6.
Alarm/fault display
6.1
Types of error
There are 3 types of message (see below). Three different
messages can be shown on the display at the same time.
Press the setting knob on the control panel once to
acknowledge and reset the message.
• The
information message
does not affect the function
of the calorifier/heat pump; however, it notifies the
user of a problem that should be remedied as soon as
possible (message 8, 9 and 10).
•
In the event of
refrigerant circuit error messages
,
the supply of hot water by the heat pump is interrupted.
If the electrical additional heating is activated, this takes
over the hot water supply until the target hot water
temperature is reached (error message 3, 4, 5 and 6).
•
In the event of
error messages for the overall system
,
the hot water supply is stopped completely. These
messages are most likely due to a sensor error (error
message 1 and 2).
The user can view the error messages in the display.
The error messages are acknowledged by pressing the
setting knob. Before the calorifier/heat pump returns
to normal operation, the error must be rectified and
acknowledged. If the error is not rectified, the error
message will remain on the display. If several error
messages occur at the same time, these will be shown
in the second line of the display, listed in order of priority.
The pressure switch error messages 5 & 6 are dealt with
as follows.
Error message 5 (pressure switch error message appearing
for the first time): the heat pump is switched off. The heat
pump starts up again if the pressure normalises of its
own accord. In the case of error message 5, the indicator
LED (1) flashes red. As soon as the error is rectified
(or has resolved itself), the indicator LED automatically
changes to orange (flashing). After the error message
has been acknowledged, the indicator LED then indicates
the operating or standby mode of the calorifier/heat pump
(= indicator LED permanently green or orange).
If the same error occurs again within 6 hours of the first
error message, error message 6 is displayed. The heat
pump is switched off. The HP can only start up again
after the error has been rectified and the error message
has been acknowledged. In the case of error message 6,
the indicator LED (1) flashes red. As soon as the error
is rectified, and once the error message has been
acknowledged by pressing the setting knob, the calorifier/
heat pump then changes to the operating or standby
mode (= indicator LED permanently green or orange).
Indicator LED: error messages
The indicator LED (1) of the heat pump is flashing red:
Error message for the refrigerant circuit or information
message. Both indicator LEDs (1 + 2) flashing: storage
tank sensor faulty, it is not possible to heat up the water.
1. Operating and fault indicator,
heat pump.
Flashing red = fault in alarm
group 2 or 3
2. Operating and fault indicator,
additional heating (boiler or
electric heating element).
Both indicators (1 + 2) flashing red =
fault in alarm group 1
3. Display
Alarm
9 0 0
Acknowledge =
press switch
Control panel
1 2 3
4
6.2
Overview of error messages
Error
number
Indicator LED
Cause of error
Effect
No. 1
No. 2
1
flashing (red) flashing (red) Short circuit on temperature sensor
in upper region of storage tank
Heat pump and additional heating
switched off.
2
flashing (red) flashing (red) Temperature sensor in upper region
of storage tank disconnected.
Heat pump and additional heating
switched off.
3
flashing (red)
Short circuit on temperature sensor
on the evaporator.
Compressor is switched off.
10
4 215 949 / 00
ALArM/FAULT DISPLAy
