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SM FP_Australia 2017/04 EN
Lock Out Error
Burner shutdown after safety time elapsed (3 + 3 tentative)
Information about ionization
Ionization current at standby = 0 µA (initial condition for startup ignition sequence)
With the appliance working, the normal value is ≈ 6 µA (condition for detection by control unit > 0,8 µA)
Sequence is identified below:
P – Purge / I – Ignition
Startup ->
I (5s) -> P (3s) -> I (5s) -> P (3s) -> I (5s) -> P (8s) -> Total time of 29 sec
I (5s) -> P (3s) -> I (5s) -> P (3s) -> I (5s) -> P (8s) -> Total time of 29 sec
Lock Out indication “EA”
No flame in the
burner?
Spark is visible?
Gas supply closed?
Open gas cock to the
appliance
Yes
No
Contact gas supplier or
check gas meter and
safety shut off valve
No gas at apartment?
Yes
Yes
Yes
No
Problem solved?
Measure static inlet gas
pressure
Gas valve not releasing
gas to burner
Safety Gas valve
connections
disconnected?
Assure Connection and
measure resistance
SV1
– Blue Wires (≈ 100Ω)
SV2
– White Wires (≈ 100Ω)
SV3
– Black Wires (≈ 100Ω)
No
Yes
Solenoid signal to open
is not ok?
No
Measure Voltage signal
(Between 20
– 24 V dc)
Replace control Unit
No
Ensure gas flow
according model power
In case of defective
solenoid, refer to spare
part list and replace
gas valve
Yes
Failure in spark due to
a defective / damaged
electrode
Ensure the 2 red ignition wires
are in contact and connected to
control unit / electrode
Problem
solved?
Replace ignition
wires / electrode
Yes
End
No
