Duotherm capacitors

[Jordklein]

Duotherm AC on my 07 Monaco diplomat periodically burns the capacitors. It is usually the start capacitor which is bad but I change both since I have had the start capacitor go out shortly when I didn't change both. This usually happens when it's very hot the heat pump is running a lot. Why is this happening and is there a solution? We are full-time and this occurs about twice a year.

[Ivylog]

In 14 years and three heat pumps/ACs on my 04 Dynasty I never replaced a single capacitor so 2/year is not right. I would think low voltage...110 or less would MAYBE be the cause. Are you using the correct uF capacitor?

[RamiDav]

I think Ivylog is probably correct .


Take a look here Capacitor Keeps Going Out - Residential HVAC Forum - HVACSite


Google air cond capacitor keeps going out and read a lot more .


They are probably sell you cheap junk capacitors .


Ray

[hypoxia]

Originally Posted by RamiDav

They are probably sell you cheap junk capacitors .

Buy MARS capacitors and you won't be disappointed.https://www.marsdelivers.com/products/94/Capacitors/

[96 Wideglide]

Originally Posted by Ivylog

In 14 years and three heat pumps/ACs on my 04 Dynasty I never replaced a single capacitor so 2/year is not right. I would think low voltage...110 or less would MAYBE be the cause. Are you using the correct uF capacitor?

Yeah, I don't know.
The only one I've smoked was hooked up at home, with clean power (no low voltage) !

[MSHappyCampers]

Hi ! Welcome to IRV2! We're sure glad you joined the gang!

I've never heard of that.

Good luck, happy trails, and God bless!

[vito.a]

I think hypoxia may be correct. The capacitor stores electricity and then discharges during startup. A better quality capacitor should be able to survive.

Also, try to monitor voltage at the heat pump during startup.

[bigjim8499]

I had a issue with a Coleman a/c years ago.had 2 go bad in about 2weeks Coleman C/S said to go to another park. LOW VOLTAGE.
jimE
06 exec

[RamiDav]

Low or high volts are a couple of reasons why I think all of us
should have a Progressive Ind HW50C sys .


I am convinced it is the best elect protection device available .
It samples the elect before allowing elect to enter the coach .


It samples that the common ( white ) is present ( very important ) ,and
for low or hi volts plus protects against lightening surges .


All this is displayed on a remote screen you mount where ever you want .
I have mine mounted where my elect cord is stored .


Ray


https://www.gosale.com/5858326/progr...dustries-hw50c