Daikin EHBH04CB Operation Manual page 10

7 Glossary
6.3 Symptom: Heat pump failure
When the heat pump fails to operate the backup heater can serve as
an emergency heater and either automatically or non­automatically
take over the heat load. When auto emergency is activated and a
heat pump failure occurs, the backup heater will automatically take
over the heat load. When a heat pump failure occurs and auto
emergency is not activated, the domestic hot water and space
heating operations will stop and need to be recovered manually. The
user interface will then ask you to confirm whether the backup heater
can take over the heat load or not. When the heat pump fails, will
appear on the user interface.
Possible cause
Heat pump is damaged.
INFORMATION
When the backup heater takes over the heat load,
electricity consumption will be considerably higher.
7 Glossary
DHW = Domestic hot water
Hot water used, in any type of building, for domestic
purposes.
LWT = Leaving water temperature
Water temperature at the water outlet of the heat pump.
Operation manual
10
Corrective action
▪ Press to view a description
of the problem.
▪ Press again.
▪ Select to allow the backup
heater to take over the heat
load.
▪ Call your local dealer to get
the heat pump fixed.
EHBH/X04~16CB + EHVH/X04~16CB
Daikin Altherma – Low temperature split
4P383117­1C – 2015.01