23
19
. TROUBLESHOOTING
This section provides a list of the most common burner and boiler failures.
19.1
Burner error code
We have already mentioned that the burner is equipped with a cut-out system, indicated by the
reset button light. It may cut out accidentally, and in this case the steady red light on this button
will come on. You may unblock it by pressing the button for approx. 1 second. When the burner is
blocked and the steady red light is on, visual failure diagnosis may be activated, in accordance with
the error code table. To enter visual failure diagnosis mode, hold down the reset button for at least
three seconds.
Error code table
Red flashing LED code
"AL" on term.
10
Possible cause
Flashes 4 times
On
No flame established when ignition safety time ends.
- Fuel valves defective or dirty
- Flame detector defective or dirty
- Burner maladjustment, no fuel
- Ignition unit defective
Flashes 4 times
On
External light during burner ignition
Flashes 7 times
On
Excessive flame loss during functioning (limited number of
repetitions)
- Fuel valves defective or dirty
- Flame detector defective or dirty
- Burner maladjustment
Flashes 8 times
On
Supervision of fuel pre-heater time
Flashes 10 times
On
Cabling fault or internal failure, output contacts, other
failures
During the failure diagnosis time, the control outputs are disabled and the burner remains off.
To exit failure diagnosis and activate the burner again, reset the burner control. Hold down the
reset button for approx. 1 second (<3 s).
19.2
Boiler failures
FAILURE CAUSE
SOLUTION
- The pump is not turning
Unblock the pump
RADIATOR DOES
NOT HEAT UP
- Air in hydraulic circuit
Drain the installation and the
boiler (the automatic air bleed
valve cap must always be
loose)
- Burner badly adjusted
Correctly adjust it
- Flue not correctly sealed
Eliminate any leaks
- Flame unstable
Examine the burner
EXCESSIVE NOISE
- Flue not insulated
Suitably insulate it
19.3
Thermostat
Fumes temperature
safety thermostat (TH)
Boiler temperature
safety thermostat (TS)
If the boiler goes into safety lockout due to overheating of the boiler (TS) or fumes (TH), reset by
pressing the appropriate button on the thermostat. To access the buttons, unscrew the black cap.
Summary of Contents for SIRENA CAL HFD
Page 1: ...INSTALLATION AND OPERATING INSTRUCTIONS SIRENA CAL HFD ER 0170 1996 CGM 04 392 ...
Page 28: ...Sirena Cal HFD 26 NOTES ...
Page 29: ...27 NOTES ...
Page 30: ...Sirena Cal HFD 28 NOTES ...
Page 31: ...29 NOTES ...
