Batteries didn't recharge during outage?
Equipment:
IQ7+ panels x27
IQ gateway
IQ 5P batteries x4
IQ System Controller 3
IQ Load Controller
(pulling from Enlighten app, hope I didn't miss something)
Events:
Utility outage Sunday afternoon.
System switched to batteries; shed A/C compressor. We manually turned off HVAC fan and just about everything else, goal to keep refrigerator running, have option to briefly run shop vac if basement water intrusion became an issue. No appliance usage, powered down desktop PC.
System showed batteries at 85% late Sunday/early Monday. Down to 82% Monday morning. Gateway quit communicating Monday morning. Internet was out, but household Wi-Fi was still up. "Assistant" in app responded that gateway issue was due to home Internet failure, reported that we do not have cellular option. Cellular module is installed, but signal can vary.
No gateway reporting all day Monday. I emailed Enphase support about the gateway communication and got a ticket number back. I contacted my local installer and they advised that batteries would charge even if gateway stopped reporting.
Power Co out, restored, disconnected for adjacent restoration, restored briefly again, disconnected. Rain started and they stopped working, leaving us disconnected.
Had full sun most of Monday, plus intermittent grid connection. System set to full backup.
Around 9pm Monday, house abruptly went dark. Checking outside, gateway is completely dark, batteries have steady red lights.
Questions:
Besides "what the heck"?
Why did batteries not charge during an entire day of full sun, with basically no household draw but refrigerator?
Why does app report no cellular backup option?
How do I prevent this from happening again during a future "sunny day" outage?
Thanks for any advice/assistance.