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ERROR MANAGEMENT
6 720 642 344 (2010/01)
20
8 ERROR MANAGEMENT
The control unit has an advanced monitoring system that
gives alarms if anything unforeseen happens. The
customer can correct most alarms themselves. There is
never a risk of affecting something when an alarm is
reset once or twice. Contact the dealer/service engineer
in the event of repeated alarms.
8.1 EXAMPLE OF AN ALARM:
When an alarm is triggered, an alarm window is
displayed and a warning signal sounds. The alarm
window displays the alarm causes and the time and date
that the alarm occurred.
Fig. 48
If you press the menu dial whilst Acknowledge is
highlighted, the alarm symbol is cancelled from the
display and the alarm log, and the alarm buzzer is
silenced. The alarm signal continues to be shown if a
fault is not remedied. The ON and fault indicators
change from flashing red to constant red indications.
Every alarm is stored in the fault log. Active alarms are
indicated by the alarm symbol.
8.2 DIMMED MENU DISPLAY
8.2.1 POSSIBLE CAUSE 1: FAULTY FUSE IN THE
DOMESTIC POWER SUPPLY.
BCheck whether all domestic fuses are OK.
BIf required, change/reset fuse/MCB.
After the fault has been remedied, the heat pump
restarts automatically 15 minutes later.
8.2.2 POSSIBLE CAUSE 2: AN MCB IN THE CONTROL
PANEL OR IN THE INTERNAL UNIT HAS
TRIPPED.
BContact the dealer.
8.3 EMERGENCY MODE
The emergency function is available for the electric
additional heater in the internal unit. Information in this
connection is contained in the operating instructions of
the internal unit.
In emergencies heat generation is covered by the
electric additional heater. This enables heat to be
provided until the customer service remedies the fault.
8.4 ALL ALARMS AND WARNING
WINDOWS
An alarm can occur temporarily due to various reasons.
However, there is never a risk involved in resetting an
alarm. All the alarms that can appear in the menu display
are described in this section. The descriptions give an
idea about the nature of the alarm and what can be done
to rectify it.
The alarm log (see Advanced menu) shows the alarms
and warnings that have occurred.
8.4.1 LIST OF ALL ALARMS:
Tripped low pressure switch
Tripped high pressure switch
Failure / Short circuit on sensor.
Faulty function in 4-way valve
T6 High hot gas temperature
Fault on electric additional heat
T8 High flow temperature.
Low temperature in condenser
Tripped motor cut-out
Air/Water pump not connected
Fault in I/O card control cabinet/electric boiler
Tripped motor cut-out fan
8.4.2 LIST OF ALL WARNINGS:
Is the heat pump fused for this output?
High temperature difference heat transfer fluid
8.4.3 LIST OF ALL INFORMATION WINDOWS
Heat pump is now working at its highest permitted
temperature
Add. heat is now working at its highest permitted
temperature
This setting means that additional heat can take
over operation
Temporary stop of hot water production
Temporary stop of compressor operation
6 720 641 467-19.1I
Emergency mode should not be mistaken
for alarm mode. In alarm mode the heat
pump stops. Heat generation continues to
be regulated by the control unit.
20


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