Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
GB142 Intermittent No Heat
Taco zone control shows zone one calling for heat, circ pump running, GB142 is not firing. No error codes. I switch off boiler, wait maybe 5 minutes, switch on and it fires. Had thoughts about jumping out AM10 outdoor reset. Any other ideas? Has not been service since installed almost 3 years ago. Thanks a lot for any help!