18
E
.
3
0
.0
7
.0
7
•
G
.
0
7
.0
6
.1
1
Process description
Start-up tests
Processor and program memory test / move actuator drives to reference position
State 01
Start-up decision (heating request present)
State 02
Blower idle state check
State 03
Blower start-up
State 04
Preventilation / operation of gas flap actuator over speed range
State 05
Preventilation / activate and test watchdog
State 06
Preventilation / move gas flap actuator to ignition position
State 07
Move air flap actuator to ignition position
State 08
Pre-ignition depending on parameters
State 09
Start-up safety period
State 10
Stabilisation period
State 11
Move positioning drive from ignition point to operating characteristic
State 12
Operation
State 13
VPS - evacuate valve cavity / (post-ventilate)
State 14
Test duration Y2 / (remaining post-ventilation time)
State 15
VPS - fill valve cavity / (remaining post-ventilation time)
State 16
Test duration Y3 / (remaining post-ventilation time)
State 17
Remaining post-ventilation time
State 18
Restart disable time / waiting loop for low gas program
State 20
Standby position
5AH
Internal hardware fault
5CH
Internal hardware fault
5DH
Internal hardware fault
5EH
Internal hardware fault
63 h
Internal hardware fault
64 h
Internal hardware fault
65 h
Internal hardware fault
67 h
Internal hardware fault
68 h
Incorrect feedback from air flap positioning drive
(check connector and cable, actuator drive mounting and air flap mechanism)
6AH
Air-flap actuator position is out of tolerance
(check connector and cable, actuator drive mounting and air flap mechanism)
6CH
Internal hardware fault
6DH
Internal hardware fault
6EH
Actuator drive interchanged or incorrectly connected
6FH
Burner detection error
70 h
Internal hardware fault
71 h
Internal hardware fault
73 h
Internal hardware fault
74 h
Internal hardware fault
75 h
Internal hardware fault
76 h
Internal hardware fault
77 h
Internal hardware fault
78 h
Internal hardware fault
79 h
Internal hardware fault
Code
Description
