Troubleshooting - Hitachi HC-A16KNX Installation And Operation Manual

4. Troubleshooting

Nº ALARM CODE
→61
1
→63
2
3 D7 is always OFF
4 D12 is never flickering
5 D13 is flickering
D4 & D11 are not
6
flickering
16
PMML0193A rev.2 - 06/2010
DESCRIPTION
Indoor Units have not communicated
with HC-A16KNX for more than 10
min.
Indoor Units have never
communicated 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 is flickering)
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
?
Notes:
- Power source output DC signal has a rotary switch
that must be correctly set to get +5V DC.
- D7 must be in ON
1. 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 Nº6, countermeasure 1
2. D4 neither D11 are not flickering.
 See line Nº1, countermeasure 1
Troubleshooting