Hi all.
Long story short - my Aurora P-One developed the common E031 fault. I carried out the repair myself (ex electronics teacher), replacing the 4 relays. On refitting, it returned a Riso - 0Mohm fault. Assuming I'd messed up somewhere, I bought an exchange unit from a reputable source, and installed that today - this gave a Riso of 20Mohm, and it burst into life as it should.
An hour later, my garage (where the panels and inverter are fitted) RCD tripped, and on resetting, I was dismayed to find the inverter giving a Riso of zero again, as on the old inverter. It returns the same zero Riso regardless of which of the two panel strings are connected on its own on startup.
What the heck?!
I understand that Riso issues are usually caused by damp getting into the PV connectors, but could this really explain the jump from 20M to zero in hot dry weather? And on both strings?
Any ideas, please? Thanks.
Long story short - my Aurora P-One developed the common E031 fault. I carried out the repair myself (ex electronics teacher), replacing the 4 relays. On refitting, it returned a Riso - 0Mohm fault. Assuming I'd messed up somewhere, I bought an exchange unit from a reputable source, and installed that today - this gave a Riso of 20Mohm, and it burst into life as it should.
An hour later, my garage (where the panels and inverter are fitted) RCD tripped, and on resetting, I was dismayed to find the inverter giving a Riso of zero again, as on the old inverter. It returns the same zero Riso regardless of which of the two panel strings are connected on its own on startup.
What the heck?!
I understand that Riso issues are usually caused by damp getting into the PV connectors, but could this really explain the jump from 20M to zero in hot dry weather? And on both strings?
Any ideas, please? Thanks.
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