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21.8 ALARM CATEGORIES
The alarms are divided into different categories depending on the type
and level of the fault. Alarm category is displayed in the alarm window,
alarm log and alarm history.
CATEGORIES A-H ARE ALARMS, CATEGORIES I-J ARE WARNINGS/INFORMATION, CATEGORIES K-M ARE WARNINGS, CATEGORY Z IS
INFORMATION.
Meaning
Stops the compressor
Stops additional heat
Alarm lamp, alarm buzzer is activated
Alarm delay
Requires acknowledgement to restart
Can be restarted before acknowledgement
Menu display must be acknowledged
Placed in the information log
Table 172 Alarm categories
[In]
Temporary stop of compressor. The information may recur a
number of times during a certain time period; if there are more
during the period, a category A alarm is sounded.
[J]
Temporary stop of compressor. The information may recur a
number of times during a certain time period; if there are more
during the period, a category A alarm is sounded.
[M]
Used for board connection problems.
21.9 ALARM WINDOW
When an alarm/warning occurs, the display shows information about
what has happened. At the same time, information is saved in the alarm
log and alarm history.
Fig. 55 Example
21.10 ALARM FUNCTIONS
The alarm text is indicated in the heading.
21.10.1 HIGH HOT GAS TEMPERATURE E2X.T6
Function: Compressor stops. Activated when the temperature on
sensor T6 exceeds the applicable maximum hot gas temperature.
Alarm timer starts: Yes.
Reset condition: The hot gas temperature drops 5K below the alarm
limit.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
21.10.2 TRIPPED LOW PRESSURE SWITCH E2X.RLP
Function: The compressor is stopped because of too low pressure in the
refrigerant circuit. Activated on open contact on the low pressure
switch. The alarm is delayed with 150s after compressor start or
alternation between hot water and heating production.
Alarm timer starts: Yes.
Reset condition: Closed signal over the pressure switch.
Category: A.
6 720 806 768 (2013/02)
A
B
C
D
X
X
X
X
X
X
X
X
5s
3s
15 min
1 min
X
X
X
X
X
X
X
X
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
21.10.3 TRIPPED HIGH PRESSURE SWITCH E2X.RHP
Function: The compressor is stopped because of too high pressure in
the refrigerant circuit. Activated on open contact on the high pressure
switch.
Alarm timer starts: Yes.
Reset condition: Closed signal over the pressure switch.
Category: A.
6 720 643 415-15.1I
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
21.10.4 LOW PRESSURE COLLECTOR CIRCUIT
Function: If Alarm at low pressure in collector circuit is selected and
the external input closes, this alarm is triggered. The compressor stops
( Chapter 20.6).
Alarm timer starts: Yes.
Reset condition: The pressure exceeds the set level. The setting is
made on the pressure switch.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
21.10.5 LOW TEMPERATURE COLLECTOR CIRCUIT IN E2X.T10
Function: Warning/alarm is given if the temperature of the collector
circuit in is too low. First, a warning is given. If the warning appears
several times during a certain time period, the warning transforms into a
category A alarm.
For settings of T10: (Chapter 20.9).
Alarm timer starts: Yes.
Reset condition: T10 exceeds the lowest permitted temperature T10
plus hysteresis.
Category: J which goes over into A.
E
F
G
h
In
X
X
X
X
X
X
X
X
5s
1s
1s
1s
5s
X
X
X
X
X
X
X
X
X
X
ALARMS
J
K
L
M
Z
X
X
5s
2s
5s
0s
0s
X
X
X
X
X
X
X
59
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