Professor Butler

A quick variable frequency drive tip when replacing a VFD with a direct replacement. Make sure to back up the parameters to the keypad. It will save you future hassle and prevent having to add parameters manually one by one

Attention all junior HVAC technicians and apprentices. You need tools to do the job. Make sure you buy one tool a week to grow your collection so you can have the right tool for the job to advance as a technician.