E.C.A. Fortius Service Manual page 39

Chimney Sweep Push-Button PB4
Chimney sweep push-button PB4 has two functions:
a) to activate the chimney sweep mode,
b) to activate the minimum and maximum running mode without modulation.
Chimney Sweep Mode
a
- If the push-button PB4 is pressed more than 3 seconds and less than 5 seconds, chimney sweep
mode is activated (fig. 21a).
- Appliance operates in maximum load without modulation.
- The chimney sweep mode remains activated for 20 minutes (fig. 21b) or it can be deactivated by
pressing the push-button again more than 3 seconds and less than 5 seconds (fig. 21c). If chimney
sweep mode is started in stand-by mode, the system goes back to stand-by mode after the
deactivation of chimney sweep mode.
after
20 min
Running Mode
b
- Running mode selection is activated by pressing the push-button PB4 more than 5 seconds
(fig. 22a). It is possible to operate the appliance in minimum or maximum load without modulation
by turning the CH potentiometer for selection.
- After pressing the PB4, the appliance will operate in minimum or maximum load depending on
the position of the CH potentiometer.
Chimney sweep mode is active.
L1 L2 L3
ON OFF
fig. 21a
L1 L2 L3
ON OFF OFF
fig. 21b
L1 L2 L3
ON OFF OFF
fig. 21c
7 segment
L7
display
88
OFF
Stand – by
7 segment
L7
display
88
OFF
Stand – by
7 segment
L7
display
88
OFF
L8 L9
fast
OFF
blink
L8 L9
OFF OFF
L8 L9
OFF OFF
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