October 15, 20232 yr I’m hoping someone can help me out with this problem….. I have a Mecer Sol-I-Ax-8m inverter connected to 2xHubble AM-2 batteries connected as a backup system - no solar yet. The whole system was working perfectly fine until a kettle was plugged into the wrong plug and turned on. The batteries’ alarm light turned on and the inverter circuits turned off. After bypassing the inverter, the batteries will only reset when the battery disconnect fuses are disconnected. They show as fully charged and working. As soon as I close the battery disconnect to connect to the inverter, the batteries’ alarm light goes back on and I can’t reset them. This is done with the inverter off. Any help or ideas as to how I can sort this out will be appreciated! Edited October 16, 20232 yr by Bean
October 15, 20232 yr 7 hours ago, Bean said: As soon as I close the battery disconnect to connect to the inverter, the batteries’ alarm light goes back on and I can’t reset them. This may or may not be an issue, but that you must never do. You are brutally charging the battery caps at a near short circuit current. You must gracefully precharge the inverter caps by closing the fuse disconnector first and then start the batteries.
October 16, 20232 yr Author Thank you @BritishRacingGreen for the reply. I obviously didn't make it clear that when the fuse breaker is closed before the battery its turned on, the battery will send an alarm light immediately and even after a reset, it won't change. If I disconnect the fuse breaker and turn on the battery and reset it, it then shows as fully charged. This is all done with the inverter off. What would cause this, and how can I troubleshoot it? Any help is appreciated!
October 16, 20232 yr @Bean what voltage are the batteries at. Secondly maybe try switching to agm voltage on batteries settings.
October 16, 20232 yr Author @Raj35, the inverter doesn’t recognise the batteries at all - gives me a “No Battery Connected” fault code. Batteries are fully charged - showing 53.8v when measured at terminals with multimeter - as per Hubble data sheet. I’ll go into settings and give it a try though and let you know if it helped.
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