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Application guidelines
Installer reference guide
58
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
NOTICE
Before disconnecting.
If you want to remove or disconnect the brine low pressure
switch, first set [C‑0B]=0 (brine low pressure switch not installed). If not, this causes
an error.
If [C-0B]=1 (brine low pressure switch installed), and the brine low pressure switch
is triggered, then:
Heat pump operation
Stops with error.
When the pressure in the circuit is
restored, a power restart of the system
is required.
Emergency mode
Activates
Passive cooling
Central water loop valve test run
Interrupts
If [C-0B]=1 (brine low pressure switch installed), and the connection to the ACS
digital I/O PCB is malfunctioning, then:
Heat pump operation
Stops with error.
When the malfunction is over, the unit
resumes operation.
Emergency mode
Activates but no heating is possible
because the backup heater is
disconnected from the ACS digital I/O
PCB.
Passive cooling
Central water loop pump actuator test
run
Interrupts
Setup
"9.2.11 To connect the brine low pressure switch"
102].
Configuration
199].