Penn A421 Series User Manual

Figure 8: Navigating the Advanced menu
Viewing and changing values in the Advanced menu
To access the Advanced menu and view and change the parameter values, complete the following
steps:
1. On the Main screen, press and hold Down and Up simultaneously for 5 seconds. Un displays on
the LCD, which is the first parameter code screen displayed in the Advanced menu.
2. To scroll through all of the advanced parameter codes and display the preferred code, press
Down or Up.
3. With the preferred parameter code displayed, press MENU to display the current parameter
A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Guide16

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)