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20 ton trane voyager roof top unite keeps blowing num 2 compressor contactor every few weeks

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SOURCE: AC Compressor

You can find the contactor in the access/service panel area.

Posted on Sep 17, 2008

  • 145 Answers

SOURCE: Compressor will not start.

If the unit is low on freon it will short cycle but a compressor internal overload will cause it to. Lets hope its the freon. Has it been frezzing up lately. Low freon is the cause most of the time. Make sure your filters are clean and both fans are running. Hi head can cause this to. (fans not running) How old is this unit. Maybe the coils need to be cleaned. Sound like this unit may need a check up and a good cleaning.

Posted on Nov 02, 2008

  • 1 Answer

SOURCE: Ruud 5-ton 10 SEER heat pump compressor turns off after 20 minut

You may have cottonwood on your compressor. Before you spend any money, do two things. Rinse off your compressor to clear any cottonwood, and check your filters, they may need to be replaced. Hope that helps!

Posted on Jun 24, 2009

  • 532 Answers

SOURCE: A Trane 20 Ton roof


Before ordering an expensive air conditioner service call to restore lost cooling capacity, here are a few simple steps to perform.

Check the Room Thermostat Temperature Setting: Set the thermostat to at least 5 degrees below room temperature. Our elderly mom has no patience with switches and controls. She regularly calls her air conditioning service company with a service request, sometimes late at night, because she has simply failed to set the temperature on the thermostat lower than the room temperature. Don't drive your A/C like our mother.

Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". If the thermostat is not set to "cool" it is simply turning off your A/C.

Check that electricity is on
for the equipment. Check any service switches, including outside by the compressor, inside at the air handler, and fuses or circuit breakers in the electrical panel.

Check the Outside Air Conditioning Compressor: is the outdoor compressor-fan unit (the condenser unit) running? If not, be sure that the outdoor service switch and the indoor power switch, fuse, or circuit breaker are all in the "on" position.

Check the Indoor Air Handler: is the indoor blower unit running? If not be sure that the electrical power switch at your furnace or air conditioner air-handler is in the "on" position. Sometimes there is more than one switch, such as one right at the unit and another at the entry to the room where the equipment is located, or even upstairs on a higher floor if your air handler is in a basement or crawl space.

After doing all you should be able to fix the problem without calling a technician.

Thanks for contacting Fixya.

Posted on Jul 24, 2010

  • 111 Answers

SOURCE: Compressor contactor not closing there

Sounds like an open in the stator coil itself if power is at it's source. Common in auto application as well where there is no magnetic field to draw in compressor drrrive plate/clutch. Ohm out stator for an open, Otherwise, physical debre/rust seizure can prohibit operation.

Posted on Aug 12, 2010

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2 Answers

Brand New 2 weeks old 4 ton Trane compressor leaks a lot of water onto pad

If the unit is running in cold weather than there is ice building up on the coils located outside. This is normal in that the unit is running in heat pump mode heating inside and cooling outside, After the unit detects the ice build up it briefly reverses the cycle heating the outside coils melting(defrosting) the ice which you observe as water on the pad.

The video gives you an example of the defrost cycle!
2012 Trane XL15i Heat Pump Defrost Cycle Steam Show

Dec 21, 2015 | Heating & Cooling

1 Answer

2014 Dometic Brisk II 15,000 unit won't cool below 88 degrees

Check the unit to see if the outdoor fan and compressor are coming on. If not, check to see if power is reaching the contactor, both the high power contacts and the low voltage solenoid. Some contactors can be manually actuated, and a quick press (with a NON CONDUCTIVE ITEM) can show you if the contactor is engaging. If the solenoid is not working, check the wiring of your thermostat. When set to cool mode, there should be voltage on the solenoid of the primary contactor, sending power to the outdoor fan motor and compressor.

If the outdoor fan and compressor engage normally, then make certain the coils are free of debris and other blockages. If air flows freely and the compressor is running, feel the tubing for temperature changes. One side should grow cooler and the other warmer.

If the compressor runs but there is no temperature change, take your unit to a certified technician to check for leaks and system pressures. Roof top units typically use R22 refrigerant not R134a automotive refrigerant, which require EPA certification for purchase and dispensing.

Jun 25, 2014 | Dometic Rooftop RV Air Conditioner

1 Answer

We have a 3 1/2 ton unit the internal blower is blowing but the fan on the top of the unit is not turning and we have air blowing out of the vent but it is not cold model number gph1342h21ae

If it is just the fan then the motor needs to be replaced...let it cool a few hours and then try it and see if it is just the fan or the fan and compressor that does not work...
If neither will start then either the t-stat is not working right or the contactor in the outdoor unit has gone bad...


Apr 23, 2011 | Goodman Heating & Cooling

1 Answer

I have a small house with a outside package unit American standard (Trane) Model# WCM030F100BB, italso says BAYHTRN110A. When I select cold from the off position on the thermostat it immediately pops the...

I would check the outdoor unit, Trane uses "Sump Heaters" on their compressors
and when one fails it will blow fuses at the disconnect or trip breakers.
The sump heater is a small metal pencil sized item at the bottom of the compressor
with something that looks like lamp cord going to it. Also when the start capacitor
fails it will exhibit this symptom. Look at the can shaped items inside the cover
If they are leaking, or bulged this may also be the problem.
(with the breakers off to everything including the inside unit to prevent shorting
the transformer)
These are the most common problems and the parts are less than 20 dollars each.
I service 155 trane units at my properties.
hope this helps.

Mar 19, 2011 | American Standard Heating & Cooling

1 Answer

Trane voyager rooftop second stage contactor keeps blowing coil it fries ////after a week or so sometimes longer or shorter wont pull in and seems to weak to pull in but when i put a seperate contactor out...

One of the safety switches in the control circuit for the secind stage are bad... the contacts are pitted or corroded and are not passing the full voltage will be hard to find the bad one because it will only do it under load...I would start jumping out safety switches for a short time and checking voltage to the coil til you find the culprit...


Aug 21, 2010 | Heating & Cooling

2 Answers

Trane Weathertron xe 1000, outside unit has hum and fan is not working. unit is 7 yrs old,never any other problems.

Hi, Trane weathertron are top of the line units, and I have had extensive schooling on all tranes, commercial Intellipaks and Voyagers. If the fan has stopped, the bearings in this fan are failing and that's what you hear humming this motor or most likely the contactor. If it is easy for you to remove the fan guard ( power off ) you can turn the prop/blade and see how tight the bearings are. Carfefully, place your hand on the body to see if it is hot. If the hum is not from the motor, it will be from the contactor pulled in when in cooling mode, causing a load on it due to the condenser fan motor failing. Look on the front and rear of the motor for small caps that would be for oil. Most motors have sealed bearings now, but they still use ones that need a few drops of 20 weight oil during service of the unit. If you do, you might try going to a hardware store to get a plastic oiler bottle with the telescopic spout to reach these bearings and try to oil them for a $1.20. This may get you back on line again, only if you do have this type of bearing. Another part to check would be the dual run capacitor in the control section on the outdoor unit. Normally round and silver/gray in color, some are plastic and they look like a small can of V-8 juice with several wires coming out the top. Others are shaped like a flask without the top, lol. It will have 3- sets of connectors on it. Marked Herm., fan, and C for common. Look it over well, at the top, sides, and bottom. If you see any sings of a swollen and distorted top or body, the top swollen up, like its ready to burst, or it has and you see oil all over it, this is why the motor has failed or will not run. Replace this first as the cost is around $15.00 or so. If you have a Granger's supply, they will have them. If not, a appliance parts house. This capacitor gives your condenser fan motor and compressor a boost upon starting and keeps them running a speed at all times. If they fail, the motor could or will fail in time and so will the compressor. If it looks good, no oil leaks, you will need to have your condenser fan motor replaced. This motor works the hardest of all, in the heat plus the heat the motor gives off so its not unusual to loose this motor. At the start of summer, my crew no to stock there vans with all types of condenser motors and run caps, 1/8, 1/4, 1/3, 1,2, 3/4, and 1h.p. on commercial units. On your contactor, you will see it, it has either 1 or 2 sets of contacts on it and this is where your high voltage leads come in and connect. They will be black and some burned places. I would with power off if you have a small piece of fine sanding cloth or paper is to try and clean them up some. This is not a must. So, if all looks good, and the motor is hot, it has failed. A a/c company should charge you around $150.00 to replace this motor and they come with there own single run cap just for the motor. They will need to make a few changes on the wiring of the new motor and cap. Its around a hour to change out, plus maybe a truck or trip charge. Ask them about all charges. I am sorry for such a long solution, I just wanted to tell you a little about your unit and give you some experience. Please keep me posted and rate me if you will. I will be here if you need me for anymore help. Thank you for using
A/C & Heating Contractor

Jul 01, 2010 | Heating & Cooling

2 Answers

AC Compressor

Check your CONTACTOR - the black "block" where all the line wires connect. Sometimes they stick. It's a cheap part, although make sure you take a pic of the contactor with all the wires attached BEFORE you take the wires out to get a replacement.

Aug 02, 2008 | Heating & Cooling

1 Answer

We have a roof top mount cetral heating & air unit and its a day& night unit it will blow air out but not cold air .went on top of roof to check condencer and it is hot and coils are normal...

sounds like the compessor over load is cliking on&off compressor not starting could be a capacitor or compressor or if your lucky a contactor dan

Jul 13, 2008 | Heating & Cooling

1 Answer

Trane HVAC Unit

If your condenser blow air up through the top of the condenser and you are concern about rain water affecting the unit.

You can install a roof or rain hood about 4ft above the unit to keep the rain off, The unit must be able to blow air off without causing Hi head pressure to affect the unit, The condenser must breathe or desipate heat freely.

Tell me if your question answered or if it works for you.

Mar 31, 2008 | Heating & Cooling

1 Answer

Coleman rv roof air conditioner

(1)Check compressor contactor or relay if it stock in the close position
(2)Check for welded contact points
(3)Check switch control for defect
(4) Check if compressor contactor still geting power when it is off

Let me know what works for you.

Mar 30, 2008 | Heating & Cooling

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