1.5 Statuses
The status indicates the availability of the heat pump to perform various functions.
Status ON
The heat pump is switched on and all its functions can be activated.
Status ON + EVU
The heat pump is on, but compressor start is deactivated by the EVU signal.
Secondary functions can be activated, such as starting the pumping equipment,
hot water circulation, etc.
Status ON + NIGHT TIME
The heat pump is switched on and all its functions can be activated. However,
there is a functional limitation due to night-time programming.
Status OFF via the control panel
The heat pump was manually switched off on the front panel of the control unit.
Activation of these functions is therefore not possible.
Status OFF in case of time or calendar programming
The heat pump switches off according to the programmed active time or calendar.
Activation of these functions is therefore not possible.
Status OFF by signal from data bus
The heat pump was switched off via an external signal via the data bus.
Activation of these functions is therefore not possible.
Status OFF by supervisor
In installations where several units are operating in parallel, the supervisor switched
off the heat pump. Activation of these functions is therefore not possible.
Status EMERGENCY STOP via control panel
The heat pump is in EMERGENCY STOP condition, which was activated manually
on the front panel of the control unit. The compressor cannot be started. However,
services may be provided if additional equipment is available for emergency use.
Status EMERGENCY STOP due to an active alarm
The heat pump is in status EMERGENCY STOP because there is an active alarm.
The compressor cannot be started. However, services may be provided if additional
equipment is available for emergency use.
Status EMERGENCY STOP due to repeated alarms
The heat pump is in the status EMERGENCY STOP, because it is a constantly
recurring alarm. The compressor cannot be started. However, services may be
provided if additional equipment is available for emergency use.
Zehnder ComfoBox Q / ComfoHeat User Manual, BA-CBQ_DE-CH V1.0
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