513064298_201507
Display shows Meaning
Fault There is a fault in the heat pump
Disabled Heat pump has been disabled via parameters
Standby No demand
Pre-ush Sensors are brought to the same temperature level without heat source.
Flowsensorisexposedtoow.
ON Heat pump in control mode
Defrost mode Heat pump in defrost mode
Post-ush ZHPrunsonwithoutaheatsource
Blocking time A blocking time is present for the heat pump
Power-OFF The heat pump is blocked by the power supply utility / via PSU contact
OT shutdown Operation of heat pump no longer appropriate, outside temperature shutdown
FL/RT > max. Heat pump can no longer meet the heat demand, application limit reached
Active cooling Heat pump in cooling mode
Spply air<min Supply air temperature is below the minimum level
TPW / Max. Th Dew point monitor or maximum thermostat has responded
Display shows Meaning
ODU test Outdoor unit test
Test Relay test active (IDU)
Antifreeze HC Heat pump frost protection function, heating circuit temperature below
frost protection limit (T_boiler, T_return, T_header)
Antifreeze DHW Heat pump frost protection function, DHW cylinder temperature below
frost protection limit
DFL low Blockingofheatpump/electricheatinguntiltheowrateisbackwithin
valid limits
Defrost mode Defrost function of ODU
Antilegion. Heating of DHW cylinder to 65 °C
DHW mode DHW heating with cylinder, cylinder sensor temperature is below the
set value
DHW run-on Heatsourceswitchedoff,ZHPrunson
Heating mode At least one heating circuit is demanding heat
Heating run-on Heatsourceswitchedoff,ZHPrunson
Active cooling Cooling mode active
Cascade Cascade module in system active
BMS Heat pump is controlled by the building management system
Standby No heating or DHW demand
Pump down Refrigerant circuit drain function
29.2.2 Heat pump status
29.2.1 Heat pump operating mode
29. Operating the AM display module