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BURNER START-UP CYCLE DIAGNOSTICS
During start-up, indication is according to the followin table:
OPERATING FAULT DIAGNOSTICS
The control box has a self-diagnostic system, which easily allows identifying the operating faults (RED LED signal).
ITo use this function, wait at least ten seconds from the safety lock out, and then press the reset button for a minimum of 3 seconds.
After releasing the button, the RED LED starts flashing as shown in the diagram below.
The pulses of the LED constitute a signal spaced by approximately 3 seconds.
The number of pulses will provide the information on the possible faults, according to the table below:
COLOUR CODE TABLE
Sequences
Colour code
Pre-purging
● ● ● ● ● ● ● ● ● ● ●
Ignition phase
● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ●
Operation, flame ok
❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Operating with weak flame signal
❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍
Electrical supply lower than ~ 170V
● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ●
Lock-out
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
Extraneous light
▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲
Key:
❍
Off
●
Yellow
❑
Green
▲
Red
SIGNAL
PROBABLE CAUSE
2 flashes
The flame does not stabilise at the end of the safety time:
– faulty photocell;
– faulty or soiled oil valves;
– neutral/phase exchange;
– faulty ignition transformer
– poor burner regulation (insufficient gas oil).
3 flashes
Min. air pressure switch (if installed) does not close:
– air pressure switch faulty;
– air pressure switch incorrectly regulated;
– max. air pressure switch triggered (if installed).
4 flashes
Min. air pressure switch (if installed) does not open or light in the chamber before firing:
– air pressure switch faulty;
– air pressure switch incorrectly regulated.
7 flashes
Loss of flame during operations:
– poor burner regulation (insufficient gas oil);
– faulty or soiled oil valves;
– short circuit between photocell and earth.
8 flashes
– Oil enabling thermostat fault;
– Break in heating elements.
10 flashes
– Wiring error or internal fault;
– Presence of electromagnetic disturbance: use the radio disturbance protection kit
RED LED on
wait at least 10 s
Press button
for > 3 s
Signal
Signal
Interval
3 s
Содержание P 300 T/G
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