Penn A421 Series User Manual

Advanced menu
You can use the Advanced menu to change the parameter values in the Basic menu and the
parameter values for the following advanced parameter codes:
• Temperature Units (Un)
• Low Temperature Setpoint Stop (LtS)
• High Temperature Setpoint Stop (HtS)
• Anti-Short Cycle Delay (ASd)
• Defrost Cycle Time (dFt)
• Defrost Interval (dI)
• Binary Input Mode (bLn)
• Backlight Brightness Level (bLL)
• Temperature Setback (tSb)
• Sensor Offset (So)
• Sensor Failure Option (SO)
• Start or Stop Defrost Cycle (SdF)
See Parameter codes and modes of operation and Table 3 for more information about parameter
codes, usable parameter values, and default values.
15A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Guide

Penn A421 Series Specifications

General

Display	LED
Series	A421
Supply Voltage	24 VAC/VDC
Output Relay	SPDT
Sensor Type	Thermistor, Thermocouple
Type	Temperature Controller
Mounting	DIN rail
Input Voltage	24 VAC/VDC
Output Voltage	120/240 VAC
Operating Temperature	-40 to 158°F (-40 to 70°C)