51
ID
Class
Designation
(Possible) cause/effect
Rectification/action
Quit
triggered.
513 Warning Sensor bottom
temperature
The top temperature sensor of the buffer
storage is defective. The buffer storage is in
the emergency operation mode. The top
temperature is used.
The bottom temperature
sensor of the buffer
storage or its wiring must
be checked.
No
514 Error
Buffer deactivated
An incorrect parameter setting was found
during the start-up process. The buffer is not
active.
Check and correct
assigned parameters.
Restart system.
Yes
550 Warning Frost protection active The frost monitoring system has detected an
insufficient water temperature below the
frost protection limit. A heat request is
triggered.
-
No
551 Warning Frost protection alarm
The frost monitoring system has detected an
insufficient water temperature below the
frost protection alarm limit. The hot-water
tank is at risk to be damaged by frost.
Primarily, look at the
other alarms. These are
probably the cause of the
standstill of the system. A
rectification of those
should also cancel the
frost protection alarm.
If this does not fix the
alarm, please contact
customer service
immediately.
Yes
560 Warning Sensor top temperature The top temperature sensor of the hot-water
tank is defective. The hot-water tank is in
emergency operation mode.
The top temperature
sensor of the hot-water
tank or its wiring must be
checked.
No
561 Error
Excessive temperature The temperature of the hot-water tank has
exceeded the maximum permitted
temperature. No heat request is triggered.
-
No
563 Error
Heat request timeout
Force loading with defective top temperature
sensor or the hot-water tank did not get hot.
Repeat loading process
Yes
564 Error
Hot-water tank pump
The hot-water tank loading pump reports an
error. The hot-water tank is not ready for
The hot-water tank
loading pump or its
No
