0020244997_07 Installation and maintenance instructions 59
D Status codes – Overview
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Code 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.05 Heating mode: Pump/fan
overrun
The pump/fan overrun 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.10 DHW demand The domestic hot water demand is activated.
S.11 DHW mode: Fan start-up The fan start-up for domestic hot water mode is activated.
S.13 DHW mode: Ignition The ignition for domestic hot water mode is activated.
S.14 DHW mode: Burner on The burner for domestic hot water mode is activated.
S.15 DHW mode: Pump/fan
overrun
The pump/fan overrun for domestic hot water mode is activated.
S.16 DHW mode: Fan overrun The fan overrun for domestic hot water mode is activated.
S.17 DHW mode: Pump over-
run
The pump overrun for domestic hot water mode is activated.
S.20 DHW demand The domestic hot water demand is activated.
S.21 DHW mode: Fan start-up The fan start-up for domestic hot water mode is activated.
S.22 DHW mode: Pump pre-
run
The pump prerun for domestic hot water mode is activated.
S.23 DHW mode: Ignition The ignition for domestic hot water mode is activated.
S.24 DHW mode: Burner on The burner for domestic hot water mode is activated.
S.25 DHW mode: Pump/fan
overrun
The pump/fan overrun for domestic hot water mode is activated.
S.26 DHW mode: Fan overrun The fan overrun 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.28 DHW anti-cycling time The anti-cycling time for domestic hot water mode is activated.
S.30 No heat demand: Con-
troller
Room thermostat blocks heating mode.
S.31 No heat demand: Sum-
mer mode
Summer mode is activated; there is no heat demand.
S.32 Waiting time deviation:
Fan speed
The waiting period for the fan start-up is activated.
S.34 Heating mode: Frost pro-
tection
The frost protection function for heating mode is activated.
S.39 Contact thermostat
triggered
The surface-mounted thermostat or the condensate pump has triggered.
S.40 Comfort protection act-
ive
The comfort protection mode is activated.
S.41 Water pressure too high The system pressure is too high.
S.42 Flue non-return flap
closed
Flue non-return flap return signal blocks burner operation (only in conjunction with the multi-functional
module) or condensate pump defective, heat demand is blocked.
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