Adjusting the control in Restricted mode - PENN Controls - A421ABD - A421AED - Electronic Temperature Control - A421 Off‐Cycle Defrost Model

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

PENN Controls
Product name
A421 Off‐Cycle Defrost Model
Document type
Installation Guide
Part number
Document revision
Revision date

About this task

In this task you adjust the OFF value and shift the On and OFF control band within the restricted adjustment range, when the control is in the restricted adjustment mode.


  1. On the Main Screen, press MENU to go to the Restricted Adjustment mode menu and display the OFF parameter code screen (Figure 1).
  2. To go to the OFF value screen, press MENU again.
  3. On the OFF value screen, press Down or Up to change the OFF value within the restricted adjustment range only.
  4. To save the selected OFF value and return to the OFF code screen, press MENU.
  5. To return to the Main screen, press Down and Up simultaneously.
    Figure 1. Adjusting temperature in the Restricted menu