Burner Start-Up Cycle Diagnostics; Operating Fault Diagnostics - Riello PRESS GBW BIO Installation, Use And Maintenance Instructions

FAULT
Smoke in flame - dark Bacharach
- yellow Bacharach
Dirty combustion head
9.1

Burner start-up cycle diagnostics

During start-up, indication is according to the Tab. N:
Sequences
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal
Electrical supply lower than ~ 170V
Lock-out
Extraneous light
Key:  Off  Yellow
9.2

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.
RED LED on
wait at least 10s
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:
SIGNAL
2 flashes

3 flashes

4 flashes

20033097
Faults - Possible causes - Solutions
PROBABLE CAUSE
- Not enough air ...................................................................... Adjust head and fan gate according to Manual
- Nozzle worn or dirty............................................................... Replace
- Nozzle filter clogged .............................................................. Clean or replace
- Erroneous pump pressure ..................................................... Adjust to between 10 - 14 bar
- Dirty fan ................................................................................ Clean
- Flame stability spiral dirty, loose, or deformed ...................... Clean, tighten in place, or replace
- Boiler room air vents insufficient ........................................... Increase
- Too much air ......................................................................... Adjust head and fan gate according to Manual
- Nozzle or filter dirty................................................................ Replace
- Unsuitable nozzle delivery or angle....................................... See Recommended nozzles
- Loose nozzle ......................................................................... Tighten
- Impurities on flame stability spiral ......................................... Clean
- Erroneous head adjustment or not enough air ...................... Adjust as per Manual instructions; open gate valve
- Blast tube length unsuited to boiler ....................................... Contact boiler manufacturer
Green
  Red
Press reset
for > 3s
The flame does not stabilise at the end of the safety time:
– faulty photocell;
– faulty or soiled light-oil valves;
– neutral/phase exchange;
– faulty ignition transformer
– poor burner regulation (insufficient gas oil).
Min. air pressure switch does not close:
– air pressure switch faulty;
– air pressure switch incorrectly regulated;
– max. air pressure switch triggered (if installed).
Min. air pressure switch does not open or light in the chamber before firing:
– air pressure switch faulty;
– air pressure switch incorrectly regulated.
Pulses

PROBABLE CAUSE
36 GB
SUGGESTED REMEDY
Colour code







Interval
Pulses
3s

Tab. N