My sand filter is usually 15 to 20 psi. Temps dropped to record lows (single digits) and rolling blackouts have us on power for an hour, power off an hour. I had pump running continuously since the start. My pressure gauge is now pegged...shut off pump goes back to zero...turn on pump goes all the way around to zero. I tried to backwash but nothing happens. This was over the first night. I didnt think water could freeze that fast but I'm thinking maybe water froze in part of the system...
Low temps, intermittent power High Pressure , No backwash
Low temps, intermittent power High Pressure , No backwash
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