Vaillant ecoVIT exclusiv VKK 226/4-H Operating Instructions Manual - page 14
Appendix
14
Operating instructions ecoVIT exclusiv 0020258609_00
Appendix
A
Status codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Statuscode
Meaning
S.00 Heating: No heat de-
mand
Heating has no heat demand. The burner is off.
S.01 Heating mode: Fan start-
up
The fan start-up for heating mode is activated.
S.02 Heating mode: Pump
pre-run
The pump prerun for heating mode is activated.
S.03 Heating mode: Ignition
The ignition for heating mode is activated.
S.04 Heating mode: Burner
on
The burner for heating mode is activated.
S.06 Heating mode: Fan over-
run
The fan overrun for heating mode is activated.
S.07 Heating mode: Pump
overrun
The pump overrun for heating mode is activated.
S.08 Heating mode: Anti-cyc-
ling time
The anti-cycling time for heating mode is activated.
S.20 DHW demand
The domestic hot water demand is activated.
S.22 DHW mode: Pump pre-
run
The pump prerun for domestic hot water mode is activated.
S.24 DHW mode: Burner on
The burner for domestic hot water mode is activated.
S.27 DHW mode: Pump over-
run
The pump overrun for domestic hot water mode is activated.
S.31 No heat demand: Sum-
mer mode
Summer mode is activated; there is no heat demand. The external control blocks heating mode.
S.34 Heating mode: Frost pro-
tection
The frost protection function for heating mode is activated.
B
Troubleshooting
Symptom
Possible cause
Measure
No hot water, heating stays cold
No gas
1.
Check whether the gas stopcock in the building and the gas
stopcock on the product are open.
2.
Open one or both of the gas stopcocks.
Installation isolator is closed
1.
Check whether one of the isolators is closed.
2.
Ask a competent person whether closed isolators can be
opened again.
No power supply
1.
Check whether the power supply to the building and the main
switch on the product are switched on.
2.
Switch on the power supply to the building and the main
switch on the product.
The display shows
S.39
"Con-
tact thermostat activated" (e.g.
by the condensate pump or the
surface-mounted thermostat in
the underfloor circuit)
1.
Clean the condensate pump with clean water in accordance
with the operating instructions for the condensate pump or
contact your approved heating specialist company.
2.
Contact an approved heating specialist company.
Filling pressure in the heating
installation too low.
F.22
"Water
pressure too low" appears in
the display
1.
Fill the heating installation. (
→
Page 11)
2.
If the pressure drops too frequently, contact an approved
heating specialist company. The cause of the loss in heating
water must be established and eliminated.