volts. If you have 230 volts to all 3 wires then the compressor is bad probably an open winding and needs replaced. Before replacing the compressor you need to check the resistance (with an ohmmeter) between all 3 terminals at the compressor. In order to do this you need to disconnect all power to the unit and ohm the compressor terminals from T1 to T2, T2 to T3 and T1 to T3 they should all have the same resistance if they do then the windings are good and the compressor is locked up, if one of the the windings is different then the windings are bad, either way the compressor needs replaced.

Nov 08, 2009 | Mitsubishi Mr. Slim MXZ30TN Air...

1 Answer

How to install 25amp 3 pole relay


There should be 8 screws on the relay L1, L2, L3, T1, T2, T3 and two additional screws either at the top or bottom, or one on each side. The incomming, constant power in from the circuit breaker, should connect to L1, L2 & L3. The power out to the load should connect to T1, T2 & T3. The control wire from the switch or timer you will be using to close the contactor will connect to the remaining two screws. THE MOST IMPORTANT PART IS THAT THE CONTROL VOLTAGE MATCHES THE COIL VOLTAGE OF THE CONTACTOR. They will make 12vac, 12vdc, 24vac, 24vdc, 120v, 240v, 277v, etc. coils for the contactor.
Also keep in mind that when the contactor closes L1 & T1 make contact, L2 & T2, Etc.

Oct 08, 2009 | Eaton ARC FAULT CIRC BREAKER

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

1 Answer

Coleman evcon moblehome ac question


I would replace them to the exact terminals that they used to be on. Technically speaking L1 and L2 stand for Line one and Line two. This would be the incoming power from the breaker or disconnect switch. T1 and T2 are the power leaving the contactor relay.

Jun 17, 2008 | Heating & Cooling

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