Hitachi YUTAKI S80 Series Technical Catalogue page 129

10. Electrical wiring
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Led indications
PCB1
Name
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
PCB3
Name
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
129
TCGB0075 rev.0 - 11/2012
Color
Green
Green System heater or boiler operation
Green
Red Heat pump operation (thermo ON/OFF)
Yellow Operation: indicates power supply to the unit
Red Alarm (flickering with 1 sec interval)
-
Yellow
Color
Green
-
-
Red Heat pump operation (compressor 2)
Yellow Alarm (flickering with 1 sec interval)
-
-
Yellow
Indication
Pump operation
DHW tank's heater operation
Not used
H-link indication transmission
Indication
Power supply indication
Not used
Not used
Not used
Not used
H-link indication transmission
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