Weishaupt W-FM 25, Manual

Page: 66 / 72

9 Technical documentation
9.1 Program sequence
Display Operating phase Condition
F .. 00 Fault present
OFFUPr
UPrGAS
UPrOIL
01 Waiting in unprogrammed condition
OFF
OFFGAS
OFFOIL 02
Waiting for heat demand
1 03 Extraneous light check
2
04
Shutdown check air pressure switch
05 Initialisation W-FM
06 Waiting for start release
07
Internal sequence
08 Driving air damper actuator to pre-purge
3
09 Waiting for speed standardisation confirmation
10 Start burner motor
11 Waiting for air pressure
4
12
Pre-purge
13 Internal sequence
5 14 Driving to ignition position
6
15
Gas pressure check on low / valve proving gas pressure switch
16 Pre-ignition
7
17
First safety time - fuel release
18 First safety time - flame detection
8
19 First stabilisation time
20
Stop setting mode: P0 -A
21 Second safety time
22 Second stabilisation time
23 End setting mode: P0 -B
9 24 Driving to partial load
10 25
Operation (load control is activated)
15
26 Internal sequence
27 Driving to partial load
28
Fuel valves close
29 Internal sequence
30
Start post burn time / post-purge
31 Post-purge contact dependent (X3:14)
32 Post burn time
16 33
Restart interlock
11 34 Valve proving - vent valve interspace
12
35 Valve proving - test time valve 1
36 Internal sequence
13 37 Valve proving - fill valve interspace
Installation and operating instruction
Replacing combustion manager W-FM 20 … 24 with W-FM 25
9 Technical documentation
83294002 • 2/2014-11 • La
66-70