Systema K21 - Electronic Device Malfunctions and Solutions

32
Rev. 12GB0712
SYSTEMA S.p.A.
AIRTIGHT GAS CONVECTORS
3.14 Malfunctions and solutions for electronic devices (Mod. K21E, K28E,
K40E, K55E, K28VE, K40VE, K55VE, K21FE, K28FE, K40FE, K55FE)
DEFECTS CAUSES SOLUTIONS
1. The “red” lock-out light swit-
ches on.
a) There is no gas or the pressure is
too high.
a) Check the supply pressure on the
valve (5 Draw 30a).
b) There is no electrical spark dis-
charge on the burner.
b) Check the condition of the starting
electrodes, the respective spark
detection system, and the position
of the starting electrodes.
c) The electric polarity of the neutral
phase has been inverted.
c) Invert the polarity of the neutral
phase.
d) The device has not been correctly
grounded.
d) Ground the device correctly.
e) There is a malfunction in the elec-
tronic unit (in most cases this is
due to electrical discharges produ-
ced by lightning. We recommend
disconnecting the electrical power
supply during periods when the
device will not be used.
e) Replace using original spare parts.
f) Air is present in the pipes and cau-
ses the device to lock-out after 10
seconds of discharge on the bur-
ner.
f) Switch the bipolar switch equipped
with the “orange l.e.d.” off and on
to reset.
g) The centrifugal fan positioned in
the combustion air suction circuit
is malfunctioning (no starting
occurs).
g) Replace using original spare parts.
h) failure of one or both coils of gas
solenoid valve.
h) Replace with an original spare part
i) failure of the redresser bridge of
gas solenoid valve
i) replace with an original spare part
2. The tangential fan for the supply
of surrounding air fails to start
working.
a) The fan is jammed.
a) Check and remove all foreign
objects.
b) The fan motor is malfunctioning. b) Replace the entire fan-motor unit.
c) The fan triggering thermostat is
malfunctioning (this can be chec-
ked by making an electric bridge
on the thermostat itself).
c) Replace the fan triggering thermo-
stat (38 - 40 °C) using original
spare parts.
3. Main burner with the flame
which is detaching
a) Gas pressure at the nozzle too
high
a) Regulate the pressure at the nomi-
nal value using the 4 intake (Draw
30)
b) Wrong nozzle.
b) Replace the nozzle with the one
corresponding to the gas actually
used
c) Exhaust pipe not correctly connec-
ted between the cast iron body
and the external terminal
c) Verify the seal of the connection
d) Obstructed terminal d) Clean the terminal