Appendix; A Overview Of Diagnostics Codes - Vaillant ecoFIT pure 825 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.
Dia-
gnostics Parameter
code
d.00 Heating maximum output
d.01 Pump overrun in heating
mode
d.02 Maximum burner anti-
cycling time in heating
mode
d.04 Water temperature in the
cylinder
d.05 Determined heating flow
set target temperature
d.06 Hot water set target tem-
perature
d.07 Set target temperature
for the domestic hot wa-
ter cylinder
d.08 Status of the 230 V ther-
mostat
d.09 Heating flow set target
temperature that is set
on the eBUS room ther-
mostat
d.10 Status of the internal
pump in the heating cir-
cuit
d.11 Status of the heating
circuit's shunt pump
d.13 Status of the hot water
circuit's circulation pump
d.14 Operating mode of the
modulating pump
d.15 Pump speed
d.16 Status of the 24 V room
thermostat
d.17 Heating control
0020230531_01 ecoFIT pure Installation and maintenance instructions
Values
Unit Increment, select, explanation
Min. Max.
– –
kW The maximum heating output
varies depending on the product.
→ Section "Technical data"
Automatic: Unit automatically
adjusts the maximum output to
the current system demand
1 60 min 1
2 60 min 1
℃ –
Current value
℃ –
Current value
℃
Current value (Combination unit only)
℃ –
Current value
–
Current value 0 = Room thermostat open (no
heat requirement)
1 = Room thermostat closed
(heat requirement)
℃ –
Current value
–
Current value off / on
–
Current value off / on
–
Current value off / on
–
0 5 0 = variable rotational speed
(auto)
1; 2; 3; 4; 5 = Fixed rotational
speeds → Section "Setting the
pump output"
–
Current value %
–
Current value off = Heating off
on = Heating on
– – –
off = Flow temperature
on = Return temperature (ad-
justment for underfloor heating.
If you have activated the return
temperature control, the auto-
matic heating output determina-
tion function is not active.)
Appendix
Default set-
Own setting
ting
→ Section
Adjustable
"Technical
data"
5 Adjustable
20 Adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
0 Adjustable
–
Not
adjustable
–
Not
adjustable
0 Adjustable
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