Subject to changes in line with technical progress.
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Operation
Reset alarms:
Alarm list: The line is deleted.
Alarm history: Display as an "outgoing" alarm
Alarm types:
The following table describes all of the alarms that can be displayed. Class B does not lead to a shut-down, but merely
serves as a warning.
Alarm text
Class
Description/Remedy
Feed temp.
A
Sensor defective or cable break -> Sensor check
required
Return temp.
A
Sensor defective or cable break -> Sensor check
required
Feed temp. after feed-in
A
Sensor defective or cable break -> Sensor check
required
Eff. pressure 1
A
Sensor defective or cable break -> Sensor check
required
Eff. pressure 2
A
Sensor defective or cable break -> Sensor check
required
Fluid volume
B
Fluid volume implausible
The brine circulation is checked within a defined
period of time. If the fluid volume is implausible, the
system is switched off with an A alarm
Pump 1
B
Pump frequency converter has triggered -> System
check required
Pump 2
B
Pump frequency converter has triggered -> System
check required
Pump 1 and pump 2
A
If both pumps have a fault, the system switches off
Pump frequency converter is faulty -> System
check required
Sole pressure warning
B
Pressure sensor reports lack of system pressure ->
System check required
Sole pressure fault
A
Pressure sensor reports lack of system pressure ->
System check required
Class A alarms lead to system shut-down.
4.3
Display menu
The screens that are not described must be skipped with the Enter key when they appear.
The
Start menu
visualises the current status with symbols in the top line. The digital enable is shown in "Ext. Demand"
and the analogue request signal in "Demand". The Optimizing display indicates whether or not the optimisation is active.
If the higher-level controller does not enable it, "Off" appears in the main menu.
