D Status Codes - Overview - Vaillant ecoTEC exclusive 835 Installation And Maintenance Instructions Manual

Status codes – Overview
D
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Status code Parameter
Heating mode
S.00 Heating: No heat demand
S.01 Heating mode: Fan start-up
S.02 Heating mode: Pump pre-run
S.03 Heating mode: Ignition
S.04 Heating mode: Burner on
S.05 Heating mode: Pump/fan overrun
S.06 Heating mode: Fan overrun
S.07 Heating mode: Pump overrun
S.08 Heating mode: Anti-cycling time
S.09 Heating mode: Measuring program
DHW mode
S.10 DHW demand
S.11 DHW mode: Fan start-up
S.13 DHW mode: Ignition
S.14 DHW mode: Burner on
S.15 DHW mode: Pump/fan overrun
S.16 DHW mode: Fan overrun
S.17 DHW mode: Pump overrun
S.19 DHW mode: Measuring program
Comfort mode, warm start or domestic hot water mode with actoSTOR
S.20 DHW demand
S.21 DHW mode: Fan start-up
S.22 DHW mode: Pump pre-run
S.23 DHW mode: Ignition
S.24 DHW mode: Burner on
S.25 DHW mode: Pump/fan overrun
S.26 DHW mode: Fan overrun
S.27 DHW mode: Pump overrun
S.28 DHW anti-cycling time
S.29 DHW mode: Measuring program
Others
S.30 No heat demand: Controller
S.31 No heat demand: Summer mode
S.32 Waiting time deviation: Fan speed
S.33 Waiting time: Air monitor
S.34 Heating mode: Frost protection
S.36 Target value for ext. controller lower than 20 °C
S.37 Waiting time: Deviation in fan speed
S.39 Contact thermostat triggered
S.40 Comfort protection active
S.41 Water pressure too high
0020193968_05 ecoTEC exclusive Installation and maintenance instructions
Meaning
Heating: No heat demand
Heating mode: Fan start-up
Heating mode: Pump prerun
Heating mode: Ignition
Heating mode: Burner on
Heating mode: Pump/fan overrun
Heating mode: Fan overrun
Heating mode: Pump overrun
Heating mode: Remaining anti-cycling time
Heating mode: Measuring programme
Domestic hot water requirement via impeller sensor
DHW mode: Fan start-up
DHW mode: Ignition
DHW mode: Burner on
DHW mode: Pump/fan overrun
DHW mode: Fan overrun
DHW mode: Pump overrun
DHW mode: Measuring programme
Domestic hot water requirement
DHW mode: Fan start-up
DHW mode: Pump prerun
DHW mode: Ignition
DHW mode: Burner on
DHW mode: Pump/fan overrun
DHW mode: Fan overrun
DHW mode: Pump overrun
Domestic hot water burner anti-cycling time
DHW mode: Measuring programme
Room thermostat (RT) is blocking heating mode
Summer mode active or no heat requirement from eBUS
control
Waiting period because of fan speed deviation
Waiting period: Air pressure sensor/switch reports that
the pressure signal is too low
Frost protection mode active
Reference setting for continuous controller 7-8-9 or
eBUS controller is < 20°C and blocks the heating mode
Waiting period: Fan failure in operation
"Burner off contact" has responded (e.g. surface-moun-
ted thermostat or condensate pump)
Comfort protection mode is active: Product running with
limited heating comfort
Water pressure > 2.8 bar
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