Daikin ERLA03DAV3 Installer's Reference Manual page 127

ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1A – 2020.05
# Code
[A.5.1.1] [4‑00]
N/A [5-00]
[A.5.1.4] [5‑01]
INFORMATION
Only for systems with integrated domestic hot water tank: If backup heater
operation during space heating needs to be limited but can be allowed for domestic
hot water operation, then set [4‑00] to 2.
Auto emergency
When the heat pump fails to operate, the gas boiler can serve as an emergency
back-up heater and either automatically or non-automatically take over the entire
heat load.
▪ When auto emergency is set to Automatic and a heat pump failure occurs, the
boiler will automatically take over the heat load.
▪ When auto emergency is set to Manual and a heat pump failure occurs, the
domestic hot water and space heating operations will stop and need to be
recovered manually. The user interface will then ask the user to confirm whether
the boiler can take over the entire heat load or not.
When the heat pump fails,
unattended for longer periods, we recommend to set [A.6.C] Emergency to
Automatic.
# Code
[A.6.C] N/A
INFORMATION
The auto emergency setting can be set in the menu structure of the user interface
only.
INFORMATION
If a heat pump failure occurs and [A.6.C] is set to Manual, the room frost protection
function, the underfloor heating screed dryout function, and the water pipe
antifreeze function will remain active even if the user does NOT confirm emergency
operation.
Description
Backup heater operation:
▪ 0: Disabled
▪ 1: Enabled
▪ 2: Only DHW
Is backup heater operation allowed above
equilibrium temperature during space heating
operation?
▪ 1: NOT allowed
▪ 0: Allowed
Equilibrium temp.
Outdoor temperature below which operation of
the backup heater is allowed.
Range: –15°C~35°C
will appear on the user interface. If the house is
Description
Emergency:
▪ 0: Manual
▪ 1: Automatic
9 Configuration
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Installer reference guide
127