Vaillant ecoFIT sustain Series Installation And Maintenance Instructions Manual page 39

Dia-
gnostics Parameter
code
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
d.18 Pump overrun operat-
ing mode
d.19 Pump mode, 2-stage
pump
d.20 Maximum target do-
mestic hot water tem-
perature
d.21 Status of the warm
start for domestic hot
water
d.22 Status of the DHW
demand
d.23 Status of the heat de-
mand
d.24 Status of the pressure
monitor
d.25 Status of the require-
ment to reheat the cyl-
inder or for the do-
mestic hot water warm
start from the eBUS
thermostat
d.27 Function of relay
1 (multi-functional
module)
0020230529_06 ecoFIT sustain Installation and maintenance instructions
Values
Unit
Min. Max.
–
0 5
Current value %
–
Current value
– – –
–
1 3
–
0 3
℃
50 60
–
Current value
–
Current value
–
Current value
–
0 1
–
Current value
–
1 10
Increment, select, explanation
0 = variable rotational speed
(auto)
1; 2; 3; 4; 5 = Fixed rotational
speeds → Section "Setting the
pump output"
–
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.)
1 = Continuous (pump runs per-
manently)
3 = Eco (intermittent pump oper-
ation – for the dissipation of the
residual heat after domestic hot
water generation at an extremely
low heat demand)
0 = Burner mode stage 2, pump
flow/overrun stage 1
1 = Heating mode and pump
run/overrun stage 1, domestic
hot water mode stage 2
2 = Automatic heating mode,
pump rin/overrun stage 1, do-
mestic hot water mode stage 2
3 = Stage 2
1
off = Function deactivated
on = Function activated and
available
off = No current requirement
on = Current requirement
off = Heating off (Summer mode)
on = Heating on
off = Not switched
on = Switched
off = Function deactivated
on = Function activated
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extraction hood
5 = External solenoid valve
6 = Fault display
7 = Solar pump (omitted)
8 = eBUS remote control
9 = Anti-legionella pump
10 = Solar valve
Default set-
Own setting
ting
0 Adjustable
–
Not
adjustable
–
Not
adjustable
0 Adjustable
1 Adjustable
3 Adjustable
60 Adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
–
Not
adjustable
1 Adjustable
39