Daikin EHYHBH08AFV32 [12/16] Glossary
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Daikin EHYHBH08AFV32 [12/16] Glossary

Daikin EHYHBH05AFV32 [12/16] Glossary
9 Disposal
Operation manual
12
EHYHBH05AFV3* + EHYHBH/X08AFV3*
Daikin Altherma hybrid heat pump
4P349588-1F – 2020.10
8.1 Symptom: You are feeling too cold
(hot) in your living room
Possible cause Corrective action
The desired room temperature is
too low (high).
Increase (decrease) the desired
room temperature. See
"3.3.2Room thermostat control -
Using the room temperature
home pages"[44].
If the problem recurs daily, do
one of the following:
▪ Increase (decrease) the room
temperature preset value. See
the user reference guide.
▪ Adjust the room temperature
schedule. See "3.5Schedules:
Example"[46].
The desired room temperature
cannot be reached.
Increase the desired leaving
water temperature in accordance
with the heat emitter type. See
"3.3.3Room thermostat control -
Using the leaving water
temperature home pages"[45].
The weather-dependent curve is
set incorrectly.
Adjust the weather-dependent
curve. See the user reference
guide.
8.2 Symptom: The water at the tap is
too cold
Possible cause Corrective action
Your tank ran out of domestic hot
water because of unusual high
consumption.
If you immediately need domestic
hot water, activate the DHWtank
booster mode. However, this
consumes extra energy. See
"Using the DHWtank booster
mode"[46].
If you can wait, overrule
(increase) the active or next
scheduled desired temperature
so that more hot water will be
produced exceptionally. See "To
read out and overrule the active
or next scheduled desired
temperature (in scheduled mode
or scheduled + reheat
mode)"[46].
If the problems recurs daily, do
one of the following:
▪ Increase the DHW tank
temperature preset value. See
the user reference guide.
▪ Adjust the DHW tank
temperature schedule.
Example: Program to
additionally heat up the
DHW tank to a preset value
(Storage eco = lower tank
temperature) during the day.
See "3.5 Schedules:
Example"[46].
The desired DHWtank
temperature is too low.
The instant DHW temperature is
too low. (Only applicable when
no tank is installed).
Increase the instant DHW set
point temperature. See "To
adjust the instant DHW
temperature"[45].
8.3 Symptom: Heat pump failure
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 activated and a heat pump failure
occurs, the boiler will automatically take over the heat load.
▪ When auto emergency is not activated 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 you to confirm whether the boiler can take over the entire
heat load or not.
When the heat pump fails, will appear on the user interface.
Possible cause Corrective action
Heat pump is damaged. ▪ Press to view a description
of the problem.
▪ Press again.
▪ Select to allow the gas
boiler to take over the entire
heat load.
▪ Call your local dealer to get
the heat pump fixed.
INFORMATION
When the gas boiler takes over the entire heat load, gas
consumption will be considerably higher.
9 Disposal
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.
10 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 unit.

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