B Overview Of Diagnostics Codes - Vaillant ecoFIT sustain Series Installation And Maintenance Instructions Manual

# Maintenance work
28 Checking the pre-charge pressure of the expansion vessel
29 Check the water flow rate (domestic hot water). Insufficient water flow
rate → Check the incoming water supply. Incoming water supply sufficient,
water flow rate too low → Clean or replace the strainer in the cold water
inlet
30 Check the impeller sensor for dirt/damage and, if required, replace it
31 Reassemble the product
32 Open the service valves, carry out the required leak-tightness test
33 Fill the product/heating installation to the filling pressure specified for the
system
34 Connect the product to the electrical installation
35 Run the test operation on the product/heating installation including hot
water generation (if available) and, if required, purge the product/heating
installation
36 Measure the CO content, CO₂ content and the CO/CO₂ ratio again
B 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 time in
heating mode
d.02 Maximum burner anti-
cycling time in heating
mode
d.04 Water temperature in
the cylinder
d.05 Determined target
heating flow temper-
ature
d.06 Target domestic hot
water temperature
d.07 Target temperature for
the domestic hot water
cylinder
d.08 Status of the 230 V
thermostat
d.09 Target heating flow
temperature that is
set on the eBUS room
thermostat
d.10 Status of the internal
pump in the heating
circuit
d.11 Status of the heating
circuit's shunt pump
d.13 Status of the domestic
hot water circuit's cir-
culation pump
38
Values
Unit
Min. Max.
– –
kW
1 60 min
2 60 min
℃
Current value
℃
Current value
℃
Current value
℃
Current value
–
Current value
℃
Current value
–
Current value
–
Current value
–
Current value
Installation and maintenance instructions ecoFIT sustain 0020230529_06
Interval
at regular intervals
Annually
Annually
After each time maintenance
work is carried out
Annually
Annually
Annually
Annually
Annually
Increment, select, explanation
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
1
–
–
(Combi boiler only)
–
0 = Room thermostat open (no
heat requirement)
1 = Room thermostat closed
(heat requirement)
–
off / on
off / on
off / on
33
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