Hitachi YUTAKI S80 R410A Series Installation And Operation Manual page 62

6.3.2 LED indication
Name Colour
LED1 Green
LED2 Red
LED3 Red
LED4 Yellow
LED5 Green
LED6 Yellow
LED7 Yellow
6.4 Terminal board connections
6.4.1 Table board 1
Main power supply
◆
The main power supply connection is wired to the Terminal board (TB1) as follows:
Earth
Earth
PMEN0648 rev.0 - 03/2023
Heat pump operation (Thermo ON/OFF)
Alarm (flickering with 1 sec interval)
H‑LINK transmission for unit controller
Operating Line
Outdoor unit
(Twisted shielded pair cable or
RAS‑WHVNPE
shielded pair cable)
DC5V
x
(Non‑Pole Transmission, H‑LINK
system)
x
YUTAKI S80
Indication
Power indication
Power indication
Not used
H‑LINK transmission
Outdoor unit
RAS‑WHNPE
x
Earth
x
YUTAKI S80
Earth
6
Operating Line
(Twisted shielded pair
cable or shielded pair
cable)
DC5V (Non‑Pole
Transmission, H‑LINK
system)
53