Howdy–

Well, you're probably looking at the run cap.  It'll have three connections on top, one labeled HERM, one fan, one common.  It'll be something like 35-5 or 45-5 or something.  You need a good run capacitor, to run your A/C.  You can also add a start capacitor, especially for hard-starting compressors or to assist where voltages/amps are questionable.  You only need the start cap for the compressor, not the fan.

Melted or damaged plugs should be repaired now.  They only get worse with time.  Poor connections cause resistance, resistance causes heat, heat causes fires.  This is bad.  You need to either repair this yourself or get an electrician to repair it.  If the plug is bad, you could be getting improper voltages to your trailer & A/C unit.  This could be the source of your whole A/C problem, and could also toast other expensive stuff that you like.

I wouldn't fix anything else right now except the male & female plugs.  If doing it yourself, be sure to strip the wiring back to where no discoloration or damage is.  And buy high quality replacement plugs.

Good luck, and before you do electrical repairs, and you are not sure, ask an electrician.  Wiring must be done right, to be safe.  And, when wiring, I never have a beer until the job is done.

daveinwa said:

Howdy–

…Melted or damaged plugs should be repaired now.  They only get worse with time.  Poor connections cause resistance, resistance causes heat, heat causes fires.  This is bad.  You need to either repair this yourself or get an electrician to repair it.  If the plug is bad, you could be getting improper voltages to your trailer & A/C unit.  This could be the source of your whole A/C problem, and could also toast other expensive stuff that you like.

I wouldn't fix anything else right now except the male & female plugs.  If doing it yourself, be sure to strip the wiring back to where no discoloration or damage is.  And buy high quality replacement plugs

Good luck, and before you do electrical repairs, and you are not sure, ask an electrician.  Wiring must be done right, to be safe.  And, when wiring, I never have a beer until the job is done.

My compliments - you're absolute right!

Here is a bit more info - it's just good to know

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A/C  start-up problem…

 

• Wait at least 3 min before restarting the A/C (after a shut down). The high side of your system could be at more than 200PSI, the compressor is unable to start with this high pressure. In a short time, the pressure equalizes to the low side and the A/C is ready to working again.
• Run the fan on High speed for about 3 min. before starting the A/C. This will lower the pressure on the high side on hot days.
• Start the A/C on LOW-cool and let it running for about 3 min. before switch to Hi-cool.
  
  
• Install a hard start like the SPP6 to ease the start up of the compressor. A hard start is just an additional capacitor used on the start. As soon as the compressor runs – the hard start-circuit will disconnect the start capacitor.

 

 

If your compressor does hum when starting, please don’t try it again over and over, or you will loose the compressor. Please seek professional help, it’s cheaper than a new comp (some 800 to 1200 dollars…)

 

Y’all take care, have a nice day – walter and dianne

 

Yesterday I didn’t even know how to spell engineer, today I am already one…