Appendix; A Overview Of Diagnostics Codes - Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

Appendix

A Overview of diagnostics codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Code Parameter
D.000 Heating partial load
D.001 Pump overrun: Heating
D.002 Max. anti-cycl. time: Heating
D.003 Outlet temperature actual value
D.004 Cylinder temperature actual value
D.005 Heating target flow temperature
D.006 Outlet temperature target value
D.007 Comfort mode target value
APC target value
Cylinder temperature target value
D.008 Controller 3-4
D.009 eBUS controller target value
D.010 Internal pump
D.011 External pump
D.012 Cyl. charging pump
D.013 Circulation pump
D.014 Pump speed target value
D.015 Pump speed actual value
D.016 Controller 24 V DC: Heating mode
D.017 Control type
0020244995_02 ecoTEC pro Installation and maintenance instructions
Values or explanations
Adjustable heating partial load in kW
Auto: Product automatically adjusts max. partial load to
current system demand
1 ... 60 min
2 ... 60 min
In °C
In °C
In °C; the maximum value that is set in D.071 and is
restricted by means of an eBUS control if such a control
is connected
35 ... 65 ℃
Product with integrated domestic hot water generation,
and product with integrated domestic hot water genera-
tion and shift-load cylinder
35 ... 65 ℃
Product with heating mode only
Frost protection is at 15 °C, then 40 to 70 °C (max.
temperature can be adjusted under D.020)
Room thermostat open (no heat requirement)
Room thermostat closed (heat requirement)
In °C
On, Off
On, Off
On, Off
On, Off
Target value of internal high-efficiency pump in %. Pos-
sible settings:
0 = Auto
1 = 53
2 = 60
3 = 70
4 = 85
5 = 100
Actual value for internal high-efficiency pump in %
Heating mode off/on
Control type:
0 = Flow, 1 = Return
Return: Automatic detection function for heating output
inactive. Max. possible heating partial load when D.000
is on Auto.
Appendix
Default Own setting
setting
Auto
5 min
20 min
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
0 = Auto
Not ad-
justable
Not ad-
justable
0 = Flow
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