Forum Discussion
C_Schomer
Aug 09, 2014Explorer
I've never had much love for those band aid fix PTC/cap kits. I've tried them since the 70s when they first appeared. They are fine if a system is flawless or only has a VERY minor problem with starting. I had a customer in the 70s and their 3T home AC kept blowing fuses. Most of those old houses didn't have the service for add-on AC so they got put in with minimal sized circuits. This one only had the run cap and the system wasn't fully equalizing before the next stat call for cooling. I put on a PTC/start cap kits and watched the gauges. The pressures had to be within 20psi or that kit still wouldn't start the compressor. I called the compressor mfgr and they had pt. #s for a real hard start kit w/potential relay. I put those mfgr designed/approved parts on that compressor and it would immediately restart after a shutdown even with 175psi differential and not blow the fuses. To make the rest of the story short... I always check with the compressor mfgr for the correct hard start parts first cuz they are by far the best. A lot of compressors don't have any mfgr approved hard start parts. I've tried to find better start parts for RV ACs and hit a dead end. The oem ptc/cap is all there is. If a bigger one works.. more power to you and your compressor. Craig
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