40
Er42 Air flow/mass sensor
During the Check Phase Up
the boiler makes the exhaust
capacity diagnosis.
The maximum reference
value has been exceeded
Maximum air flow reached,
excessive chimney draft.
The use of swivels or
fans in the chimney is
not allowed.
Er44 Open door error
Check door lock or ash
drawer.
Check the cord.
Er56 Hydraulic scheme different
from boiler configuration
SerU Notifies that the planned
hours of operation
(parameter T66) are reached.
Periodic review is required.
Call a technician for
maintenance and
service message reset.
