BOILER STATUS
MALFUNCTION
PROBABLE CAUSE
SOLUTION
Red light no. 9 is flashing and the
boiler has not shut down.
Boiler will automatically resume
operation as soon as the problem is
solved
Boiler water temperature has excee-
ded 85°C
Water is not flowing in the system: pi
-
pes are clogged, thermostatic valves
are closed, intercepting valves in the
system are closed
Check the system
Pump is blocked or faulty
Check the pump
Plate heat exchanger is clogged
Check the plate heat exchanger
Boiler is not supplying DHW
Flow meter is not operating
The system has not sufficient pressu
-
re or flow rate
Check DHW system
Check flow meter filter
Flow meter sensor is faulty or discon-
nected
Replace or reconnect it
Flow meter is blocked
Replace it
Burner does not ignite and the boiler
has not shut down (BTFS model only)
Flue gas pressure switch is not con-
senting to boiler operation. Boiler will
automatically resume operation as
soon as the problem is solved
Flue gas pressure switch is faulty
Check flue gas pressure switch ope
-
ration: replace when faulty
Silicone pipes are disconnected or
damaged
Reconnect or replace as necessary
Air inlet or flue gas discharge flow is
not adequate
Check air inlet/flue gas discharge
ducts: clean or replace as necessary
Fan is faulty
Replace it
PCB is faulty
Replace it
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