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Code and description
F04 (lock out error)
Ignition error
Three unsuccessful
ignition attempts.
0312582_EcoSword_V4.0, 03-05-2021
Cause
No gas.
Air in the gas pipes.
Defect in the hot surface igniter circuit.
Defect in the ionisation circuit.
Supply voltage too low.
Bent flame probe is in contact with
metal surface.
Ceramic part, of the flame probe, is
broken or cracked.
Measure
-
Make sure that the main gas supply
valve is open. If necessary, open the
valve.
-
Make sure that the manual gas supply
valve, before the gas control valve, is
open. If necessary, open the valve.
-
Make sure that the gas supply
pressure to the gas control valve is
correct, refer to Gas supply pressure
(see 8.9.3).
-
Bleed the air out of the gas pipe.
-
Make sure that the gas supply
pressure to the gas control valve is
correct, refer to Gas supply pressure
(see 8.9.3).
-
Make sure that the hot surface igniter
is installed correctly.
-
Make sure that the wiring of the hot
surface igniter is not damaged.
-
Measure the resistance across the hot
surface igniter. This must be between
the 36 and 72 Ohm (at room
temperature).
-
Make sure that the hot surface igniter
lights up during ignition.
If necessary, replace the hot surface igniter.
-
Make sure that the flame probe is
installed correctly.
-
Make sure that the wiring of the flame
probe is not damaged.
-
Measure the ionisation current. This
current must be a minimum of 3 μA
(parameter 109).
If necessary, replace the wiring and/or
flame probe.
-
Make sure that the supply voltage on
the controller is correct.
-
If the supply voltage is below the
stated tolerance and the error
persists, contact your maintenance
and service engineer.
-
Install an isolating transformer.
-
Make sure that the flame probe is not
bend.
-
If necessary, replace flame probe.
-
Make sure that the ceramic part of the
flame probe is not broken or cracked
in the vicinity of the burner.
-
If necessary, replace flame probe.
75
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