Repair information - PENN Controls - A421ABD - A421AED - Electronic Temperature Control - A421 Off‐Cycle Defrost Model

A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Guide

Product name
A421 Off‐Cycle Defrost Model
Document type
Installation Guide
Document revision
E
Revision date
2022-08-25

Do not attempt to repair or recalibrate the A421 Temperature Control. In case of a defective or improperly functioning control, contact your nearest authorized Johnson Controls/Penn distributor or sales representative.

When you contact your Johnson Controls/Penn distributor, have the model number of the control available. You can find this number on the label inside the cover of the control.