Restricted adjustment mode - PENN Controls - LIT-12012249 - A421ABT - A421AET - Electronic Temperature Control - A421 Duty‐Cycle/Ventilation Models

A421 Series Electronic Temperature Controls with Cycle Timer Product Bulletin

Product name
A421 Duty‐Cycle/Ventilation Models
Document type
Product Bulletin
Document number
LIT-12012249
Revision date
2023-01-09

Use the restricted adjustment mode to limit the temperature range over which end users can adjust the control and prevent over-adjustment of your cooling application.

To limit the adjustment range, set the high and low temperature stop values. See Figure 1.

You can also set the restricted adjustment range to eliminate any temperature adjustment on the control by end users, effectively locking the control adjustment features.

Figure 1. Restricted user adjustment