Control System Sequence - DeDietrich MODULENS O AFC 18 Installation And Service Manual

AFC 18 - AFC 24 - AFC 30
After Sales level - #METERS
Parameter Description
Number of hours' burner operation since the last service
RUNTIME REV.
NB.FLAME DISAP. Number of flame losses
Number of incomplete burner start-ups
NB FAIL START

Control system sequence

Status Operation
0 Rest
1 Boiler start (Heat demand)
2 Burner start up
3 Boiler on heating service
4 Boiler operating domestic hot water
5 Burner stop
6 Switching off the boiler (End of heat demand) 60
8 Stop
9 Blocking
09/07/2015 - 300026439-07
9.6.1. Control system sequence
Sub-status Operation
0 Standby
1 Anti-short cycle activated
2 Open isolating valve
3 Boiler pump or domestic hot water start-up
4 Wait for the correct temperatures for burner start
10 Opening of the flue gas valve / Oil valve
11 Opening of the flue gas flue damper
12 Burner start up
13 Preheating
14 Pre-ignition
15 Pump modulation start-up
16 Post-ignition
17 Flame stabilisation
30 Nominal internal set point
31 Limited internal set point
32 Normal output check
33 Temperature protection gradient level 1 (Modulate down)
34 Temperature protection gradient level 2 (Part load)
35 Temperature protection gradient level 3 (Blockage)
37 Temperature stabilisation time
30 Nominal internal set point
31 Limited internal set point
32 Normal output check
33 Temperature protection gradient level 1 (Modulate down)
34 Temperature protection gradient level 2 (Part load)
35 Temperature protection gradient level 3 (Blockage)
37 Temperature stabilisation time
40 Burner off
41 Post-ventilation
42 Close flue damper
43 Closure of the flue gas flue damper
Post-operation time delay on the boiler pump or domestic
hot water back-up tripped
61 Boiler pump or domestic hot water stopped
62 Close isolating valve
63 Start anti short cycle
0 Wait for burner start
1 Anti-short cycle activated
XX Shutdown code xx
9. Troubleshooting
159