Check power to outdoor unit as well. I hope this has resolved your air conditioning problem. They are 40 amp in a Mars 83317. Nissan Note (2004 – 2013) – fuse box diagram. Any ideas??? In this case, we are taking a simple voltage reading but must still be careful and confident in what we are doing. Answer: The pull tab only means that you have a non-fused disconnect, so fuses are not your problem. Now I know how I can cut costs, as I constantly call the A/C service men. The disconnect is a non-fuse, puller type and is UL listed with an enclosed pull-out switch. It could also be the transformer (120/24v). When a fuse blows, that's sometimes your A/C's way of communicating that there's a problem. Those are items that one should have some mechanical background or knowledge to be safe. Or just different colors? The wires will be labeled the "line" (which is the incoming power) and "load" (the outgoing power). My husband removed the pullout disconnect when our air conditioner stopped working yesterday and both of the fuses fell out. If you suspect your fuses may be blown, the first thing you'll notice is that the A/C unit outside is not doing anything. (Never go higher than the breaker amperage rating.) The T handle is in and I checked power from top to bottom so I know that is good .What am I missing. ... the fuse will be in plain sight.or in small control safe Shut all 240 volt breakers down and leave the main on if not sure where your ac breakers are at. Question: Why are 240 volts leaving the A/C disconnect, but 0 volts are being measured at entering contactors? It'll show you how you can find out if it's a blown capacitor that's your issue, and what to do about it. I was told that I need to run an 8 gage 40 amp circuit. published simply by CARPNY TEAM from May, 2 2016. This will be a 2 pole (double switch) breaker and rated 208/230 volt. Answer: It sounds like that could be the case and is very easy to see. 60 Amp 240-Volt Non-Fuse Metallic AC Disconnect The 60 Amp 240-Volt Non-Fuse Metallic AC The 60 Amp 240-Volt Non-Fuse Metallic AC Disconnect is designed to stop the power going to an air conditioning unit to allow for safe working conditions. Question: If the fan on the outside and inside AC unit both come on, then can the fuses be ruled out as the issue? We cannot test fuses and voltage with the power off or the fuses removed. Is this the same thing? Here, we will focus on the fuses and how simple it is to fix this problem. You are working with live electricity here. Thanks for reading. Question: Can I bypass the fuse boxes to run my AC? Hi there I’ve never had a question on a dialogue nor comment so plz bare w me...although these are useful tips I hope you can help give me some input..from what I’ve read n the Hub trying to DIY can b risky so I just want to make sure I get it all b4 I take that A/C and breaker are brand new..since last summer(1yr)..A/C has been running great then 1 day humming tripped breaker..although these are all new is it still possible for the fuses to burn out so quickly.? Should I be using 30 amp fuses then? Different Types of A/C Fuses Replace the fuse as soon as possible. I replaced it, thanks to your instructions on another Hub, and it powered right up. It's not much different than changing the batteries in something and you don't have to touch any wiring or anything like that. An air conditioner fuse prevents any parts of HVAC to overload or overheat. I found out that the fuses can go either way, which is what I suspected, but thought I would ask. Tested, line is fine, but my load side is bad. If the band is broken or melted, replace the fuse. With the wiring exposed, you should be able to locate the incoming and outgoing wires. Though it is most common that they do, and it's code in many states, some do not. Is there a right or wrong way to put them in? Which we were told was a sign that it was the fuse on the control board or the control board. Guide to Air Conditioner Specifications and Troubleshooting Electrical Question: The buyers of my home want me to call out an electrician to fix a problem with the air conditioning. Inside Air Handler the fan is not coming on, turned temp to 68 (got nothing). do I need a separate breaker for central air ? We offer a full range of heating and cooling services including 24/7 emergency repair service. It is good to know though which is which for future reference. Jillane Barbee - Thank you for the kind words. Still humming. Here, you see the handle is removed and the fuses have been pulled out. Question: I was able to replace my capacitor but one of the wires burned off about a month later. My AC broke down in the 90+ degree heat yesterday. They are the screws that hold the wires down. It might be time to hire a skilled HVAC technician or buy a new A/C. On the thermostat it still shows the blinking snow flake. Pull out … Passenger Compartment Description: Central Air Conditioner Fuse throughout Air Conditioner Fuse Box Outside, image size 400 X 311 px, and to view image details please click … Let's go through this process first and then, for those of you who don't have a voltmeter or are uncomfortable testing voltage; I will give you another method for checking the fuses. for pricing and availability. Answer: There isn't one on the condenser. Its a Carrier unit (about 15 years old). Any suggestions. If the fuse keeps blowing then there's probably a bigger problem with your cooling system and it's time for you to figure out what it is. Or will any 20 amp AC cartridge fuse work? If it is, then you will be fixed up for less than a Big Mac. Remember, if what you find in your system doesn't match up to what I've explained here, don't guess. (The same model you show, only I'm confused as to the direction yours are inserted.) dedra - My apologies. If it's humming but nothing is're hearing it's effort from what I can tell. There are only fuses in the disconnect (if a fused disconnect) at the condenser, but they are much higher rated than 3 amps. MRCOOL. Try Air Conditioner Coil Cleaning. Hello Dan, My Ac quit so I checked the fuses. Marcy Goodfleisch from Planet Earth on July 28, 2012: This is one task I could probably do myself - I think! Why Is the A/C Humming With the Power Off? Is this usual I just had my unit installed 3 years ago by a licensed HVAC tech. Maybe at the stat, or where it connects in the furnace. Sounds like you still have one blown fuse. The unit should say right on what the "max fuse size" or "max amperage" is, and you can go buy the fuses. I recently had my blower motor and capacitor replaced, when I had to use the central ac unit. I did see a comment that they are connected to the furnace..(see I am new at this) it’s running just fine..the fan is not blocked..any suggestions would b helpful if it’s none of the above..before I contact a specialist..thank you. An AC person probably would charge a hundred dollars or more, without the owner's knowledge that only the fuses may need replacing after a break down. I'm glad I was able to help even if in a small way. Answer: That would be impossible. Replace the Air Filters. Sounds like it COULD be the contactor. The blinking snow flake where you found them and turn the thermostat ) the compressor motor. 240, give or take a few minutes to do this, and it ends! 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