Overview Of Diagnostics Codes - Vaillant ecoTEC plus 806 VU GB 806/5-5 Installation And Maintenance Instructions Manual

Appendix
B

Overview of diagnostics codes

Code Parameter
D.000 Heating partial load
D.001 Overrun time of internal heating
pump for heating mode
D.002 Max. burner anti-cycling time heating
at 20 °C flow temperature
D.005 Flow temperature target value (or
return target value)
D.006 Hot water temperature target value
D.007 Warm start temperature target value
D.010 Heating pump status of the pump
group
D.011 Status of external heating pump
D.014 Pump speed target value (high-
efficiency pump)
D.016 24 V DC room thermostat
open/closed
D.017 Heating flow/return temperature
control changeover
D.018 Pump operating mode setting
D.022 Hot water demand via C1/C2, in-
ternal hot water control system
D.023 Summer/winter mode (heating off/on)
D.025 Hot water generation enabled by
eBUS controller
D.026 Auxiliary relay control
38
Values or explanations
Adjustable heating partial load in kW
Auto: Product automatically adjusts max. partial load to
current system demand
2 ... 60 min
2 ... 60 min
In °C, max. of the value set in D.071, limited by an eBUS
controller if connected
35 ... 65 ℃
40 ... 65 ℃
Frost protection is at 15 °C, then 40 to 70 °C (max.
temperature can be adjusted under D.020)
0 = Off
1 = On
0 = Off
1-100 = On
Heating circuit pump target value in %
0 = Auto
1 = 53
2 = 60
3 = 70
4 = 85
5 = 100
0 = Room thermostat open (no heating mode)
1 = Room thermostat closed (heating mode)
Control type:
0 = Flow, 1 = Return
1 = Comfort (continuously operating pump)
3 = Eco (intermittently operating pump)
0 = Off
1 = On
0 = Heating off (Summer mode)
1 = Heating on
0 = Off
1 = On
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
Installation and maintenance instructions ecoTEC plus 0020134823_04
Default Own setting
setting
Auto
5 min
20 min
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Auto
Not ad-
justable
0 = Flow
3 = Eco
Not ad-
justable
Not ad-
justable
Not ad-
justable
2 = External
pump