Operating conditions
6
Betriebsanleitung_commotherm_5_15_SW_WW_Touch_Englisch_V1.2
17
6
OPERATING
CONDITIONS
Ready
There are essentially two versions to be
differentiated here, for which the heat pump may
be in the operating condition "ready”:
In the “OFF” mode the heat pump does not
work and is ready to start.
If the heat pump is in “heating operation” or
“cooling operation” mode but there is no
request from the user, the operating condition
"ready" also appears
Wait
This condition serves as compression protection.
If the compressor is switched off and switched on
again straight afterwards, the compressor only
starts after minimal downtime, which may be, for
example, 10 minutes. The “wait” condition is then
displayed.
The compressor may also only be started 6 times
per hour. If the compressor is started more
frequently, it also remains in “wait” operating
condition.
Pump flow
In this condition, the source and condenser pump
start up and run for a pre-set time. This serves to
build up circulation in both circuits.
Compressor
In this condition, the heat pump run and heat or
cooling consumer sends a request to the heat
pump.
Stop
In this condition, the heat pump is switched off but
the source and condenser pump are still running
in so-called pump stoppage to transport any
residual heat / cold to the heat consumer. The
pump stoppage continues according to the fixed
set pump stopping time.
Error
A serious fault has occurred. The heat pump and
all outputs are switched off too.
Cooling mode
This condition indicates that the heat pump is
cooling, i.e. the process is reversed and the
system is taking in heat and diverts this to the
source, for example.
Min. temp.
The heat pump changes in this condition as soon
as the source has reached a minimum
temperature. The source pump is also switched
on which brings about circulation and a
regeneration of the equipment in the brine circuit.
Max. temp. Residual heat
This condition is achieved if the flow temperature
of the heat pump is greater than the set maximum
temperature (usually 58° C). To lower the flow
temperature the circulation pump is switched on.
This runs as long as the maximum temperature is
not reached.
Residual heat
The compressor is switched off here and residual
heat is supplied to heat consumers.
Ext. Stop
The input “external stop” has responded and the
heat pump is switched off. The heat pump only
starts up again if the input “external stop” is no
longer responding. This input can respond, for
example, through phase limit switching by the
energy supply company.