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Phases key (Fig. 12 on page 18):
Phase
Function
number
LOC
Switching off phase lockout
OFF
Standby, awaiting heat request
oP
Part 1: Load controller request OPEN
Part 2: fan motor modulation speed towards high
flame
Part 3: high flame reached
Part 4: load controller request CLOSED
Part 5: fan motor modulation speed towards low
flame
Part 6: low flame reached
10
Settling time, fan motor standby speed
21
Safety valve ON, air pressure switch in load absence
position
Check that the POC is closed and that the fan motor
speed has been reduced to 0
22
Part 1: fan motor ON
Part 2: specified time air pressure switch
Message (timeout), air pressure switch stabilisation
24
Settling time, fan motor pre-purging speed
30
Part 1: pre-purging time without flame simulation test
Part 2: pre-purging time with flame simulation test
(2.1 seconds)
36
Stabilisation time at ignition speed
38
Spark pre-ignition time
40
Post-ignition time, parameter 257 + 0.3 seconds
42
Flame detection
44
Interval: end of time for safety ignition and load con-
troller reset (modulation start)
72
Settling time speed, fan motor pre-purging speed
74
Part 1: the operation is finished, check that the post-
purging has been programmed
Part 2: post-purging time
90
Min pressure switch open--> switching off safely
*1
Test valve, if P241 = 1 after each ON, lockout or
P234 (post-purging time) = 0 seconds
*2
Test valve, if P241 = 1 and P234 (post-purging time)
>0 seconds
20152192
Technical description of the burner
Tab. L
20
GB
4.11.1 Indication of the diagnostic mode
The reset button (info button) is the key element
nfo
for resetting the burner control and activating/de-
activating the diagnostic functions.
Red
The multi-colour indicator lamp is the key indica-
Yellow
tor of the visual diagnostics.
Green
LED
Both the reset button and the indicator lamp are on the control
panel.
There are 2 diagnostic options:
1
Visual diagnostics: Indication of the operating status or diag-
nostics of the cause of the fault
2
Diagnostics: From BCI to AZL2... operating and display unit
Visual diagnostics:
During normal operation, the various operating conditions are
shown in the form of colour codes based on the table shown be-
low (Tab. M).
Indication of the operating status
During start-up, the status indication is based on Tab. M:
Table of colour codes for multi-colour indicator lamp
Status
Standby time,
other waiting modes
Ignition phase,
controlled ignition
Operation,
flame o.k.
Operation,
flame not o.k.
Burner start-up
extraneous light
Undervoltage
Fault, alarm
Output error code
(see error code
Tab. X on page 61)
Diagnostics interface
Heat request
New program
board
Key (Tab. M)
........
Always on
OFF
Colour code
...............................
...............................
Green blink
Yellow -
...............................
Red blinking
Red blinking
...............................
Yellow - Red
Red
Yellow
Green
Colour
OFF
blink
yellow
Green
Green-
Red
Red
Red
light
Yellow
Yellow
Tab. M
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