I've got 2 RV ac units I'm going to replace the capacitors on this week. Your comments about them fully self-discharging is a relief, I hate working on electrical things. Been shocked too many times.
If you want to test under load, use your meter in amps and clamp on herm. Take reading and multiply it by 2652, now use meter and take voltage between common and herm. Take number and divide by voltage will tell ya how much juice she got left! Cheers
I have a roof top ac unit in my camper. I'm going to attach a video of the unit trying to start, can you tell me just by listening if I need the start capacitor or the other one?
Sounds like the fan motor is going out. You can spray wd40 on the base of the shaft towards the motor, (just a few good squirts) then spin it by hand some, and it might buy you a little more time. But a motor replacement is probably needed. These motors are not strong and the least bit of grime or wear can make them do that. Always make sure electricity is completely disconnected before working on it. And make sure you get correct fan motor if you replace it. I'm sure you can find videos on your particular model.
So if I need a capacitor and mine is oval and I found one at ace hardware thats the same 50/5 but round will it still work ok. Sorry stupid question.... This is the beginning of our camping so we are super nervous
My Dometic currently has a 40/15 dual start capacitor. Can i sub it for a 50/15? 40/15 is super hard to find and 100 times more expensive so just wondering.
Can you? Yes. However it is 5% over the rated tolerance so don't be surprised if you experience a malfunction down the road. You likely will not for a very long time. That being said, in my professional opinion it is always best to utilize the correct parts as they were engineered for optimization.
Question when there are some wires that look a little burnt should i cut wire back some and replace the ? Spade? Also on air box there is very minimal brown look on 2 of the 6 connectors. I dont have a meter to check anything but i do know the compressor tries to "kick" but doesnt fully kick in. But got a new capacitor gonna replace and hope thats all it is. Please let me know about burnt wires! Thanks
Yes, greatly. Get one with the same ratings in farads and voltage as the old one if you can't find an exact replacement. I think most motors also list what size capacitor is needed.
I've got 2 RV ac units I'm going to replace the capacitors on this week. Your comments about them fully self-discharging is a relief, I hate working on electrical things. Been shocked too many times.
Good video, now I have to see if my meter can measure capacitance. Keep the good stuff coming.
If you want to test under load, use your meter in amps and clamp on herm. Take reading and multiply it by 2652, now use meter and take voltage between common and herm. Take number and divide by voltage will tell ya how much juice she got left! Cheers
Awesome video. Excellent explanation of how to use your Muilti meter
Glad it was helpful!
Thank you.
You are welcome
I could absolutely use your help with my campers ac unit. If possible, thank you. Amanda
What's up?
I have a roof top ac unit in my camper. I'm going to attach a video of the unit trying to start, can you tell me just by listening if I need the start capacitor or the other one?
@amandabuttsdubose9480 i am having this same problem and it is a humming noise, thats all it does when i turn it on.
Sounds like the fan motor is going out. You can spray wd40 on the base of the shaft towards the motor, (just a few good squirts) then spin it by hand some, and it might buy you a little more time. But a motor replacement is probably needed. These motors are not strong and the least bit of grime or wear can make them do that. Always make sure electricity is completely disconnected before working on it. And make sure you get correct fan motor if you replace it. I'm sure you can find videos on your particular model.
So if I need a capacitor and mine is oval and I found one at ace hardware thats the same 50/5 but round will it still work ok. Sorry stupid question.... This is the beginning of our camping so we are super nervous
Yes will be fine
My Dometic currently has a 40/15 dual start capacitor. Can i sub it for a 50/15? 40/15 is super hard to find and 100 times more expensive so just wondering.
Can you? Yes. However it is 5% over the rated tolerance so don't be surprised if you experience a malfunction down the road. You likely will not for a very long time. That being said, in my professional opinion it is always best to utilize the correct parts as they were engineered for optimization.
Question when there are some wires that look a little burnt should i cut wire back some and replace the ? Spade? Also on air box there is very minimal brown look on 2 of the 6 connectors. I dont have a meter to check anything but i do know the compressor tries to "kick" but doesnt fully kick in. But got a new capacitor gonna replace and hope thats all it is. Please let me know about burnt wires! Thanks
Also the one in unit is 60 +10 but when I look online it shows 50 +5??? Duotherm b59516.711c0
Yes clean up the wiring and install new spade connectors.
How to read a capacitor with a metre
Does it matter what size compacitor I replace one with?
Yes, absolutely voltage and micro farrads must be correct.
¿Can the testing be done while capacitor in still in circuit?
No
How do I know what size compacitor I need?
It is listed on the side label of the bad one.
Does it matter what size compacitor I replace one with?
Yes, greatly. Get one with the same ratings in farads and voltage as the old one if you can't find an exact replacement. I think most motors also list what size capacitor is needed.