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Status codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Code
S.34 Heating mode: Frost pro-
tection
S.91 Service message: Demo
mode
S.100 Unit in standby
S.101 Heating mode: Com-
pressor switched off
S.102 Heating mode: Com-
pressor blocked
S.103 Heating mode: Pump
prerun
S.104 Heating mode: Com-
pressor active
S.107 Heating mode: Pump
overrun
S.111 Cooling mode: Com-
pressor switched off
S.112 Cooling mode: Com-
pressor blocked
S.113 Cooling mode: Pump
prerun
S.114 Cooling mode: Com-
pressor active
S.117 Cooling mode: Pump
overrun
S.125 Heating mode: Electric
back-up heater active
S.132 DHW generation: Com-
pressor blocked
S.133 DHW generation: Pump
prerun
S.134 Domestic hot water
mode: Compressor active
S.135 Domestic hot water
mode: Electr. back-up heater
active
S.137 DHW generation: Pump
overrun
S.141 Heating mode: Electr.
back-up heater off
S.142 Heating mode: Electric
back-up heater blocked
S.151 DHW mode: Electr.
back-up heater switched off
S.152 DHW mode: Electr.
back-up heater blocked
S.173 Waiting period: No op-
eration approval from ESCO
S.176 External electrical out-
put limit active
S.202 Purge programme for
building circuit active
S.203 Actuator test
programme active
8000017440_FT Installation and maintenance instructions
Meaning
If the measured outdoor temperature falls below XX °C, the temperature of the heating circuit's flow
and return is monitored. If the temperature difference exceeds the set value, the pump and com-
pressor are started without a heat demand.
There is no heat demand or cooling demand. Standby 0: Outdoor unit. Standby 1: Indoor unit
The heat demand is met, the demand is ended by the system control and the heat deficit is offset.
The compressor is switched off.
The compressor is blocked for heating mode because the heat pump is outside of its application lim-
its.
The start conditions for the compressor in heating mode are checked. Start the other actuators for
heating mode.
The compressor works in order to meet the heat demand.
The heat demand is met, the compressor is switched off. The pump and fan overrun.
The cooling demand is met, the demand is ended by the system control. The compressor is switched
off.
The compressor is blocked for cooling mode because the heat pump is outside of its application lim-
its.
The start conditions for the compressor in cooling mode are checked. Start the other actuators for
cooling mode.
The compressor works in order to meet the cooling demand.
The cooling demand is met, the compressor is switched off. The pump and fan overrun.
The immersion heater is used in heating mode.
The compressor is blocked for domestic hot water mode because the heat pump is outside of the
application limits.
The start conditions for the compressor in domestic hot water mode are checked. Start the other actu-
ators for domestic hot water mode.
The compressor works in order to meet the domestic hot water demand.
The immersion heater is used in domestic hot water mode.
The domestic hot water demand is met, the compressor is switched off. The pump and fan overrun.
The heat demand is met, the immersion heater is switched off.
The immersion heater is blocked for heating mode.
The domestic hot water demand is met, the immersion heater is switched off.
The immersion heater is blocked for domestic hot water mode.
The mains voltage supply is interrupted by the energy supply company. The maximum anti-cycling
time is set in the configuration.
The external electrical output limit is active.
The purge programme for the building circuit is active.
The test programme for actuating the actuators is active.
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