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Weil-McLain wm97 return lockout?
I have a Weil-McLain WM97+ (110 BTU,) with 3 zones. Only two zones are operational at this time.
When the T-Stat is calling, the boiler kicks on and during the cycle in the beginning boiler runs for a bit, and than LOCK OUT with red background. The trouble shows "58F RETURN LOCKOUT". Than it stays for a few minutes and starts on it's on again.
- My question is it resetting over and over again on it's own... or something else?
- My other question is what is wrong here and what I can do to fix it...
Supply is set for: 175F