PVI Industries PV500-40 user manual Display and Interface

1.DISPLAY AND INTERFACE

1.1KEYBOARD BUTTONS

	- Displays and modifies the temperature set points.
SET	- In programming mode, it selects a parameter or confirms an operation.
	- Displays and modifies the energy saving (Night Time setback) settings.
	- In programming mode, it browses the parameter codes or increases a
UP	displayed value.
	- Displays the working hours of the load relays.
	- In programming mode, it browses the parameter codes or decreases a
DOWN	displayed value.
	- Changes lower display from Probe 1 (Depending on product, probe 1 may
	display lower tank/inlet or upper tank/outlet temperature or may not be used.) to
CLOCK	current time and day.
	- Changes upper display from Outlet Temperature to Probe 3 (Optional
	Temperature Probe. Used for Outdoor Reset on Boilers) and displays the
EXT	temperature difference of the Inlet Temperature minus Outlet temperature.
	In programming mode it sets the 4-20mA output (password is required).
ON/OFF	- Switches the control ON or OFF.

1.2KEY COMBINATIONS

+

+

+

To lock and unlock the keyboard.

To enter the programming mode.

To exit the programming mode.

1.3LED ICON LEGEND

LED	MODE	Function
	ON	Temperatures are displayed in Fahrenheit degree
	ON	Temperatures are displayed in Celsius degree
	Flashing	Call for heat time delay
	ON	Call for heat is on
	Flashing	Second stage time delay (On 2-stage units only)
	ON	Second stage on
	Flashing	Freeze protection time delay
	ON	Freeze protection on
	ON	Modulation output signal is in manual control mode
	ON	Modulation output signal is automatically controlled by temperature probe 1
Ext	ON	The outside temperature is displayed
	FLASHING	Low gas pressure alarm
	FLASHING	High gas pressure alarm
	FLASHING	Low-water alarm
	ON	Lower LED readout is displaying the clock
	FLASHING	Alarm signal
	FLASHING	Programmed working hours limit is exceeded
	ON	Working hours are displayed in Lower LED readout
ES	ON	The energy saving function is running
Page 2 / 6		PV500-40 01/25/11