Young Entertainer 59 Posted September 19, 2021 Share Posted September 19, 2021 been using my daily exercise time to vist the boat during lockdown, running the motor occasionally, today when i did it and flick on the freezer to give the gase a cycle through i noticed the motor labour more than normal, then noticed that the amp meter go off the chart, turn the freezer switch returned it to normal, checked all wiring/earth etc, ran it again and same result. No blown fuses, wires are cold, compressor seems to be running fine and pipes were getting cold so seems to be operating normally, What else could cause a spike in amps used? Googling offers up mechanical options but there are no abnormal noises. Go me stumped at the moment so any suggestions can be tried Quote Link to post Share on other sites
B00B00 306 Posted September 19, 2021 Share Posted September 19, 2021 Must just be the compressor clutch solenoid or something? Quote Link to post Share on other sites
Island Time 1,211 Posted September 19, 2021 Share Posted September 19, 2021 Yep Booboo is onto it. The Compressor does not use amps, except for the clutch engagement. So the clutch normally draws a few amps, but the solenoid for it should be fused. If it is drawing excessive amperage, measure the draw when engaged (motor does not need to be on) typically 3-4amps, but check the manual for the specific compressor to be certain. Overcurrent means a short circuit within the field coil, or in the compressor circuit. Quote Link to post Share on other sites
Psyche 613 Posted September 19, 2021 Share Posted September 19, 2021 Had this problem, your coil is probably fried like mine was. That said they are as cheap as chips, so just replace it. Easy DIY job https://www.ebay.com/itm/New-A-C-Compressor-Coil-Sanden-SD508-5H14-SD510-12V-9430-6040-CM120019-/142638606558?_ul=IL Should be a stock item in NZ Quote Link to post Share on other sites
Young Entertainer 59 Posted September 19, 2021 Author Share Posted September 19, 2021 thanks for that will check out the coil options Quote Link to post Share on other sites
Psyche 613 Posted September 19, 2021 Share Posted September 19, 2021 my compressor behaved oddly a few times before it died, I'd check the coil to see if its within spec to make sure, but it does sound suspect. Quote Link to post Share on other sites
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