We had charger installed and it worked fine for 12 months (was happy with it ). But it started failing in the very cold weather in dec 2022 (three flashing red lights). When it warmed up it would started working again. But recently it has been going into fault condition more often and I fear will be unusable soon. Sent inquiry to customer support back in dec but no response and continuing to try and get through to them. From other posts it seems like a known/common problem. If this issue was fixed then unit is otherwise ok. UPDATE: Since posting above issue have been in contact with support/Escalations. The unit was removed by installer, I sent back to EO, they fixed whatever component needed replacing, sent back to me and yesterday replaced. All working now (and I hope/trust next winter when it gets cold all will be OK). So I am happy with this outcome (fixed at no expense for me) and have increased rating to 4 (only not 5 because it took until now to get sorted) Am happy with this unit - compact, looks good and now works fully.