Mark G(N)CT/RE, Техническое руководство

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yes
yes
Does the pneumatic
switch come up?
yes
yes
Does the flue gas fan
turn?
Is a 230V or 380V
power supply pre-
sent between termi-
nals N and L? Check the (main)
fuse plus the
operating switch,
if present.
yes
yes
no
Room thermostat
circuit has been
interrupted (between
terminals 3 and 2)
no
Isolating transformer
defect (if applicable)
no
no
Automatic is inter-
locked; check wiring
for the reset lamp
and reset button.
yes
Flue gas fan or relay
K1 is defective.
1 Air pressure pipes
are blocked or in
incorrect position.
2 Excessive resi-
stance along flue
piping
no
Does the reset lamp
light up?
no
Check connections
to the reset lamp
and reset button.
no
Is the pneumatic
switch in the off
position?
Burner is
operational.
Does the flame burn
continuously?
no
1 Air pressure pipes
are blocked.
2 Pneumatic
switch is defective.
no
1 Automatic burner
is defective
2 Gas valve is
defective.
yes
1 Ignition cable is disconnected.
2 Ignition electrode is dirty or not
properly in place.
3 Automatic burner is defective
1 no gas
2 air in the gas
3 Pilot valve (MK)
does not open.
no
1 Max. thermostat or safety
thermostat has been
interrupted either due to
interlocking or else
because it is defective.
(See the technical manual.)
2 Glass fuse is defective.
3 Locks the filter pressure
switch (where applicable).
no
yes
yes
yes
Is a power supply
present between
terminals 14 and 16?
yes
Is ignition achieved
after flushing out for
up to 60 seconds?
yes
yes
Is a flame produced?
Is a power supply
present between
terminals 13 and N?
Is the heater mal-
functioning? The flame is going
out due to the incor-
rect mounting or
type of flue gas
system.
yes
no no
Has the equipment
been properly
earthed?
no
Is the ionisation
current above 1,5
µA?
Automatic burner is
defective.
no
yes
yes
Check wiring and
adjustment of the
ionisation pin.
Have phase and
neutral been
swapped around?
Is 230V or 380V
present between
terminal CN1-6 and
terminal CN1-7 of
the automatic urner?
Does the lamp in the
reset button light up?
6.0 Trouble-shooting diagram
10