LED
COLOR
INDICATION
Thermostat LED’s (4 Positions)
R
Red
24 VAC available to Thermostat
Y1
Yellow
Thermostat First Stage Compressor Call
Y2
Yellow
Thermostat Second Stage Compressor Call
W1/E/AX1
White
Thermostat Call for W1 or E or AX1
W2/AX2
White
Thermostat Call for W2 or AX2
O/B/W3
Yellow
Thermostat Call for O, B or W3
G
Green
Thermostat Fan Call
Damper LED’s (4 Positions)
Power Close / Power Open
Red / Green
Red On Damper Closed; Green on Damper Open
No light when wiring short detected
Fire Alarm LED
Fire Indication
Red
Fire Terminals Active - Panel is Shut Down
15
In addition to LED’s, the expandable zone panel has a full function built-in backlit display panel that provides
information on the current operations of the zone panel. When the expandable zone panel is running in normal
operation, the display is updated continuously to show the system operating parameters. The system will show
the following status screens on the display.
Number of Heat Calls
currently being serviced. Check the panel
LED if it is necessary to determine exactly which zones are calling
for heat operation. If Auxiliary Heat or Emergency Heat calls are
active, the display will replace heat calls with Auxiliary or
Emergency Heat Calls.
Number of Cool Calls
currently being serviced. Check the panel
LED if it is necessary to determine exactly which zones are calling
for cooling operation.
