Question about Coleman Mach 15 Air Conditioner

1 Answer

I have 2 15mbtu units, new, they work great on AC, but it just got cold on Friday night and the heat side doesn't work, the fan comes on when switched to heat...help

Posted by on

  • crawpatt04 Nov 13, 2010

    Thanks for your response, it seems perfectly reasonable and I will try it next week when I return to
    my daughter's. My first thought is, what's the likelyhood that both units would have the same, odd,
    symptom.

    Jim Crawford.












×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 17,970 Answers

Remove the cover, find the connection for the heat strip. Keep in mind that some models may have a fuse in the heat circuit. Look for one before you go any further. Of course, if it is blown, you know what to do, right? Fuse good?

With a tool volt/ohm meter set on ohm, test the strip for contuitinity. There will be some resistance showing on the meter if it is good. If it reads open (no reading) it is burned out and needs replaced. Some reading indicates it is a completed circuit.

If this first tests is good, then test for voltage, turn on the heat strip. Set the temperature high. Place one probe on one end of the strip the other probe to the metal shell of your unit. Test the other end of the strip. No reading at either end points to the thermostat or the switch that selects heat. Go to the switch and see if it is passing voltage to the thermostat. Test all leads into the switch.

You said your fan is running so there is voltage going into the switch fan contact. If there is power going to the heat strip contact, (which should run through the thermostat) that points to the thermostat. Does your rooftop cool? If yes, that says that part of the thermostat (cool) is working. I'm leaning toward the heat strip being faulty. You said you have used it many times... these heat strips are pretty robust but not indestructable.

If you are handy, and I could say you, that you are because you are at this fixing place, you can probably install a new strip. I presume you are in a area where it is not bitter cold or your main coach heater is working now. If you are a 50 amp hookup, you can probably add a small electric heater and not run into trouble with the power. Your AC/heat is running on a 15 amp circuit - probably by itself. The limit on your heater should be no more than what the heat strip would use - 115 Volts X 15 amps or about 1700 watts, dont go any higher with a replacement heater. If you have a 50 amp service... you can probably add two heaters and be ok but with a 30 amp... don't do it.

Additional details could find it in THIS LINK.

I hope helps.

Posted on Nov 09, 2010

Ad

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I put a new belt for the ac unit and connected it but i hear no sound or feel any air nothing is working. What can i do to fix it cause its cold at night. And hot in the day and i need it. 78 chev imp


In a 1978 Chevrolet Impala? The category you posted is home air conditioners.

Sounds like the fan has failed.

Heat comes from the radiator via the heater core and the air circulation fan. The radiator must be full of coolant.

Cold air comes from the air conditioner compressor via a clutch drive from the serpentine belt, sometimes a separate belt. Cold air comes from the evaporator element and the air is also forced by the air circulation fan.

First thing to do is find the fan body in the bulkhead and tap the back with the handle of a hammer. Sometimes the brushes stick. Then check the fuses.

Apr 29, 2016 | Chevrolet Impala Cars & Trucks

1 Answer

My 5000 BTU GE window AC is making sporatic loud popping or cracking sounds when the compressor is on and running. It has stopped blowing air! When I put my hand in front of the air vent I can feel cold...


Fan inside blower unit stuck or seized. The compressor noises are because liquid refrigerant is coming back because it's not picking up heat from the room. Check/ clean the filters and spin the motor of the fan WHILE SWITCHED OFF. If it spins, it's probably the fan capacitor. If it doesn't, get a new fan

Aug 07, 2012 | Heating & Cooling

2 Answers

Split AC whole unit turnig off at each compressor start up!


Dirty coil wash outside unit with water and change indoor unit filter

Jun 08, 2017 | Heating & Cooling

1 Answer

Air works great but no heat just blows cold air


For this types of problem,i suggest you to check this help links:----Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html
---------A/C, heater, defroster fan, not working?http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html
--------Heater problem?http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html
---------Engine Overheats and heater blowing cold?http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
-----------Heat blows cold on drivers side and hot on passenger side?http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html----------------This will help.Thanks.

Sep 05, 2011 | 2007 Suzuki SX4

2 Answers

I have a ''GE"heat &


Look at the wires that go to the compressor and make sure they are not burned off. Inspect the capacitor tops for swelling and loose or burnt wiring. Also check the connections coming from the controls. May have a wiring problem or even a bad compressor. How old is the unit?

May 17, 2011 | GE AJCQ06LCB Air Conditioner

1 Answer

WE ARE CURRENTLY IN NORTHERN TERRITORY VERY HOT AND HUMID. RUNNING AC THRU THE NIGHT IT STOPS BLOWING COLD AIR AND FAN SEEMS TO BE NOISY. HAS IT ICED UP DUE TO THE HUMIDITY. UNIT BEING RUN THRU THE DAY NO...


If your coil is freezing at night, it sounds like your getting cold enough at night to have your saturation temperature drop below the design of what the AC is able to do. If it runs all day without an issue and freezes up at night, you need to add what is called an outdoor fan cycling switch. This will turn the condenser fan off when the saturation temperature drops so it will not freeze your coil at night. You need to have an HVAC technician install this. It is not a DIY projuect since it has adjustments that need to be right. Plus, it it's a heat pump, it needs to drop the switch off in the winter.

Sep 28, 2010 | Heating & Cooling

1 Answer

LG 8008R compressor runs one minute then fan blows 3 minutes


You need to have an AC tech come out and do some preliminary testing on this.

May 12, 2017 | LG Heat cool Window Air Conditioner

1 Answer

Heat works but ac dont


Does unit do this when you turn the fan to the on position. If so you have a bad fan sequencer. Posibly

Jun 14, 2009 | Goodman CKL24AR24 Air Conditioner

2 Answers

Defrost Cycle Problems


You need to replace the defrost board and sensor

Nov 21, 2008 | Weather King 10AJA6001AH Air Conditioner

1 Answer

Nissan 2000 ac hot when idle


the a/c condenser has a fan in front ( there is actually 2 fans if you sit on the car it will be fan on right side ) if this fan does not
come on immediately when you are parked and engine in idle
there is a problem with power to it, or motor failure. If you drive it
on the highway and a/c operates fine that's because air is circulating though condenser (thats what the fan is supposed to do at idle or slow traffic)

Aug 17, 2008 | 2000 Nissan Maxima

Not finding what you are looking for?
Coleman Mach 15 Air Conditioner Logo

Related Topics:

36 people viewed this question

Ask a Question

Usually answered in minutes!

Top Coleman Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

Paul Carew

Level 3 Expert

2557 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

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

Answer questions

Manuals & User Guides

Loading...