Ecoflam MAX 1 R Low Nox Manual De Uso página 17

Service
- Troubleshooting
Fault diagnosis and repair
In the event of a malfunction, first check
that the prerequisites for correct operation
are fulfilled:
1. is the system connected to the power
supply?
2. is there oil in the tank?
3. are all shut-off valves open?
4. are all control and safety devices,
such as the boiler thermostat, low-water
detector, limit switch, etc.
adjusted correctly?
If the malfunction persists, use the
following table.
It is not permitted to repair any
components relevant to safety.
Fault
420010527500
These components must be replaced by
parts with the same order number.
Only use original spare parts.
NB: after each operation:
• under normal operating conditions
(doors closed, hood fitted, etc.), check
combustion and check the individual
lines for leaks.
• Record the results in the relevant
documents.
Symbol fault
No heat request
Burner does not start after
thermostat shutdown.
No malfunction indicated
on the automatic
combustion control unit.
Burner starts at switch-on
for very short period and
then shuts down
and the red
LED lights up
Burner starts and then
shuts down after
preventilation
Burner starts and then shuts
down after the solenoid
valves have opened
Flame extinguishing
during operation
Cause
Thermostats defective or
incorrectly adjusted
Drop in supply voltage or
power failure.
Control unit malfunction
The control unit has been
intentionally locked
Flaring during pre-ventilation or
pre-ignition
No flame signal at end of
safety time
Flame goes out during
operating phase
E-BCU display interface must be used
to read the faults by service personell.
Remedy
Adjust the thermostats, replace if necessary.
Check the cause of the fall in voltage or the
power failure.
Replace the control unit.
Reset control unit.
Check ignition sparks/adjust or replace
electrode
Check/replace fuel-oil solenoid valve
Check the oil level in the tank.
Top tank up as required.
Open the valves.
Check the oil pressure and the operation of
the pump, coupling, filter, solenoid valve.
Check ignition circuit, electrode adjustment.
Clean/replace electrodes.
Clean/replace flame monitor.
Replace the following items as required:
Ignition electrodes/ignition cables/ignition
transformer/nozzle/pump/solenoid valve/
automatic combustion control unit.
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EN
17