Why are my heat strips staying on or not turning on at all

Can this be used as the primary heat source

this Wayne tune-up kit excludes the electrode bracket holder (P/N 21679)

Whether you are performing a seasonal teardown or responding to a terminal failure code

Viessmann 7819971 Air Vent 318423-701 Why are my heat stripsThe Viessmann 7819971 Air Vent with Shut Off Base is a critical component for maintaining hydraulic stability in high performance condensing systems. Engineered specifically for the Vitodens series, this G3 8" automatic air vent facilitates continuous air elimination from the primary heat exchanger loop, preventing airlocks that compromise heat transfer and cause circulator cavitation. This OEM part is the direct replacement air vent for Viessmann