55
ID
Class
Designation
(Possible) cause/effect
Rectification/action
Quit
800 Error
Heat request DI
The digital input of the external heat request
is defective.
External heat request is not ready for
operation.
The heat request DI or its
wiring must be checked.
No
801 Warning Heat request
temperature AI
The analog input of the external heat request
is defective.
The external heat request is only operated
with the digital input.
The heat request
temperature AI or its
wiring must be checked.
No
802 Error
Heat request
deactivated
An incorrect parameter setting was found
during the start-up process.
The external heat request is not active.
Check and correct
assigned parameters.
Restart system.
Yes
860 Warning Temperature sensor ext.
heat source
The temperature sensor of the external heat
source is defective.
The temperature cannot be monitored.
The temperature sensor
of the external heat
source or its wiring must
be checked.
No
861 Error
Ext. heat source
The digital output to request the external
heat source is defective.
The external heat source cannot be
requested.
The digital output or its
wiring must be checked.
No
862 Error
Ext. heat source
The analog output to request the external
heat source is defective.
The external heat source cannot be
requested.
The analog output or its
wiring must be checked.
No
863 Error
Ext. heat source
deactivated
An incorrect parameter setting was found
during the start-up process. The external heat
source is not active.
Check and correct
assigned parameters.
Restart system.
Yes
900 Error
Heat sources
management
deactivated
An incorrect parameter setting was found
during the start-up process. The heat sources
management is not active.
Check and correct
assigned parameters.
Restart system.
Yes
100
0
Error
Heat pump deactivated An incorrect parameter setting was found
during the start-up process. The heat pump is
not active.
Check and correct
assigned parameters.
Restart system.
No
