Installation and maintenance instructions ecoTEC 0020029172_0344
Display Meaning Display value/adjustable value
d.0 Heating part load Adjustable heating part load in kW (factory setting: approx. 70%
of maximum output)
d.1 Pump overrun for heating mode 2 - 60 minutes (factory setting: 5)
d.2 Maximum burner anti-cycling time heating at 20°C flow
temperature
2 - 60 minutes (factory setting: 20)
d.4 Measured value of cylinder sensor in °C
d.5 Set value of flow temperature (or target value of return) in °C, maximum of the value set in d.71, limited by an eBUS controller
if connected)
d.7 Set value cylinder temperature 40 to 65 °C (maximum temperature can be adjusted at d.20)
d.8 Room thermostat at terminals 3-4 0 = Room thermostat open (no heat request)
1 = Room thermostat closed (heat request)
d.9 Set value flow temperature at terminal 7-8-9 in °C, minimum off, target value of ext. eBus and target value of
terminal 7
d.10 Status internal pump 1 = on, 0 = off
d.11 Status external heating pump 1 to 100 = on, 0 = off
d.12 Status cylinder charge pump 1 to 100 = on, 0 = off
d.13 Status circulation pump 1 to 100 = on, 0 = off
d.15 Pump speed actual value Actual value internal pump in %
d.22 Hot water demand via C1/C2, internal hot water control
system
1 = on, 0 = off
d.23 Summer/winter operating mode (heating on/off) 1 = heating on, 0 = heating off (summer mode)
d.24 not relevant not relevant
d.25 Hot water generation enabled by eBUS controller 1 = yes, 0 = no
d.29 Actual value circulation water quantity of flow rate
sensor
Actual value in m
3
/h
d.30 Control signal for the gas valve 1 = on, 0 = off
d.33 Fan speed target value in rpm/10
d.34 Fan speed actual value in rpm/10
d.35 not relevant Not relevant
d.40 Flow temperature actual value in °C
d.41 Return temperature actual value in °C
d.44 Digitalised ionisation voltage Display range 0 to 102, >80 no flame, <40 good flame display
d.47 Outside temperature (with weather-controlled Vaillant
controller)
Actual value in °C
d.76 Boiler variant (display): Device specific number (DSN) 46
d.90 Status digital regulator 1 = detected, 0 = not detected (eBUS Address <=10)
d.91 Status DCF with external sensor connected 0 = no reception, 1 = reception, 2 = synchronised, 3 = valid
d.97 Activation of the 2
nd
diagnosis level Code: 17 for level 2
d.98 Telephone number of heating engineer Programmable telephone number
Table 9.2 Diagnosis codes in the 1
st
diagnosis level
2
nd
diagnosis level
• Scroll as described above in the 1
st
diagnosis level to
diagnosis code d.97
• Change the displayed value to 17 (password) and save
this value.
You are now in the 2
nd
diagnosis level in which all
information from the 1
st
(see Table 9.2) and the 2
nd
(see Table 9.3) is displayed.
Scroll and change values and exit diagnosis mode as
described in the 1
st
diagnosis level.
h
Note!
If you push the buttons "i" and "+" within
4 minutes of leaving the 2
nd
diagnosis level,
you can directly access the 2
nd
diagnosis level
without re-entering the password.
9 Troubleshooting
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