Zehnder Rittling ComfoBox Q User Manual page 7

In addition to the symbols that define the corresponding operating modes, the following symbols can be
displayed in this field:
Operation
This shows the transfer of heat between the circuits.
When the symbol is displayed continuously, the heat pump is operating normally.
When the symbol flashes, the protection function of the heat pump is activated.
Power source
Withdrawal of energy from the energy source or injection of energy into the energy source.
Circuit inversion
HEATING/COOLING CIRCUIT is equipped with an inverter. Only for heat pumps with
inverter.
Maintenance
The compressor start is deactivated when there is a gap (15 minutes) between starts.
The number of minutes remaining until the compressor start is displayed next to the symbol.
STANDBY This is not applicable. The heat pump will remain in standby mode as there is currently no
demand for it.
Zehnder ComfoBox Q / ComfoHeat User Manual, BA-CBQ_DE-CH V1.0
7