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.
Buderus GB142-60 AM10 Setpoint
New/Used install of boiler unit DHW off, Space heating temp dial set to 125 degrees. AM10 module is calling for a flow temp of 120, boiler maintains a 100 degree temp with a Delta T of 25-30 degrees. Bypassed the AM10 module, wired Relay directly to WA terminals cycles on, lights burner raises to 110 degrees than scales back to 100 degrees (relatively low fire) and remains. Chimney Sweep mode cycles burner between 100 degrees and high set point of 125 degrees(would get hotter if set higher). Any idea why the unit overrides the set point and lowers the fire rate to maintain this lower temp?