Chosen Solution
Hi I have a commercial coolroom refrigeration unit that is overloading my start capacitor and blowing it up. As far as I understand it, the start capacitor should only automatically cut in for 1-2 seconds at start up, however it appears the circuit is not cutting off the the start capacitor but rather continuing to draw from it until it overheats and explodes about a minute later. I can manually disconnect the start capacitor after the unit starts up, but as the unit is temperature and pressure controlled, it is impractical for me to try and be there to manually disconnect the start capacitor every 10 min or so when it turns on. Is anyone familiar with this issue and the circuit that controls it? The alternative is to replace the whole compressor at $2000 as the controlling circuit is apparently attached or built in to the compressor unit. Maybe just me, but I feel replacing the compressor for a faulty circuit is a little excessive. The unit is a Hermetique CAJ2464Z and the start capacitor is 88 microfarads, and we are running on 240v down under. Alternative creative solution is to buy or make a circuit or auto cutout switch that can be installed in line to circumvent the fault. Any relevant technical feedback or recommendation on a suitable auto cutout switch is greatly appreciated.
@fixn the proper way to wire your compressor is detailed in the diagram. Let us know if that is how yours is wired before redesigning the circuit
If anything I would think the issue is with the relay.
