Fondital TAHITI CONDENSING KC24, Инструкция по установке, эксплуатации и обслуживанию

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6. Troubleshooting
BOILER STATUS MALFUNCTION PROBABLE CAUSE SOLUTION
The boiler has shut down, and no. 5 led
(red) is flashing.
Turn selector 9 to reset position in order
to resume boiler operation
Burner does not ignite
Gas supply failure
Check gas pressure.
Check gas stopcocks to be open and gas
network safety valve intervention.
Gas valve is disconnected Reconnect it
Gas valve is faulty Replace it
PCB is faulty Replace it
Burner does not ignite: no spark
Spark electrode is faulty Replace the electrode
Ignition transformer is faulty Replace ignition transformer
PCB does not ignite: it is faulty Replace PCB
Burner ignites for a few seconds and
goes off
PCB does not detect flame: inverted phase
and neutral Verify correct neutral and phase connec-
tions
Flame detection electrode wire is discon-
nected or faulty Connect flame detection electrode wire
or replace it
Detection electrode is faulty Replace electrode
PCB does not detect flame: it is faulty Replace PCB
Ignition heat output value set point
is too low
Increase it
Minimum heat input is not set correctly Check burner adjustment
The boiler has shut down and no. 4 LED
(red) is flashing.
Turn selector 9 to reset position in order
to resume boiler operation
Flue gas thermostats are not consenting
to operation
Flue gas thermostats are faulty
Check flue gas thermostats: replace them
if faulty
Inadequate air intake or flue gas dischar-
ge flow Check air intake/flue gas discharge ducts:
clean or replace
Fan is not correctly operating Check fan
PCB is faulty Replace it
The boiler is not operating, no. 3 LED
(red) is flashing.
Boiler will resume operation when
selector 9 is brought to reset position
and CH water temperature goes back to
normal parameters
Boiler safety thermostat has intervened
CH water does not flow: pipes might be
clogged, thermostatic valves might be
shut, system stopcocks might be closed
Check CH system
Pump is stuck or faulty Check the pump
Flow probe sends faulty signals Check flow probe
The boiler is not operating, no. 7 LED
(red) is flashing.
Boiler will automatically resume operation
as soon as malfunction ends
Flow water temperature has exceeded
85°C Inadequate water flow in the sy-
stem
Check the pump
Check CH system
The boiler is not operating, no. 6 LED
(red) is flashing.
Boiler will resume operation as soon as
CH water flow is restored
CH water does not flows
Insufficient water in CH system Load CH system
CH system is leaking Check CH system
Primary flow switch is disconnected Reconnect it
Primary flow switch does not intervene:
it is faulty
Replace it
The boiler is not operating, no. 3 (red) and
no. 8 (yellow) LEDs are simultaneously
flashing.
Boiler will automatically resume operation
as soon as malfunction ends
Fan is not correctly operating
Fan is not correctly connected Check the fan
Fan is faulty Replace it
The boiler is not operating, no. 2 (red)
and no. 8 (yellow) LED are simultaneously
flashing.
Boiler will automatically resume operation
as soon as malfunction ends
Flow probe is not operating
Flow probe is disconnected Reconnect it
Flow probe is faulty Replace it
No. 2 LED (red) is flashing.
Boiler will automatically resume operation
as soon as malfunction ends
DHW probe is not operating
DHW probe is disconnected Reconnect it
DHW probe is faulty Replace it