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Weil-Mclain GV-6 lockout
snow_country
Member Posts: 2
in Gas Heating
when it is very cold and more than one zone needs heat, boiler goes into lockout with TSTAT & power blinking. - manual states; boiler water does not achieve 130F within 20 minutes. I installed Taco zone control to rule out stray voltage on thermostat cuircuit. I notice that when this happens, water entering the boiler is
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