Daikin Altherma 3 H MT ECH2O - Resolving Common System Symptoms

8 | Troubleshooting
User reference guide
57
ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663480-1 – 2021.07
8.3 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 "5.6.4To change the
desired room temperature"[429].
If the problem recurs daily, do one of
the following:
▪ Increase (decrease) the room
temperature preset value. See
"5.8.1Using preset values"[434].
▪ Adjust the room temperature
schedule. See "5.8.2 Using and
programming schedules" [4 34] and
"5.8.3 Schedule screen:
Example"[437].
The desired room temperature cannot
be reached.
Increase the desired leaving water
temperature in accordance with the
heat emitter type. See "5.6.5To change
the desired leaving water
temperature"[429].
The weather-dependent curve is set
incorrectly.
Adjust the weather-dependent curve.
See "5.9Weather-dependent
curve"[443].
8.4 Symptom: The water at the tap is too cold
Possible cause Corrective action
You ran out of domestic hot water
because of unusual high consumption.
If you immediately need domestic hot
water, activate the tank Powerful
operation. However, this consumes
extra energy. See "5.7.5Using DHW
powerful operation"[433].
If the problems recurs daily, do one of
the following:
▪ Adjust the storage tank temperature
schedule. See "5.8.2 Using and
programming schedules" [4 34] and
"5.8.3 Schedule screen:
Example"[437].
The desired storage tank temperature is
too low.
8.5 Symptom: Heat pump failure
When the heat pump fails to operate, the backup heater or boiler can serve as an
emergency heater. It then takes over the heat load either automatically or by
manual interaction.