Question about Dometic Rooftop RV Air Conditioner

1 Answer

My outside heat pupmp still runs when the tstat is turned to off, have to shut it off at the breaker

Posted by on

  • wendynut Jun 28, 2009

    recently changed blower motor

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 614 Answers

The majority of the time it is a contactor that its contacts welded together. Call service tech ask for free estimate up front. You can replace it yourself if you have a few electrical skills. To check to see if the contactor is the problem. Shut off power to indoor unit. This will kill control power to outside unit. If it still runs it is the contactor. If not you have a control problem. Tstat, shorted wires . Rus

Posted on Jun 28, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

3 Answers

Coleman Evcon furnace blower runs w/ no call for heat. Temp is 5+ degrees above thermostat setting. (Programmable tstat)


When you say door are you referring to the front door or the furnace door? If the unit kicks on AND off by itself I would say it's in the tstat or the tstat wire. If it were internal I would think the blower relay or heat contactor/relay were getting stuck AND THE FAN WOULD NOT TURN OFF until you flipped the breaker. Good luck

Mar 21, 2017 | Coleman Heating & Cooling

1 Answer

MY outside unit will not kick on now I just had it filled and seem to not want to kick on so I'm thinking it a short or the new t-stat that was just replace over the winter heat side works fine


Turn breaker off. Wire nut the red, green and yellow. Turn breaker on. Check outside. If unit is running either your tstat is not setup properly or it is bad

Jun 17, 2016 | Intertherm Heating & Cooling

1 Answer

Replaced Thermostat and now Blower Motor will not run


Sounds like a set up issue on the tstat. You say this is a packaged unit, inside the machine you should find where the tstat wires hook up. Typically red is power yellow is compressor orange is reversing valve white is emergency heat green is blower. Put red and green together, test blower. Then red green and yellow, make sure blower works again. If blower runs both ways it's either the tstat wire or tstat itself. Make sure you are landing wires on dedicated heat pump terminals, make sure in settings you are set up for heat pump with back up electric heat and TSTAT CONTROLS THE FAN. Good Luck. Also if there is a switch on the tstat for gas or electric on the back you want electric.

May 12, 2017 | Heating & Cooling

1 Answer

3 ton carrier split unit heat&cool,mod#38QH036300DL, Heat is good, thermostat will not shut it off. only way to shut the inside unit off is turn off the circuit breaker


Sounds like a bad tstat. The Tstat does control the on and off of the unit.
You can check the Tstat by taking off the white wire to the tstat and turning the heat to the on position and if it still comes on you have a bad wire. If it does not come on then you have a bad tstat.
Another option is to open the furnace and look inside at the control wires and follow them back to ensure that they are not shorted together anywhere inside the unit before checking the tstat wires.
If its the control wires then follow option 1 if not follow option 2.
1.Normally people who run tstat wire pull more wires than necessary to the tstat. Because of this you can use a different one for the heat which is white on the tstat. Remember that if you use another color on this then you need to change it on the inside unit as well. Otherwise it will not work. In other words change it on one end of the line you have to change it on the other to make it work.
To check the tstat wires, use continuity. Take all the wires off the tstat and the inside unit. These are the small control wires, not the main 110 wires. Check each one against each other to see if any of them are shorted together. Be sure to write down the wire colors and the terminals that they belong to on both sides before you take them off otherwise you will have big problems...
If you do not have another wire then pulling a new wire will be the next option.

2. If this does not solve it, then its the TSTAT, Replace it. Hope this helps.

Jan 28, 2011 | Heating & Cooling

1 Answer

ON excessively hot days, the outside heat pupmp trips the circuit breaker. Most times it is only once, I turn the breaker to "on" and it works fine. Some days it pops two or three times. When the outside...


Hello I would add a HARD START KIT to the run capasitor (if there is not one already).This makes the compressor come on easy.If the breaker trips during running time the pressures are too high,hose off the condenser coil (fins).The unit might be slightly overcharged but I would be careful before adjusting the freon at all.

Sep 02, 2010 | Carrier 38CKC036 Air Conditioner

1 Answer

Intertherm 13 SEER split air conditioner fans wont turn on?


OUTSIDE FAN OR INSIDE FAN OR BOTH. IF BOTH CHECK THERMOSTAT WIRE HOOK UP. IF YOU INSTALLED NEW TSTAT CHECK FOR JUMPER ON RH-RC TERMINALS ON TSTAT BACK PLATE. IF INSIDE FAN COMES ON WITH FAN IN ON SETTING AT FAN ON AUTO LEVER THAN PROBLEM IS AT OUTSIDE UNIT. CHECK FUSES IN BOX ON OUTSIDE WALL. SHUT OFF BREAKER FIRST.

Apr 21, 2010 | Intertherm P3RA-060K Air Conditioner

1 Answer

Inside blower not starting every time


You have a voltage bleed somewhere or a short, whatever you want to call it. Do you have a control board on this unit where the relays are integrated into it or do you have the old type where the relay is separate? Anyway, you need to take a meter and take voltage readings to the motor when it's acting up and when it's running right. I have had the same problem with a Goodman unit before and it turned out to be the tstat! What I would do is remove the cover off the tstat and take a small jumper wire and touch the r terminal to the y terminal. If the motor starts right up, you know it's the tstat. If you have the same problem, then the only thing it can be is a low voltage short to the unit from the tstat, bad control board if you have one, or a bad relay. But if the unit is working fine in heat, it's probably not the relay. I hope this helps.

Apr 08, 2009 | Goodman Heating & Cooling

1 Answer

Ruud heat pump outside unit trips circuit breaker


Check your wiring between the contactor and compressor for a short to ground, or check the compressor windings for short to ground.
With the Tstat off, the contactor should be open so the only way for the compressor to be trying to do anything is if the 110 volts from the unbroken side are traveling through the compressor to ground. Since 110v is not enough to run it, the overload is kicking it out, cooling off, and repeating the cycle. When you kick on the Tstat, the contactor is supplying voltage directly to ground without going through the resistence of the compressor windings and kicking the breaker.
Post back and let me know what you find.

Nov 20, 2007 | Ruud Central System Air Conditioner

Not finding what you are looking for?
Dometic Rooftop RV Air Conditioner Logo

Related Topics:

53 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dometic Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

Donni Steen

Level 3 Expert

659 Answers

mike cooper

Level 3 Expert

884 Answers

Are you a Dometic Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...