Troubleshooting - Hitachi PC-ARF Technical Catalogue

7 Gateways for building management systems
HC-A16KNX

7.2.5 Troubleshooting

Nº ALARM CODE
→61
1
→63
2
3 D7 is always OFF
4 D12 is never flickering
5 D12 is not flickering
6 D4 & D11 are not flickering
645 645
TCGB0106 rev.0 - 12/2014
DESCRIPTION
Indoor Units have not communi-
cated with HC-A16KNX for more
than 10 min.
Indoor Units have never communi-
cated with HC-A16KNX
No LED is flickering on PCB and 7
segments are OFF
HC-A16KNX is not reading/sending
data (D12 is never flickering)
HC-A16KNX is not operating
(D13 flickering means normal com-
munication)
There is no H-LINK communication
from HC-A16KNX
COUNTERMEASURE
1
Ensure that H-LINK connection is correctly done in
HARC (K1) and also Indoor Units
2 Ensure that Power are supplied to Air Conditioners
1 Ensure that H-LINK connection is correctly done in
HARC (K1) and also in Indoor Units
2 Ensure that Power are supplied to Air Conditioners
1 Ensure that 230 are supplied to Power Source
2 Ensure that +5V DC is supplied to K3
N O T E
• Power source output DC signal has a rotary switch
that must be correctly set to get +5V DC.
• D7 must be in ON
Check connection between MODBUS devices and K5
Check that KNX is connected and KNX power supply
is ON.
1 D4 is flickering but D11 is not flickering.
 See line Nº1, countermeasure 1
2
D4 neither D11 are not flickering.
 See line Nº1, countermeasure 2
7