Viessmann MatriX Service Instructions For Contractors page 31

Burner control unit
Menu point "5" is used to display the following process information:
Sub-menu point Process information
0 Phase
1 Not assigned
2 Flue gas temperature
3 Ionisation current
4 Set speed
5 PWM variable
6 Actual speed
7 Gas pressure switch 1
8 Gas pressure switch 2
9 Air pressure switch
A Gas valve 1
B Gas valve 2
Example: To display the ionisation current, press the
following buttons:
1. S longer than 2 s, " " flashes.
2. until "5" is shown under Service.
Menu point "6" is used to change the following operating parameters:
Sub- Parameter
menu
point
1 Maximum operational output
2 Gas type
3 Not assigned
4 Not assigned
5 Not assigned
6 Not assigned
0 Reset all operating parameters to their
delivered condition.
Example: To reduce the maximum operational output,
press the following buttons:
1. S longer than 2 s, " " flashes.
2. until "6" is shown under Service.
3. S "6" is displayed under Status.
4. S "1" is shown under Status and the current value
for the maximum operational output in % is
shown under Service.
(cont.)
Unit/scale
1
—
°C
I in 1/10
%
%
n in 10/min
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
3. S "5" is displayed under Status.
4. until "3" is shown under Service.
5. S "3" is shown under Status; under Service the ion-
isation current is shown during operation (e.g.
30 = 3.0 A).
µ
Unit/scale
% of rated output
0 = NG (natural gas)
1 = Not assigned
—
—
—
—
5. / for required maximum operational output.
Note
Observe the modulation range. See page 48.
6. S to confirm. If adopted successfully, "1" appears
under Service; if it failed, "0" will appear.
7. S to change to the operating display.
Burner control unit
A
μ
Delivered condition
100 %
0
—
—
—
—
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