Question about Comfort-Aire HMC24AD-1 Air Conditioner

1 Answer

Energy Knight AC Blowing Fuses

I have an Energy Knight HMC24AD mini split unit. The past few years it would blow the 250V 3.15A slow blow fuse that is in the exchanger outside. I could change the fuse and have no further problems for the rest of the season. Well now as soon as I turn on the breaker it literally blows the fuse (into pieces!). I've done some reading and most talk about the contactor but this unit doesn't seem to have your standard contactor or at least it doesn't appear like others I've seen. I can not find any info on these units so any advice or suggestions would be greatly appreciated. Thanks in advance!

Posted by on

  • 1 more comment 
  • michael_eide May 28, 2009

    I believe you're correct on how the system is controlled with the relay, rectifier bridge, etc..after taking another look. I figured it was a short also and looked for obvious signs such as rodents, bugs, anything. There is obvious signs that mice have been visiting the system outside for its insulation and we also have a number of chinese bettles but I found nothing. Anyways, I really do not know where to begin to look for a short in the circuit. There a lot of circuit boards and not really a lot of wiring. I'll actually try taking a picture and see if I can't attach it. I really appreciate the fast response and great information. Please keep it coming!

  • fougzki May 11, 2010

    Ok I am speaking in general repair.You can begin looking, start after the fuse.It should be AC source-fuse-relay switching contact- and commonly the 3.15A fuse is connected in fan. If the fuse is within outside exchanger most probably it is connected to the fan of the exchanger. Do you happen to see the exchanger fan run? If not then it is a strong probability. Since it is visited by a mice check also it wirings, could be an open in the insulation and touching each other or the chassis. Don't forget also to check the terminal block(if ever it have) could be corrossion and help in making chassis ground or terminal bridging. And also does the fan have a capacitor? check it also if defective. Dry up capacitor act as a shorting wire if defective. And for the last is the fan itself(stuck, dirty, burned).

    Hope I give you some informational data.
    Goodluck and regards.


  • fougzki May 11, 2010

    You have a short circuit in the system. Is this is on a control module? Could be this unit is controlled by an electronic controller using a relay together with a bridge diode, filter capacitor and a control IC. That is why you are not seeing any contactor.

    And commonly since it is aircon insect, house lizard, and dirt can do short circuit in the system.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My Energy Knight mini split air conditioner does not come on at all, no sound no lights nothing. I have changed the batteries with no luck. please help

Posted on Jul 12, 2010

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:

1 Answer

My Maytag Microwave is blowing the 250v- 20a fuse behind the key panel on the black wire. It melted the fuse holder mounted to the main body of the unit. Any thoughts on why?


The magnetron is shorted, the keypad control board is bad, blowing fuses. If less than 7 years old it has a inverter board that can be trouble, But with the level of work and parts it will easily exceed the cost of a new microwave oven.

Apr 07, 2012 | Magic Chef CMV1100 Microwave Oven

1 Answer

My ac is not blowing cold air?


There can be multiple reasons for this. Is the outside condensing unit running? and this is assuming that the wall hung AHU is blowing? Also is there any tripped breakers/ burnt fuses, etc.? With a few more variables answered we may be able to come up with the solution to your problem.

Sep 23, 2011 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

A few days ago the subwoofer stopped working. Yesterday I turned the system on and it wouldn't work at all. I discovered the fuse had blown. I replaced the fuse, couldn't find a slow blow fuse so had to...


Try removing the wires to the subwoofer and then hook a "aa" battery to it and see if it makes a pop sound..this will tell you if speker is ok...if it is then I think the amplifier sectionj for the sub is what is blowing the fuses...you are probably right..it looks like it's a 1 A fuse...but if it's blowing right away..it may be circuitry related

Jan 04, 2011 | Altec Lansing VS3251 Speaker

1 Answer

Sonance ASAP1 2 channel amp/switcher keeps blowing fuses. I'm using the 1A-250V slow burn fuses like it states on the rear panel. I plug it in and it instantly blows the fuse.


If fuzes burn out at connection to computer , that necessary to check:
1 Presence of the earth between body PC and amplifier.
2 Levels of the signal at the input amplifier must be minimum.

Jan 03, 2011 | Sonance ASAP1 2-Channel Amplifier

1 Answer

What amp is the power fuse for the tv listed below?


Hi,
Fuse rating would be 3,15A 250V for this tv.
Hope this info will help you.
Thanks.

Nov 10, 2010 | Astar LTV-2701 27 in. HD-Ready LCD...

1 Answer

Energy Knight heat pump refuses to blow!


Does this problem happen when the temperature is below 30 degrees? When it gets about that cold outside, the air outside is too cold for the heat pump to "steal" heat from. On the thermostat you'll find a switch labeled aux or emergency heat. Turning this switch on will operate a traditional coil heater inside the system, providing you with heat. The only downfall to this is that it uses more energy to heat this way. Try turning the fan switch from "auto" to "on". If the fan comes on, then we can rule that out. If the aux heat switch is NOT on, set the thermostat such that the system will try to heat. If the outside unit is running, the problem is either it being too cold like I said earlier, or there's a problem with the heat pump's mechanical system that needs to be serviced by a professional. If the outside unit doesn't run but it should be, check it's breakers at the panel, the breaker inside the electrical box that feeds it, and look to see if there's a reset button on the unit itself. Finally, check the air handler (part of the system inside with the fan in it) to see if there's any circuit breakers or fuses on this unit. Make sure they're not tripped/blown. If none of this helps, you definitely want to get a pro to work on your system.

Feb 27, 2010 | Heating & Cooling

Not finding what you are looking for?
Comfort-Aire HMC24AD-1 Air Conditioner Logo

1,447 people viewed this question

Ask a Question

Usually answered in minutes!

Top Comfort-Aire Heating & Cooling Experts

yadayada
yadayada

Level 3 Expert

75066 Answers

Ottoniel

Level 2 Expert

202 Answers

Tim Whalen

Level 3 Expert

3072 Answers

Are you a Comfort-Aire Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...