39
6.2.4
Malfunctions
ATTENTION! At the extremely clogged heat exchanger, flue gas temperature will increase. If it reaches
300 °C (factory setting), the boiler output will be reduced. We recommend regular cleaning of the
boiler see Chap. 7.
The fault is signalled by the red LED flashing on the button B and the red LED shining on the button A. When
pressing the button B, the list of failures is displayed.
Failures display range is dependent on the chosen equipment of the boiler and the heating system.
Display
Boiler reaction
Solution
Confirmation - Passive / Active
+ A6 Space HC1: Process Error
Boiler operation according to heating
curve
Check settings in the configuration
+ A7 Space TO2: Process Error
+ B1 Start-up TO1: xxx
Boiler operation according to the boiler
temperature
Perform manual opening of the three-way
valve.*
Check the sensor connection or replace it.
+ B12 Start-up TO2: xxx
+ Overheating TV: Error
Shut-down of the hot water heating
Check the settings and adjust the
parameters.
+ B2 Boiler temperature: xxx
Shut-down of the boiler operation
Check the sensor connection or replace it.
+ B3 Water temperature: xxx
Shut-down of the hot water heating
+ B5 Feeder temperature: xxx
Shut-down of the boiler operation
+ B8 Fuel gas temperature: 400 °C
Shut-down of the boiler operation
+ B8 Flue gas temperature: xxx
Shut-down of the boiler operation
+ B9 Outside temperature: xxx
Desired temperature is averaged out
from the attenuated and adjusted
outdoor temperature
+ Safety thermostat Error
Shut-down of the boiler operation
Safety thermostat unblocking.
Check the thermostat settings.
+ Feeder TMK Error
Shut-down of the boiler operation
Check el. connection.
Check fuel feeder function.
+ Ignition: Error Error
Accelerated feeder operation
Check the fuel control in the tank (fuel
shortage or bridging).
Check fuel feeder function.
Check the attenuation parameters according
to the factory setting.
+ Loss of flame: Operation
Shut-down of the boiler operation
Check the fuel control in the tank (fuel
shortage or bridging).
Check fuel feeder function.
Check the attenuation parameters according
to the factory setting.
Fault is unblocked by
switching passive option to active option
and confirming by pressing
(F).
+ Loss of flame: Setback
Shut-down of the boiler operation
+ Low boiler temperature
Shut-down of the boiler operation
The control unit may report the following faults of the sensors:
xxx:
Interrupted, Not connected, Short circuit, Above the range, Under the range, Without output
*Note:
Boiler sensors do not perform the function of the signalling equipment. If the floor heating is used, it
must be secured by an external thermostat. Otherwise, in the case of manual opening of the three-
way valve the floor heating may be damaged.
6.3
Switchboard
Fig.
№
. 27
Switchboard
1. Cable gland ABB (thermoplastic)
