Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

Weil-Mclain GV-6 lockout

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