23
6.3
A
LARM REGISTER DESCRIPTION
R1H,
R1L
6.3.1
RH
-
R
EGISTER
1
(M
OST SIGNIFICANT
/
HIGH REGISTER
)
Nr bit
Alarm
Symbol Availability
0
RH+
No
1
RH-
No
2
A19
No
3
Sensor break alarm
A20
4
-
5
Compressor low pressure
A22
6
Compressor high pressure
A23
7..15
6.3.2
RL
-
R
EGISTER
2
(L
EAST SIGNIFICANT
/
LOW REGISTER
)
Nr bit
Alarm
Symbol Availability
0
Water heating coil frost alarm
A1
1
Alarm fan (thermo)
A2
No
2
Inlet fan pressure guard alarm
A3
3
Extract fan pressure guard alarm
A4
No
4
Fire alarm
A5
No
5
High temperature alarm
A6
6
Exchanger freezing alarm
A7
7
Alarm anti-freeze
A8
No
8
Pump alarm
A9
No
9
Filter pressure guard alarm
A10
10
R1+
No
11
R1-
No
12
R2+
No
13
R2-
No
14
R3+
No
15
R3-
No
6.4
I
NPUT REGISTERS
:
FUNCTION
04
Inputs
Address MODBUS
B1
–
Exhaust sensor
0
B2
–
Supply sensor
1
B3
–
Exchanger sensor
2
B4
–
Outdoor sensor
3
X1
–
CO2 transmitter
256
6.5
C
OILS
(D
IGITAL
O
UTPUTS
):
FUNCTION
01