Smarter Heating & Hot Water

Vaillant D Codes New

CodeParameter / MeaningDisplay Values / adjustable value or explanationsFactory settingOwn settingArticle Page / Links D.000Heating partial loadAdjustable partial heat load in kW Auto: Product auto…

Code Parameter / Meaning Display Values / adjustable value or explanations Factory setting Own setting Article Page / Links
D.000 Heating partial load Adjustable partial heat load in kW
Auto: Product automatically adjusts max. partial load to current system demand
Auto
D.001 Pump overrun: Heating 1 to 60 min 5 min
D.002 Max. anti-cycl. time: Heating 2 to 60 min 20 min
D.003 Outlet temperature actual value In °C Not ad- justable
D.004 Cylinder temperature actual value In °C Not ad- justable
D.005 Heating target flow temperature 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 Not ad- justable
D.006 Outlet temperature target value 35 to 65 °C Not ad- justable
D.007 Comfort mode target value
APC target value
Cylinder temperature target value
Product with integrated domestic hot water generation, and product with integrated domestic hot water genera- tion and shift-load cylinder
35 to 65 °C
Product with heating mode only
Frost protection is at 15 °C, then 40 to 70 °C (max. temperature can be adjusted under D.020)
Not ad- justable
D.008 Controller 3-4 Room thermostat open (no heat requirement) Room thermostat closed (heat requirement) Not ad- justable
D.009 eBUS controller target value n °C Not ad- justable
D.010 Internal pump On, Off Not ad- justable
D.011 External pump On, Off Not ad- justable
D.012 Cyl. charging pump On, Off Not ad- justable
D.013 Circulation pump On, Off Not ad- justable
D.014 Pump speed target value Target value of internal high-efficiency pump in %. Pos- sible settings:
0 = Auto 1 = 53
2 = 60
3 = 70
4 = 85 5 = 100
0 = Auto
D.015 Pump speed actual value Actual value for internal high-efficiency pump in % Not ad- justable
D.016 Controller 24 V DC: Heating mode Heating mode off/on Not ad- justable
D.017 Control type Control type:
0 = Flow, 1 = Return
Return: Automatic detection function for heat output inactive. Max. possible partial heat load when D.000 is on Auto.
D.018 Pump operating mode 1 = Comfort (continuously operating pump)
Internal pump is switched on when the heating flow tem- perature is not at Heating off and the heat requirement is enabled via an external control
3 = Eco (intermittently operating pump)
Internal pump is switched on every 25 minutes for 5 minutes once the overrun time has elapsed
3 = Eco
D.019 Pump operating mode: 2-stage pump Setting for two-stage pump operating mode
0: Burner mode stage 2, pump prerun/overrun stage 1
1: Heating mode and pump prerun/overrun stage 1, domestic hot water mode stage 2
2: Automatic heating mode, pump prerun/overrun stage 1, domestic hot water mode stage 2
3: Always stage 2
4: Automatic heating mode, pump prerun/overrun stage 1, domestic hot water mode stage 1
2
D.020 Max. DHW temperature target value Adjustment range: 50–70 °C (actoSTOR 65 °C) 65 °C
D.022 DHW demand On, Off Not ad- justable
D.023 Heating mode status Heating on, heating off (summer mode) Not ad- justable
D.025 Ext. eBUS signal: Cylinder char- ging On, Off Not ad- justable
D.026 Auxiliary relay 1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extraction hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active) 9 = Anti-legionella pump (not active) 10 = Solar valve (not active)
2 = External pump
D.027 Accessory relay 1 Switching of relay 1 on the VR 40 "2 in 7" multi-func- tional module
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extraction hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active) 9 = Anti-legionella pump (not active) 10 = Solar valve (not active)
2 = External pump
D.028 Accessory relay 2 Switching of relay 2 on the VR 40 "2 in 7" multi-func- tional module
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extraction hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active) 9 = Anti-legionella pump (not active) 10 = Solar valve (not active)
2 = External pump
D.029 Water circulation vol. actual value Actual value in m3/h Not ad- justable
D.033 Fan speed target value In rpm Not ad- justable
D.034 Fan speed actual value In rpm Not ad- justable
D.035 3-way valve position Heating mode
Parallel operation (mid-position) DHW mode
Not ad- justable
D.036 DHW flow rate In l/min Not ad- justable
D.039 Solar inlet temp. actual value Actual value in °C Not ad- justable
D.040 Flow temperature actual value Actual value in °C Not ad- justable
D.041 Return temperature actual value Actual value in °C Not ad- justable
D.044 Ionisation value actual value Display field 0 to 1020
> 800 no flame
< 400 good flame
Not ad- justable
D.046 Pump mode 0 = Relay with disable facility 1 = PWM with disable facility 0 = Relay with disable facility
D.047 Current outside temperature (with Vaillant weather-compensated control) Actual value in °C Not ad- justable
D.050 Offset min. speed In rpm, adjustment range: 0 to 3000 Nominal value set in factory
D.051 Offset max. speed In rpm, adjustment range: -990 to 0 Nominal value set in factory
D.058 Solar post-heating 0 = Solar post-heating deactivated
3 = DHW activation target value minimum 60 °C, thermo- static mixing valve required between product and draw- off point
0 = Solar post-heating deactivated
D.060 Number of safety therm. shut- downs Number of shutdowns Not ad- justable
D.061 No. of shut-downs in ign. flame controller Number of unsuccessful ignitions in the last attempt Not ad- justable
D.064 Avg. ignition time In seconds Not ad- justable
D.065 Max. ignition time In seconds Not ad- justable
D.067 Remaining anti-cycl. time for heat- ing In minutes Not ad- justable
D.068 Number of first start attempts Number of unsuccessful ignitions Not ad- justable
D.069 Number of second start attempts Number of unsuccessful ignitions Not ad- justable
D.070 3-way valve operation 0 = Normal operating mode
1 = Parallel operation (mid-position)
2 = Permanent heating position
0 = Normal operating mode
D.071 Max. heating target flow temp. 40 to 80 °C 75 °C
D.072 Pump overrun after cylinder char- ging Adjustable from 0–10 minutes in increments of 1 minute 2 mins
D.073 Offset setting for comfort mode Adjustable from-15Kto5K 0
D.074 Anti-legionella funct. with integ- rated cyl. 0 = Off
1 = On
1 = On
D.075 Max. cylinder charging time 20–90 min 45 mins
D.076 Device Specific Number Device specific number = DSN
1 = VU 126/5-5 (H-GB) ecoTEC plus 612
3 = VU 156/5-5 (H-GB) ecoTEC plus 615
4 = VU 186/5-5 (H-GB) ecoTEC plus 618, VU 186/5-5 (P-GB) ecoTEC plus 618
9 = VU 246/5-5 (H-GB) ecoTEC plus 624
14 = VU 306/5-5 (H-GB) ecoTEC plus 630, VU 306/5-5 (P-GB) ecoTEC plus 630
20 = VU 386/5-5 (H-GB) ecoTEC plus 637 6 = VUW 196/5-5 (H-GB) ecoTEC plus 825
10 = VUW 246/5-5 (H-GB) ecoTEC plus 832, VUW 246/5-5 (P-GB) ecoTEC plus 832
62 = VUW 306/5-5 (H-GB) ecoTEC plus 835
17 = VUW 286/5-5 (H-GB) ecoTEC plus 838, VUI 286/5- 5 (H-GB) ecoTEC plus 938
Not ad- justable
D.077 DHW partial load Adjustable cylinder charging output in kW
D.078 DHW max. flow temperature Limit on cylinder charging temperature in °C 50 °C – 80 °C
Note
The chosen value must be at least 15 K or 15 °C above the target cylinder value.
75 °C
D.080 Heating operating hours In hours (h) Not ad- justable
D.081 DHW operating hours In hours (h) Not ad- justable
D.082 Heating burner starts Number of burner start-ups Not ad- justable
D.083 DHW burner starts Number of burner start-ups Not ad- justable
D.084 Maintenance in Adjustment range: 0 to 3000 hrs and "—" for deactivated „—”
D.088 Min. DHW flow rate Switch-on delay for domestic hot water draw-off detec- tion via impeller (only products with integrated domestic hot water generation)
0 = 1.5 l/min and no delay,
1 = 3.7 l/min and 2 sec. delay
1.5 l/min and no delay
D.090 eBUS controller Status of digital control Recognised, not recognised Not ad- justable
D.091 DCF77 Status with connected external proble with DCF77 receiver 0 = no reception
1 = reception
2 = synchronised
3 = valid
Not ad- justable
D.092 actoSTOR communication status actoSTOR module detection
0 = Not connected
1 = Connection fault: No communication via PeBus, actoSTOR module was previously detected
2 = Connection active
Not ad- justable
D.093 Adjust Device Specific Number Device Specific Number (DSN) Adjustment range: 0 to 99
D.094 Clear fault history Delete fault list
0 = No
1 = Yes
D.095 Software version: PeBUS parti- cipant PCB (BMU) Display (AI) actoSTOR (APC) HBI/VR34 Not ad- justable
D.096 Reset to factory settings? Reset all adjustable parameters to factory setting 0 = No
1 = Yes
D.097 Activation of the second diagnostic level Password:17 Password:17
D.098 Coding resistor Display xx.yy
xx = Coding resistor 1 in cable harness for output range:
8 = VU 126/5-5 (H-GB) ecoTEC plus 612; VU 156/5-5 (H-GB) ecoTEC plus 615; VU 186/5-5 (H-GB) ecoTEC plus 618, VU 186/5-5 (P-GB) ecoTEC plus 618; VUW 196/5-5 (H-GB) ecoTEC plus 825
9 = VU 246/5-5 (H-GB) ecoTEC plus 624; VUW 246/5-5 (H-GB) ecoTEC plus 832; VUW 246/5-5 (P-GB) ecoTEC plus 832
10 = VU 306/5-5 (H-GB) ecoTEC plus 630; VU 306/5-5 (P-GB) ecoTEC plus 630; VUW 306/5-5 (H-GB) ecoTEC plus 835
11 = VU 386/5-5 (H-GB) ecoTEC plus 637; VUW 286/5- 5 (H-GB) ecoTEC plus 838; VUI 286/5-5 (H-GB) ecoTEC plus 938
yy = Coding resistor 2 on PCB for gas group: 02 = P gas
03 = H gas
07 = L gas
Not ad- justable