Forum Discussion
j-d
May 13, 2015Explorer II
While you were up there, did you get pix of the Capacitors and the Wiring Diagram?
An A/C may have
As few as ONE,
Probably TWO, and
Likely THREE,
Capacitors.
Only a Compressor Run Capacitor
Compressor Run and Fan Run Capacitor (could be individual or a combined unit)
Two Run Capacitors plus a Start Assist
Start Assist is a Capacitor plus a device to get it OUT of circuit once the Compressor starts. Think of that as the starter in a car. The Key has to be released, from Start to Run when the engine starts. Compressors with Start Assist have to get that component off line to get into RUN mode.
I'd like to see Diagram AND a Pic of the actual capacitors because Start Assist can be an option that's shown on every Diagram but not installed in every Unit. You also need to get the specs from the Capacitor(s) if you plan to replace one. We've had enough capacitor trouble with out home A/C that I keep spares at the house. I also have spares and spare start assist for the RV A/C, based on the issues at home and several OP's here mentioning failures in their RV's.
You can replace a Combined Compressor + Fan RUN capacitor with two individual ones, replace two individuals with a Combined, use only one side of a Combined, etc. The capacitance (40-MFD as an example) and voltage (probably 440, maybe 370 and you can replace a 370 with a 440) are the two specs you need to match in replacement capacitors.
Your neighbor can explain safety in working with electrical components, and capacitors in specific.
An A/C may have
As few as ONE,
Probably TWO, and
Likely THREE,
Capacitors.
Only a Compressor Run Capacitor
Compressor Run and Fan Run Capacitor (could be individual or a combined unit)
Two Run Capacitors plus a Start Assist
Start Assist is a Capacitor plus a device to get it OUT of circuit once the Compressor starts. Think of that as the starter in a car. The Key has to be released, from Start to Run when the engine starts. Compressors with Start Assist have to get that component off line to get into RUN mode.
I'd like to see Diagram AND a Pic of the actual capacitors because Start Assist can be an option that's shown on every Diagram but not installed in every Unit. You also need to get the specs from the Capacitor(s) if you plan to replace one. We've had enough capacitor trouble with out home A/C that I keep spares at the house. I also have spares and spare start assist for the RV A/C, based on the issues at home and several OP's here mentioning failures in their RV's.
You can replace a Combined Compressor + Fan RUN capacitor with two individual ones, replace two individuals with a Combined, use only one side of a Combined, etc. The capacitance (40-MFD as an example) and voltage (probably 440, maybe 370 and you can replace a 370 with a 440) are the two specs you need to match in replacement capacitors.
Your neighbor can explain safety in working with electrical components, and capacitors in specific.
About Motorhome Group
38,706 PostsLatest Activity: Feb 01, 2025