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STATUS LEDs
O/B
Y1
Y2
G
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON/OFF OFF
OFF
ON
ON/OFF OFF
OFF
OFF
A
ON
OFF
ON
A
ON
ON
ON
B
ON
OFF
ON
B
ON
ON
ON
ON/OFF OFF
OFF
ON
OFF
OFF
OFF
ON
ON/OFF
ON
ON
ON
ON/OFF OFF
OFF
ON
FL = Flashing
A = On when reversing valve jumper is in O position
C = On when auxiliary heat is energized
STATUS LED LEGEND
W2
PWR
DPR
MODE
OFF
OFF
OFF
Off
OFF
ON
OFF
On
OFF
ON
0
Vent
OFF
ON
1
Purge
OFF
ON
1
Y1 Cool
OFF
ON
1
Y2 Cool
OFF
ON
1
Y1 Cool
OFF
ON
1
Y2 Cool
ON
ON
0
Em. Heat
OFF
FL
1
Cap Cut out
ON
ON
1
Em. Heat
ON
ON
1
Em. Heat
1= One or more damper LEDs on
SYSTEM CONTROLLER - HEAT PUMP
FUNCTION
Power off
Power on, blower off, zones satisfied
Blower on, compressor(s) off, all zone dampers open
Blower off, compressor(s) off, Dampers with LEDs on are closed
1st stage cool, blower on. Dampers with LEDs on are closed
2st stage cool, blower on. Dampers with LEDs on are closed
1st stage cool, blower on. Dampers with LEDs on are closed
2st stage cool, blower on. Dampers with LEDs on are closed
Auxiliary and emergency heat on
Blower on, all compressors off. Dampers with LED on are closed
If below 90°, stages up to Y1, Y2 and W2
Fossil Fuel mode, stages uo to W2 only
B = On when reversing jumper is in B position
0 = All damper LEDS are off
10
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