Symptom: The Water At The Tap Is Too Cold; Symptom: Heat Pump Failure - Daikin Intergas Altherma Hybrid User Reference Manual

9.5 Symptom: The water at the tap is too cold

9.6 Symptom: Heat pump failure

EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma Hybrid hydrosplit heat pump
4P556862-1A – 2020.10
Possible cause
Your tank ran out of domestic hot water
because of unusual high consumption.
The desired DHW tank temperature is
too low.
The instant DHW temperature is too
low. (Only applicable when no tank is
installed).
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.
9 Troubleshooting
|
Corrective action
If you immediately need domestic hot
water, activate the DHW tank booster
mode. However, this consumes extra
energy. See "Using the DHW tank
4
booster mode" [ 29].
If you can wait, overrule (increase) the
active or next scheduled desired
temperature so that more hot water
will be produced exceptionally. See
read out and overrule the active or next
scheduled desired temperature (in
scheduled mode or scheduled + reheat
4
mode)" [ 28].
If the problems recurs daily, do one of
the following:
▪ Increase the DHW tank temperature
preset value. See
4
values" [ 37].
▪ Adjust the DHW tank temperature
schedule. Example:
additionally heat up the DHW tank to
a preset value (Storage
lower tank temperature) during the
day. See "Using and programming
4
schedules" [ 38] and
4
Example" [ 39].
Increase the instant DHW set point
temperature. See "To adjust the instant
4
DHW temperature" [ 25].
"To
"Using preset
Program to
eco =
"Schedules:
User reference guide
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