EWC Controls Forum

It sounds like your bypass damper may indeed be stuck open if it doesn't change positions regardless of the blower or zone conditions. The missing arm you mentioned could be part of the damper motor or linkage that controls the damper's movement. To proceed, you might:

Inspect for any visible ...

The MA-15s motor is not compatible with the Econet zone board. The Econet system only works with the MA-ND5 motor.

For Honeywell damper replacement, it involves swapping out the current damper with a compatible Honeywell model for air control systems. It's essential to ensure that the replacement damper matches your system's size and specifications.

The NCM-300 is a network control module often used in HVAC ...