AKC 25H1
Function description
RC.1J.Z4.02
©
Danfoss
09/1999
19
In connection with the controller’s functions there are a number of alarms and messages
which become visible in case of a fault or incorrect operation.
Distinction is made between important information and not so important information. The
degree of importance is fixed for some, whilst others can be changed if required. (This
change can only be made when a PC is connected to the system and settings have to be
made in each of the relevant controllers).
The importance is indicated by means of the following:
1. "Alarms"
This is important information from the controller.
- The controller’s alarm output is activated.
- Information is transmitted on the DANBUSS network together with status value 1.
- If a gateway type AKA 243/244 is connected and it is defined as master, its relay output
DO2 will be activated for two minutes.
- Later, when the alarm is discontinued, the same information will be repeated, but this time
with status value 0.
2. "Messages"
This is less important information from the controller.
- The information is transmitted on the DANBUSS
network together with status value 2.
- Later, when the “message” is discontinued, the same information will be repeated but this
time with status value 0.
0. “Suppressed information”
This information stops at the controller. It is not transmitted anywhere.
List of alarm activities
m
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m
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m
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A
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a
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1
H
5
2
C
K
A
y
a
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r
m
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a
l
a
1
H
5
2
C
K
A
D
E
L
m
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a
1
2
A
K
A
D
E
L
4
4
2
/
3
4
2
A
K
A
y
a
l
e
r
2
O
D
1
m
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a
l
A
F
F
O
S
E
H
S
A
L
F
S
E
H
S
A
L
F
.
n
i
m
2
F
F
O
m
r
a
l
a
o
N
N
O
F
F
O
F
F
O
N
O
2
m
r
a
l
A
N
O
S
E
H
S
A
L
F
S
E
H
S
A
L
F
N
O
m
r
a
l
a
o
N
N
O
F
F
O
F
F
O
N
O
0
m
r
a
l
A
N
O
F
F
O
F
F
O
N
O
m
r
a
l
a
o
N
N
O
F
F
O
F
F
O
N
O
Information from the controller
Below, the information is shown together with the importance of it. The information is shown in
brackets “[ ]”. If there are several figures in the bracket, the setting can be changed (the
factory setting is shown in bold type).
Standby mode
[ 1, 2, 0 ]
Regulation can be stopped manually with the “Main Switch” menu, or by means of the
external input MAIN SWITCH.
When the regulation has been stopped, there will in addition to this message, only be
transmitted alarms for sensor faults. All other alarms and messages will be
suppressed.
RFG. type not selected
[ 1, 2, 0 ]
No refrigerant has been selected.
Before regulation can be started, a refrigerant type will have to be selected.
RFG. type change after power up
[ 1, 2, 0 ]
Refrigerant type changed after the controller was started.
Warning!! Change of refrigerant type can cause damage to the compressor. Cf.
section on selection of refrigerant.
Alarms and
messages
