Honeywell Krom Schroder PFU 780 Technical Information page 23

Parameters
Parameter 33 = 3
08 08
When High temperature mode is ended, the burner re-
mains in operation and the PFU performs flame control
again (recommended in the case of ionisation control or
UV control with UVD).
If no flame signal is present when High temperature
mode is ended, the burner control unit performs a fault
lock-out, regardless of parameter 33.
Fault, pilot burner
04 04
PFU 780 · Edition 02.12l
88
30a
26e
10e
1
28c
22a
DI
16c
V1
26a
1
2c–4c
1
14a
2
18e
V2
18a
2
6a–6e
2
2e–4e
t
88
30a
26e
10e
1
28c
22a
DI
16c
V1
26a
1
2c–4c
1
14a
2
18e
V2
18a
2
6a–6e
2
2e–4e
t
Fault, main burner
08 08
Parameter 33 = 4
08 08
If the flame fails during high temperature operation, the
ready contact is opened for the duration of the flame
failure.
When High temperature mode is ended, the burner re-
mains in operation and the PFU performs flame control
again (recommended in the case of ionisation control or
UV control with UVD).
88
30a
26e
10e
1
28c
22a
DI
16c
V1
26a
1
2c–4c
1
14a
2
18e
V2
18a
2
6a–6e
2
2e–4e
t
88
30a
26e
10e
1
28c
22a
DI
16c
V1
26a
1
2c–4c
1
14a
2
18e
V2
18a
2
6a–6e
2
2e–4e
2a–4a
t
23