Diagnostic Modes - Vaillant TURBOmax Plus SERIES Instructions For Installation And Servicing

Diagnostic Modes

In order to assist with the pinpointing
of a particular fault it is possible to
use the boiler display in a diagnostic
mode to interrogate the boiler about
the status of certain components.
Press the „i" and „+" buttons
below the display simultaneously.
The display will now show „d.00".
Display
d.00 Part load setting
d.01 Water pump over run
Maximum burner anti cycling period at 20 °C
d.02
flow temperature
d.03 Not applicable
d.04 Not applicable
d.05 Flow temperature setting
d.06 Not applicable
1. Vantage hot water temperature
(not applicable)
d.07*
2. Warmstart temperature setting
(applies to TURBOmax Plus only)
d.08 External controls heat demand
d.09 Not applicable
d.10 Pump status
d.11 External pump status
d.21 Flame rectification
d.22* Domestic hot water demand
d.23 Summer/winter function (control knob)
d.24 Air pressure switch
d.25* Warmstart status (TURBOmax Plus)
d.30 Gas valve status
d.35* Diverter valve position (THERMOcompact)
Table St.2: Diagnostic Modes 1 of 2
Use „+" or „-" buttons to scroll up
or down to the desired diagnosic
number.
Press „i" button to display the
corresponding diagnosic
information.
If necessary, you can now alter the
value by pressing „+" or „-"
buttons. (When altering values
display will flash). Press and hold
the "i" button to save the value to
memory, when the value is saved
the display will stop flashing.
Indication
* TURBOmax Plus only
FAULT FINDING
Diagnosic mode is cancelled as
follows:
Press the „i" and „+" buttons
simultaneously
or
Do not press any key for
approximately four minutes. The
display will now revert back to
showing the current flow
temperature.
Displayed values/adjustment values
0, 1, 2 ...15 (factory-adjusted to 15 = max. rating)
1, 2, 3, ...60 min (factory adjusted setting: 5 min)
8 - 60 min (predelivery setting: 15 min)
°C
1. 15 - 75 °C
2. 40 - 65 °C
0 = open, no demand
1 = closed, demand
1 = ON
0 = OFF
1 = ON
0 = OFF
1 = ON
0 = OFF
1 = ON
0 = OFF
1 = winter
0 = summer
1 = Closed
0 = Open
1 = ON
0 = OFF
1 = ON
0 = OFF
1 = hot water
0 = heating system
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