Cuenod NC4, Инструкция по эксплуатации

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12/2008 - Art. Nr. 4200 1013 9300A 37
Maintenance
Troubleshooting
In the event of a fault
• Check the following:
- power supply (power and control),
- the fuel supply (quantity and valve
opening),
- the regulation components,
- the position of the switches on the
control panel.
Otherwise:
• Press
BP1 , the fault pictogram is
displayed (see table)
Safety components must not be repaired
but replaced by identical items.
Only use manufacturer spare parts.
Note:
After each operation:
• Check the combustion, and that the
various circuits are leak tight.
• Record the results in the relevant
documents.
Symbol Fault Cause Corrective action
The thermostat for the
reheater cannot be closed (in
400s) Defective reheater thermostat
Defective reheater
Replace the reheated line
Burner does not start after
thermostatic closure.
Unit does not signal any fault. Low or no power supply
Defective unit.
Check source of low or missing voltage
Change unit
The burner starts up briefly
when the power supply is
switched on The unit has been manually
locked. Unlock the unit.
The burner was operating at a
steady rate Flame disappears during
operation Clean, replace the flame monitor
Adjust the combustion
Change the control unit
The burner locks during the
preventilation or pre-ignition
phase Flare during preventilation and
pre-ignition. Clean or replace the solenoid valve, or
the pump if the solenoid valve is
integrated.
The burner malfunctions at
the end of the safety time No flame at the end of the safety
time. Check fuel oil level in tank. Fill if
necessary.
Open the valves.
Check, adjust the pressure if boost.
Check pump operation and pressure,
the coupling, the filter and the solenoid
valve.
Check the ignition circuit, electrodes
and their settings.
Electrodes are to be cleaned.
Replace if necessary:
the electrodes, the ignition cables, the
high voltage transformer and the
nozzle.
flashing
pictogram