RV Air Conditioner or Fan Won’t Start? DIY Easy Fix
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- Опубликовано: 6 май 2021
- Replacement Cap Links Below:
If you found this helpful, you can say 'Thank You Dan' by buying me a cup of coffee.
www.buymeacoffee.com/dtdw
Thanks SO MUCH!
Today I replaced the motor start and run capacitors on my trailers air conditioner. If your AC motor or fan won't turn on, or it won't stay on, the caps could be the problem. This is a relatively easy job. Here are the caps I used, and a few others you can select from:
Amazon Links:
All PowerWell Caps - geni.us/PowerWellCaps
5uF - geni.us/5uFcaps
7.5uF - geni.us/7_5uFcaps
45+7.5uF - geni.us/45and7_5uFcaps
105-126uF - geni.us/105-126uFcap
88-108uF + Resistor - geni.us/88-108uFcap
Let me know in the comments if you were able to do this repair yourself!
The links above are Amazon Associate affiliated which means that without costing you a dime, I get a few dimes when you use these links. 
Кино
Customer of mine who has owed a very reputable RV dealership for decades advised me long ago “clean AC coils AND drip pans every year. KEEP SPARE REPLACEMENT CAPACITORS IN RV/CAMPER. Not a matter of if they go bad, it’s when they go bad and it’s typically a hot holiday weekend adventure when they do.”
We replaced an old Dometic in our 36 foot camper (vented). ruclips.net/user/postUgkxDDbPbIlwLRcX_ntp51ui5UMtAUGpHYxE The install was a simple swap, all holes lined up, the electric plug back in with no trouble. Getting it on the camper was the most "difficult" part of it, and my friend made it look easy. I've seen people "sled" them up ladders as well though. I watched a RUclips video for instructions, very easily done. Some say it doesn't come with instructions, but I found the instructions under the ac in the box. I didn't need them, but they were there.It works well to keep a 36 footer comfortable, all by itself. It doesn't seem to be any quieter than the original, but it isn't any louder either. We're very pleased with it. Esp with the ease of swapping them out.
Thanks Dan! I owe you a cup of coffee if we ever meet. Great info. Great explanation! Found parts i needed. Camper AC back up and running. Time for a NASCAR race and maybe some dirt track racing!
Thanks! Glad this video was helpful for getting your AC running again. Did you replace all the caps?
This video was extremely helpful. I was able to follow the instructions and order the exact same parts based on the link. AC cranked right up, so we are good to go on our next camping trip. Thank you for taking the time to put this video together.
Thank you . This is the first video that shows exactly how each wire goes on the capacitors . Finally have my rv roof air working. Yeehaw 👍👌😊
Thank You Sir! Such a pleasure to watch someone do a very thorough and well detailed video! I have to help a neighbor on his RV, we're not sure if it's the CAP or fan motor, but this sure helps! Also you had very good parenting and schooling!
Outstanding video, absolutely no nonsense and no bad info. Thank you!
found this really useful. showed us exactly what the problem was. thank you so much
Found your video & Eureka! Got my RV Main unit back running again for less than $50. Thanks for making this
Awesome! What wasn't working, and parts did you replace?
@DansWay we have a 50amp Jayco travel trailer. Main A/C had stopped working & it was no fuse or Breakers. Found your video & went on the roof and opened up the unit. Replaced both the capacitors (not sure which one it could be). A/C is working again. Nice & Cold
This was so useful. Easily the best video on capacitor replacement I've been able to find. Great video. Great hair
Thanks! Glad it was helpful. Did you get yours done?
I agree
💯
Thank you! I was just dealing with this issue today, I was leery of touching the screw driver to the cap while everything was still connected. You showed it doesn’t matter if the wires are still connected.
Thank you so much for this video!! I can't imagine how much this would cost if I had to take it to the repair shop. It was so easy.
Hey Donna, I'm so proud of you for taking this on! Great job. I LOVE saving money trying to do things myself, and appreciate your commenting back. Be blessed!
Thank you, this fixed the AC problem in my wife's RV office.
Awesome Todd, great job and thanks for commenting!
Best free school video for Caps on an RV/Trailer. Thank you so much for this!
Wow, thanks! Glad it was helpful. Did you get this done on yours?
@@DansWay we sure did! We found out our cap AND the control board were bad. After replacing both the AC kicked right on!
Awesome! Thanks for responding back with the update. Have a good one!
Thank you for this! Thank you for showing how to do it and explaining it thoroughly.
Your very welcome. Did you get yours working?
@@DansWay I have ordered the parts and hopefully will have it back working by end of the week. I had no clue where to start and definitely wouldn’t have known where/what to order.
Thank you for sharing your knowledge, very helpful.
Thank you. Our fan just stopped working. Once we’re home I’m going to swap out the capacitors. Fingers crossed.
Thanks! Just changed out my Dometic motor capacitor and we have our A/C back. You are right…easy peasy!!
Awesome Job! Glad it worked out for you. Did you replace all the caps, or just the compressor motor cap?
Replaced just the motor cap. Had the other cap too, but decided to save it since it was still working.
@@free.2B now you know how to get in there so it will be a quick swap. For me the compressor ran SO MUCH better after replacing the cap. It wasn’t chugging when the voltage was low, and the startup was snappy and quick vs. struggling to get up to speed.
Thank you I like the way you explained everything to appoint quick too bad all the videos were like great job
I’m taking your advise and replacing my 2 caps. Fan wouldn’t come on. Your Amazon links helped me find ones I could get the next day with minimal effort. Super good advise.
Glad it worked out for you! Thanks for the feedback. Let us know how it turns out when you get it all installed.
@@DansWay I’ll let you know. Have a desert trip for super bowl. I ordered 2 of each just in case lol
Thank you, have the exact same setup and the exact same problem. Will be attacking the job soon. Thanks again
Let me know how it goes!
and you be blessed also. Great video and spot on. Thank You !!!
Nice video! Thanks for your time and sharing! 👍😎✌️
Thanks for the comment! Did you perform this on your AC?
Nicely done! Thank you!
Thanks for the details
Hi Dan, thank you for your awesome Video.
Glad you liked it! Did this help you with yours?
Great video, thanks!
Thanks for a great video. It looks like what I need to do. I ran mine hard last year during the record heat wave and I went to test it this year and the fan doesn't kick on anymore. I would guess it is the start capacitor. I'll have to take a gander.
Yah, me too... Let me know how it turns out!
Thank you so much. Saved me some money!
Glad this was helpful! What did you end up replacing? What didn't work?
Thank you for the information!
Your very welcome! Did it work for you?
Great video. Really helped me out. ❤
Glad it was helpful! Did you replace all the caps?
Yes I did
Great video well done thank you!
Your very welcome! We’re you able to do this as well?
Thanks for the video! You said replace the pzt if your having startup issues. What is that?
Excellent video
Thanks for the comment!
Thanks Dan owe you a cupmof coffee. Exactly what was wrong with my A/C. I was worried that a motor or new unit was needed
Great, I'm glad this was what you needed. Have a cool summer!
Wanted to say thank you so very much for this amazing informative video regarding these capacitors. Of course, I am sure it goes without saying today was the day to turn on my A/C in my RV and wella it produced the dreadful hummmmmm. Turned it off right away, went to "You Tube University" where I have obtained my PHD due to living full time in my RV and found your channel. Subscribed, used your links to order the caps Yep you guessed it all 3 of them, however since you did your video a year ago 2 of the 3 needed are not available so I had to buy different brands to obtain same ratings. Once again thank you, parts arrive tomorrow, AC on tomorrow evening:))))
Awesome! Thanks for the comments. Let me know how it turns out once you get the caps swapped out.
@@DansWay Good Afternoon Dan, Well here I am finally a week later! I installed the new caps all three of them (so happy I followed your advise and bought all three, they were in really bad shape) turned the unit on and holy crap it was loud. Went back to You Tube University found a few excellent videos regarding my next problem bad fan motor. Just ordered the part, it will arrive next week I will get it installed and let you know how it goes. Thanks again for the video. Excellent and informative, Enjoy, Elizabeth
@@DansWay Hi Dan, Well thanks to your channel and the guy on RV Foodies regarding the motor replacement I am back in business with my A/C. Got the new motor got it insatlled today and just completed the prelim testing of the A/C and it is working. It is late so I will begin using my A/C this week and hopefully everything continues to function properly. Thanks so very much once again Enjoy, Elizabeth
@@elizabethjames3440 Hey Elizabeth, so glad to hear back from you! I'm glad you finally have this working, and in time for this summer as well. Enjoy the cool!
Great Video - thx
Did you have this problem with your AC?
Thank you very helpful
Glad it was! Did you get your parts replaced, or are you going to soon? Let us know how it turns out!
Thank you so much
You are very welcome!
Do you have any videos diagnosing an RV AC that made a terrible sound and the quit?
Thank you!
You're welcome!
Would I have to open the unit to see exactly what size and model I need or could I find it with the year , make & model ?
Great video btw thanx
You could try to get the wiring diagram for the exact model which should be enough info. Just be sure to purchase high voltage caps, 370v or 240v if possible, assuming this is a 120v system.
Thanks
I'm glad it was helpful. Did you get your caps replaced?
Thanks I just urged on the ac and no fan going to grab some caps Many Blessings
Let us know how it turns out!
@@DansWay lubed up the fan because it was like froze up and whamo now runs like a champ however I now have detailed pics of the components thanks Dan
@@JunkFam1 Ok, cool. I have seen fans get 'stuck' after a season of being unused. Like the bearings get frozen in place. Just nudging the fan a couple of turns sometimes is enough to get it moving again for the whole season.
Great instructional video.
Could you offer a replacement suggestion for the following capacitor:
C65R. 60uf ±5% 370VAC.
I didn't find a suitable replacement in PowerWell Capacitors.
I would suggest you try this one. It has both the 60uF and a 5uF tap. You can ignore the 5uF tap, just use the 'COM' terminal and the terminal not labeled 'FAN' (likely it will say 'herm').
@@DansWay perfect.
Appreciate the extra information and advice.
Your video was stellar for helping us diagnose! THANK YOU! However, I'm having trouble finding a 45/12uf/370 capacitor for our 2005 Carrier A/C. (Yes, ancient, but up until a few weeks ago, it was running like a champ! Now it hums, but the fan won't kick over.) Capacitors are much cheaper than a whole new unit, so wondering how we go about replacing this. We opened her up and discovered the capacitor is a combo, so it has the three ports on top. The closest replacement I found on Amazon was a 45/10. Will that suffice? Any thoughts or help would be appreciated! Thanks!
Glad you found this helpful. You could likely get away with the 10uF vs. 12uF. You can also try splitting it up into two different caps if that helps you get the correct sizes.
@@DansWay - Thanks so much for the reply! Sorry, but I don't know anything about the electrical numbers side of things. How would I split this up into two different caps?
@@the2youngs you can get a 45uF cap and a 12uF cap. The wires going to the COM or common terminal of the existing capacitor would be split between the two new caps. The pairs of wires 'should' make it obvious which wires go to each cap. The motor-start for motor-run functions for example. I would start with the 45/10uF cap you found and if it works, then your done.
Exelent😃
Great video. Only one questions, maybe all you needed was the fan capacitor? I will have to look up directions on how to diagnose the fan capacitor. My Rockford 5th Wheel has same ac unit. My ac will not start until I go up on roof and spin the fan. Then compressor comes on and life is good. But when the temp is reached and AC turns off I have to repeat the process. I'm thinking in my case all I need is the fan capacitor but without knowing how to diagnose each individual piece It's a crap shoot.
You are correct, the fan capacitor is very likely the culprit in your case. My suggestion, however is that if your air conditioner is more than five years old, you could go ahead and replace all the capacitors while you have it all apart. I found the compressor ran substantially smoother, and start up was, much better as well after replacing the compressor motor caps when I did. The ‘Chugging’ sound went away completely.
Sir, i was looking to achieve this procedure...can you tell me what are the parts number for run and start and fan competitors so i can order them from Amazon....thanks
David
You will need to unplug, then disassemble your AC to read the values off the capacitors. Let me know when you have those values.
I think I need to switch mine out. Since we got ours, the compressor during startup will start up when it wants. Now last fall I had to keep spinning the fan. Now today I had to spin the fan but then after about 10 minutes the fan would shut down. Leaving the compressor running.
Definitely time to replace them all. You will be amazed at how smoothly the compressor kicks on with new start and run caps.
Dan, great video. I have a year 2000 motorhome with Dometic reverse cycle a/c and my forward unit's fan will only operate on high. The a/c or heat works but the fan will not come on in low or auto but only high. These units are using the old 4 button controller. Would you think this is a capacitor issue or something else? Many thanks!
If you start it on high then switch to low, does it completely stop or sorta slow down making noise? If it just stops dead it sounds more like an electrical issue, like a broken wire or bad relay in the controller. Doesn’t hurt to replace caps on the motor and compressor after 20 years. I found that my compressor runs and starts much more smoothly after replacement, and that wasn’t why I was up there.
@@DansWay Thanks for the reply. Starting on high and then switching doesn't do anything for it will immediately kill the fan. One person I spoke with seems to think that it's the control board gone bad but I don't know ....... what is your opinion on that?
@@bobgodfrey9524 sounds like a bad controller, but could still be wiring to the controller on the wall thermostat. Does the compressor continue to run, or does the whole thing shut down? Not sure if that info would be helpful. Definitely need to get a meter on the control board to see what’s going on.
@@DansWay Yes, compressor still runs but of course I'm concerned about damaging it if the fan isn't on. Fan does nothing in auto or low setting but everything works fine in high fan setting.
@@bobgodfrey9524 I am having this same issue with mine at the moment did you ever get it fixed? I can hear the compressor and it turns on but my fan doesn’t spin anymore. Like yours mine used to only work on high and when put on low would sound a little squeaky like the fan was having trouble getting a push. Everything turns on still but the fam doesn’t spin even with a manual push. Tia
I have what appears to be the same AC. The capacitors are good. The fan spins freely by hand. Neither the fan nor the compressor starts or makes any noise. The breaker is closed. There is voltage at the capacitors. Do you know if there is a reset button somewhere? or any other thoughts? Thank you!
Did you figure this out yet? Sounds like the thermostat itself is t working properly. I would start there. You can manually connect the wires together to trigger the fan or compressor.
@@DansWay There is no typical thermostat. It has 2 dials. 1 is rotated to turn to 4 selections, off, fan, low cool, high cool. With it turned off there is no voltage where the capacitors are. With it turned to fan, or low cool, or high cool, it is live where the capacitor wires are. The other dial is rotated to set cool, min to max. As it is rotated I can see the voltage output increase. at the wires plugged into the back of the dial.
@@DansWay my mothers airxcel 48000 was working last night but just shut off this morning and won't turn back on. Checked the breaker it's not flipped, fuse seems to be in tact. Not sure what's going on. 😕
Best
Thanks. I hope it was helpful.
Here’s my situation. The ac first started with an issue working just in fan and not on auto. I cleaned it well, vacuumed and worked well for about a month. Then started failing again, it would stop while running, like if it wasn’t getting enough power, or like when a camel is lose and doesn’t make good contact. I cleaned it again and this time I washed it as best as I could. It worked fine for a day, but today it started doing the same thing. Starts then loses power and goes off.
Do you think that’s the capacitor related issue?
Definitely worth a try! Those are some strange symptoms.
Hi Dan, you mentioned "if you have compressor start up issues, replace the pzt as well". Can you please specify what is the pzt? My rooftop coleman mach ac will make a buzzzing/humming noise but cant seem to kick on fully. I am about to purchase the run and start capacitors but not sure if I need to replace pzt? (what exactly is this?) Thanks for your help!!
The PZT is the small box connected to the top of one of the caps. Not likely to be the problem. I'd just start with the caps and see if it comes alive for you.
Awesome ! Got it ! I try the caps first and resort to replacing the “pzt” if the issue persists . Thanks for responding so quickly I appreciate it!
Awesome ! Ok got it ! I will try the caps first and resort to replacing the “pzt” should the issue persist. I appreciate your quick response . I will let you know if this works for me, thanks for the info and support
Hello Dan ,
So I successfully replaced all 3 caps but my unit still won’t fully turn on, I’m still hearing a buzzing/humming noise when I try to run the fan or AC on low or high. I did see you manually push you fan blades and it seemed to rotate smoothly on its on after your initial assistance. When I tried replicating that to my fan , I feel immediate resistance. Do you have any recommendations?
@@mrcperea13 If you are saying the fan doesn't smoothly spin, then your fan bearings are likely shot. It should easily spin by hand.
Having a puzzling issue and hoping what I've ordered will work. But I have a Emerson quiet Kool system, it's 3 speed and from the 90s. First issue was motor would hum and not spin when on, had the start capacitor fail. Ordered one, but it had the wrong MFD (higher than what it came with) but installed anyway. AC worked for about a month. Issue reoccured suddenly, motor was running and then stopped (same issue as before). Replaced start capacitor with proper one, didn't work. Compressor turns on no issue, just the fan motor doesn't. I've now ordered the run capacitor and the relay, think that'll do it?
Oh man, not sure if the motor could be damaged by the wrong cap or not... Did you get it working with the replacement parts?
@@DansWay nope, replaced both capacitors and the relay. Same issue. The motor is not easily obtainable so went with a window unit for now
@@DylanDr1pDr0pWilhelmi ah man... sorry it didn't come back to life for you!
when im using gen power and my ac kicks in my surge protector gives a reverse polarity code. when the fan kicks off the code goes away. any idea how to trace to the problem? thank you
Good question. What brand/model of surge protector are you using? Could be a grounding issue...
Dear Dan, I have the same ac unit as you, I would like to know when using a dual run capacitor, the Brown and Brown/ White wires for the fan motor will connect to which terminal’s on the capacitor?
How are the terminals labeled or marked on your capacitor?
@@DansWay Fan, C, Herm.
C is the common point between the two caps. Herm goes to the compressor, fan to fan. This only works if the fan and compressor have the same common point.
@@DansWay Brown to Fan, Brown/White to C= Common, Thanks!
When we first bought our 5th wheel we noticed that nothing other than the fan would turn on. You had to turn it to cold and basically walk away. I understand these things have a delay but my times ranged from instant to up to 30 minutes before the compressor would start. Haven't fixed that yet but now last year the fan started acting up. Acting like it wasn't getting enough power, I had to take the inside cover off and give it a spin and then it would take off an go.
Fast forward to now. Still have to give the fan a good spin before it takes off and goes but then after about 10 minutes the fan shuts down. I believe I still hear the compressor running.
Is that something to do with the run capacitors? I bought all 3. Going to change them out tomorrow. I just keep thinking maybe the fan itself is bad and drawing too much and something shuts it down.
YES! These are all the symptoms of the run and start capacitors failing. Let me know how it works after replacing them. I can't explain the 30-minute startup time, but perhaps that will change as well. If you still have the 30-minute delay, check to see if the thermostat is giving a proper signal to engage the AC.
@@DansWay When we first got it you could hear something up top I think click. I was always able to turn the fan on and off. Auto it would only turn on when the comp fired up. Just did it whenever it felt like it but always would finally go. But now last fall and this summer I'm having this issue with the fan. Last fall I got it going by giving it a spin and it would run all day. This year when trying that, everything shuts down after 10 minutes or so and locks itself out. Have to wait about 5 to 10 minutes before the fan starts humming again. Give it a spin and it would take off. 5 to 10 minutes it will trip again. So far been hearing the fan drawing too much power, low volts, or bad capacitors. Guess we will find out tomorrow morning.
Had everything going several times Friday night. Now today the compressor wouldn't start again. Finally bypassed the thermostat and it fired right up. This whole time it's been nothing but a bad thermostat minus the actual fan problem. That was definitely a capacitor.
Ah man! Well I’m glad you now know the root cause.
What brand/model is this AC unit? I have a Dometic Brisk Air duo therm. It looks very similar to the one in this video. Just wondering if I can go ahead and order these caps without climbing up on the roof first.
Honestly I wouldn’t chance it. If you don’t get the right ones, then you will have to go up again and deal with returning the wrong ones.
@@DansWay Good call.
@@DansWay My AC only has 1 capacitor, 45/5. My AC is doing the same thing yours, in this video, is doing. Compressor kicks on, Dan does not. With only 1 capacitor, do you still think it could be that? It stopped working after a power surge from my generator.
@@andrew-5077 Strange... I would think the fan would need a cap. Any chance there is a cap cover mounted to the motor itself? Follow the wires back. Also, check that there is voltage getting to the fan at all. If not, the problem could be a damaged/disconnected thermostat wire. Worst case it is the controller circuit board inside the AC unit.
So on mine all I hear is pound humm the fan feels free but does not spin ..it spins with my hand but no go
Is it the same for a Class A motorhome? Also are they compatible with any A/C brand or are the parts brand specific?
Generally speaking every fan motor and compressor will have motor start/run capacitors. Even central air conditioning in your home will have these components. The location however will be different depending on your AC type...
@@DansWay thank you. So the ones on your links are interchangeable with any RV ac unit or are they brand specific? I have a Coleman Mach unit
@@johndalton9484 The brand isn't important really. It is the voltage rating and value (in MFD) of the cap that matters. You will need to get into yours to read the specs and match them. I have links to a number of these on Amazon, but you can find a lot more there.
Where are the links lol and thanks for this video I pray this works for mine🥵🥵
Hey Josh, take a look at the description of this video for the links.
@@DansWay thanks Dan your the Man I found it and I've replaced my fan capacitor but not my starter capacitor so I'm praying that's all it is wife's on the way to get part so I'll know for sure shortly, once again thank you so much 🤘
When the Coleman mach when it run does good but when it stop hot air come back Thur vent what caused that 3 years old
How can u tell if it's a thermostat what the sign
What kind do I need for a dometic 2015 r-pod 179 please.
May need a capacitor not sure.
Where can I find link for purchase. TIA
The description of this video includes a number of links to common caps. From there you can look closely for a match to the size and voltage you need.
So, the capacitor on mine "should" look the same as the one with the VR. VR is literally toast, lol! My question is, mine says 43-52 MFD. Is it going to make a big difference on the MFD numbers if I replace it with the linked combo?
Also, the link description states that it only works for Coleman AC, did they buy duo therm maybe?
Hey Eric, You definitely need the numbers to be in the same range (don't go 35 or 60MFD). You can use combined or separate as long as the values are a close match.
@@DansWay I actually found the direct replacement with the thermistor in a kit on Amazon. Found the parts manual and used the manufacturer part number for the search criteria. Capacitor P/N 3106732.005 per their parts list. I will try to link it here if I can figure out how. The cost is $50.98.
@@ericbrack4546 is it this one? amzn.to/3xyE6cQ I couldn't find one as expensive as $50.98
@@ericbrack4546 you can email me the link at dtdw@danholt.net if that is easier.
No, that's not it, just saw this while rewatching to make sure I didn't miss anything 🤣. I'll find it and send to your email. Thanks for your help and patience with this.
I have a resistor melted downs I can't read the info on it . to replace it what do I need to replace it with ??? info to get one ??
This is a temperature sensitive resistor like the one on the following link: geni.us/88-108uFcap It is labeled "WSX-5ACM". You can buy the capacitor and resistor as a kit in the link, or ones like it. I would also ask the question however, why didn't the motor start up? After replacing the cap and resistor be sure there is no other reason (bad compressor) that it burned up in the first place.
@@DansWay the run cap is at 25 uf the resistor is burnt up..can I buy buy a resistor seppret order parts all but that,??
What about if the ac unit won't star even if your capacitors are good? Is there other things that could be bad
The breaker was replaced by a new one cause it burned
Next items to check is the thermostat, and finally the controller. Be sure the controller is sending the signal to turn on.
@@victordominguez4448 oh, that could be another problem, jammed, stuck compressor? If it keeps blowing, you could have a loose wire as well.
What if it's the opposite were the fan works but compressor only hums? Mine has the same run and start capacitor.
Likely the compressor caps. Replace them both (all while you are in there) and it will likely start right up.
@@DansWay I tested the start capacitor and it read 170mfd. Higher than rated 88-108mfd. The run capacitor tested within the correct range
Very strange that it is so high. I would change that one out.
I replaced the smaller of the 2 capacitors and the fan still won't work. Could it be the larger capacitor??
The AC compressor makes a humming sound but no fan.
Try following the wires back to the fan. There should only be one cap connected between the two fan wires. Check for power on those leads to be sure your system is even sending power to the fan. Does the fan spin freely?
@@DansWay yes, there is power to the fan wires at the capacitor and the fan spins freely.
I went ahead and ordered the large capacitor also.
What number is the little square after the capacitor? Because on my I can't see the numbers
Hey Ruben, at 5:05 you can read the label which says WSX-5ACM Motor Start.
Thank you for your help. Is very helpful video thanks again
So our ac is not blowing out cold air but sounds like the fan is on. What could be the problem or idea of problems?
Could be a lot of things. Bad Compressor, bad thermostat or wiring, bad run capacitor... Does it make any compressor sounds at all? You will need to check the compressor to confirm it is receiving voltage. If so, then the cap could be problem.
@@DansWay hi! No the compressor isn’t coming on at all and we changed out both capacitors and still the same. We had a rv repair guy come out yesterday and he said we have to replace the whole ac unit on top of the rv..so that is sad news because it’s expensive and we were hoping it was just the compressor or something easily replaceable.
Oh man, so sorry it was dead! That is an expensive repair for sure. At least you now know the next step.
I replaced all three capacitors. Specs of the new ones: 7.5 MFD 6% 370V, 45/5 MFD 6% 370V, and a 88-108 MFD 165 V. I did not replace the resistor. AC started up great after replacing capacitors. Left it running. Went back to check it and it was not blowing, just humming. Turned it off. (Two knobs on unit, no external thermostat) Tried to turn it back on and no fan. Just the hum. What should I do next? Thanks for the help!
Wow, seems like the motor cap is bad again. Could that be the case?
@@DansWay haha I have no idea. What would you recommend I do to figure that out? And which one of these is the motor capacitor? And any idea what would make that happen again so quickly?
You’ll want to follow the wires that go to the fan back to the wiring area. There you’ll see that one of them is going straight to a cap, or is indirectly connected to it. That is the one to replace.
@@DansWay right on. I’ll check it out & report back. Thanks
@@DansWay so it looks like it is the fan capacitor. I’ve ordered another one. I have a question though. The bigger capacitor that I bought to replace the 1499-573 45 uf capacitor, the new one has the three tabs like yours in the video. One of them is labeled fan. It only has one tab though for connection. Could I somehow wire the brown wire and brown with white stripe wire from the non working fan capacitor up to this one?
Our fan is working the air won't blow cold and we already changed capacitor and wires and it's not working still tripping breaker
Oh wow, well... Sounds like the compressor might be shot. Time to get it professionally serviced or replaced sad to say!
That's what it looks like
The air is coming out of the return and not the supply. What do I do?
Oh wow, not sure how that is possible. Perhaps the start capacitor is bad so it starts up backwards? Crazy... Did it used to work normally? If so, I'd replace the caps and see if that changes things. Amazon has a good return policy!
I replaced the caps but my fan will not start by it’s self. I help it, all works. Any ideas?
Does it start if you spin it manually at first? If so, does the fan move freely?
@@DansWay yes, if I spin it works great! The fan spins freely no binding.
@@TheOfficialWickedOne Ok, does it spin up to full speed if you give it a push start, or is it totally dead?
@@DansWay works as it should from the factory. When I turn on the unit I get a humm. If I literally breath on the fan it starts, runs properly until the ac reaches desired temp. Then will not start again unless I spin the fan. The fan is not hard to turn. Bearings feel good. The shaft of the motor has been lubed. I appreciate the help.
And yes spins at full speed
How much did this all cost?
The caps were not very expensive. It will depend on the exact caps your system needs. For me it was about $45.
@@DansWay I NEED HELP!
@@lucycabral3235 what is the problem there?
Still not kicking on after replacement?
Ah man... That's not good... Could be the compressor really is done. Sorry!
My Duo therm only had the two capacitors, it is not kicking on. Is there any way to check to see if the compressor is done? Thank you
Great video! May I have a chance to contact you?
What is your question? What topic?
@@DansWay Thank you for your reply. I hope to cooperate with you. I am the manager of Auxito.com. I really like your video. If you can, would you please tell me your email?
@@jennieauxito8108 you can email me at maps1@danholt.net
@@DansWay Thank you!
Brand new trailer ac defective.
I’ve replaced everything and still nothing. Why.
What is it doing now? Any noise, movement, etc? Could it be that the compressor failed?
Does the fan spin and just not the compressor?
@@DansWay thank you for your response. Everything is new. Lol 😂.
@@DansWay it makes no noise or even hum! It’s just dead. It’s unbelievable. I have power, check it with multimeter at all power lines and unit.
I’d start with the controller. Could just not be sending the right signals..? One or the other should work or at least try…
Dan please help if you can
How?
That's what she said lol
Need help
What's going on Hector?
@@DansWay I'm having trouble looking for this item.
1499-566 9802 MRP258790
250F 370W 50-60HZ 70C
AEROMET II M233725M02
I don't know what to do.
I managed to replace the other two except this. Should I go higher or keep searching for this?
thanks, but they are CAPACITORS...... not "CAPS"
CAPS is very common slang for capacitors