Horstmann Radio Telemeter Series 2a Manual [exclusive] -

: The "Aux" light indicates the status of the auxiliary relay (off-peak equipment). If this light is flashing continuously, it may indicate a technical fault. Technical Details Internal Function

A significant portion of the is dedicated to troubleshooting. If your heating isn't working as expected, consult these common issues before calling a technician. horstmann radio telemeter series 2a manual

The highlights several features that distinguish it from basic mechanical thermostats: : The "Aux" light indicates the status of

The unit appears stuck in Manual On mode, even with the switch set to Auto . horstmann radio telemeter series 2a manual