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