Mark SHOPHEATER Technisches Handbuch Seite 10

6.0 Troubleshooting diagram
Is there 230 V po-
wer supply between
terminals L1 and N
no
of the power supply
/ connector?
Is there (230 V)
power supply bet-
no
ween terminals
4 and 9 (JP2) of the
connection card?
Is there (230 V) po-
wer supply between
no
terminals 1 and 2
of the automatic
ignition control?
Is the Flue fan
no
motor working?
Does the air pressure
no
switch come on?
Does ignition
no
follow?
Is there a flame
no
available?
10
1. Check incoming power
supply.
2. Check the glass fuse
of the power supply /
connector
1. Room thermostat circuit
is broken or faulty.
2. Connection card fuse
is faulty.
3. STB Maximum tempera-
ture thermostat has
reacted, reset it.
Maximum temperature
thermostat faulty/
disconnected.
Is there power supply
no
between 11 and 12 of the
Automatic ignition control?
yes
Flue fan is faulty.
1. Air pressure lines are clogged or
in the wrong position.
2. Too much resistance in the flue
fan system.
3. Air pressure switch faulty.
Is the reset
no
lamp on?
yes
1. Ignition cable is broken.
2. Ignition electrode is dirty or faulty.
3. Automatic ignition control faulty.
1. No gas.
2. Air in the gaspipeline.
3. Gas valves do
not open.
Does the flame
no
Does the heater fail?
continue to burn?
yes
1. Have phase and neu-
Appliance is in
2. Separation transfor-
operation.
1. Ionisation cable is
broken.
2. Ionisation electrode
is faulty.
1. Burner malfunction.
2. Automatic control faulty.
3. Air pressure switch not in
rest position.
Reset lamp
is faulty.
1. Automatic ignition
control faulty.
2. Gas valve is faulty.
Flame chokes as a
result of incorrectly
no
fitted or incorrect
gas flue system.
yes
tral been exchanged?
Is the appliance
no
properly earthed?
mer is faulty
(if present)
Is the ionisation
no
current greater
than 3-4 µA?
Automatic ignition
control faulty.
yes
yes