Daikin Altherma 3 R W Installer's Reference Manual page 210

10 | Configuration
Emergency
Installer reference guide
210
Equilibrium
# Code
[9.3.6] [5-00]
[9.3.7] [5-01]
Operation
# Code
[9.3.8] [4‑00]
INFORMATION
When heating of the DHW by the heat pump is too slow, it may affect a comfortable
operation of the space heating/cooling circuit. If so, allow the backup heater to assist
during DHW operation by setting [4-00]=1 or 2.
Emergency
When the heat pump fails to operate, the backup heater and/or booster heater
can serve as an emergency heater. It then takes over the heat load either
automatically or by manual interaction.
▪ When Emergency is set to Automatic and a heat pump failure occurs, the
backup heater automatically takes over the heat load, and the booster heater in
the optional tank takes over the domestic hot water production.
▪ When Emergency is set to Manual and a heat pump failure occurs, the
domestic hot water heating and space heating stops.
To manually recover it via the user interface, go to the Malfunctioning main
menu screen and confirm whether the backup heater and/or booster heater can
take over the heat load or not.
Description
Equilibrium: Deactivate backup heater (or
external backup heat source in case of a bivalent
system) above the equilibrium temperature for
space heating?
▪ 0: No
▪ 1: Yes
Equilibrium temperature: Outdoor
temperature below which operation of the
backup heater (or external backup heat source in
case of a bivalent system) is allowed.
Range: –15°C~35°C
Description
Backup heater operation:
▪ 0: Restricted
▪ 1: Allowed
▪ 2: Only DHW: Backup heater operation is
enabled for domestic hot water and disabled
for space heating.
ERGA04~08EA + EHBH/X04+08EF
Daikin Altherma 3 R W
4P629085-1B – 2021.11