7 Maintenance and service
Operation manual
18
ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH
₂
O
4P663481-1 – 2021.07
▪ Program to turn ON the domestic hot water pump ONLY during
periods of the day when instant hot water is necessary.
Example:
In the morning and evening.
7
Maintenance and service
7.1
Overview: Maintenance and
service
The installer has to perform a yearly maintenance. You can find the
contact/helpdesk number via the user interface.
1
Go to [8.3]:
Information
>
Dealer information
.
As end user, you have to:
▪ Keep the area around the unit clean.
▪ Keep the user interface clean with a soft damp cloth. Do NOT use
any detergents.
▪ Regularly check if the water pressure is above 1 bar.
▪ Carry out a visual check of the water level inside the storage tank:
Check if the red level indicator is visible. If NOT, add water to the
storage tank (for details see Installer reference guide).
8
Troubleshooting
Contact
For the symptoms listed below, you can try to solve the problem
yourself. For any other problem, contact your installer. You can find
the contact/helpdesk number via the user interface.
1
Go to [8.3]:
Information
>
Dealer information
.
8.1
To display the help text in case of a
malfunction
In case of a malfunction, the following will appear on the home
screen depending on the severity:
▪
: Error
▪
: Malfunction
You can get a short and a long description of the malfunction as
follows:
1
Press the left dial to open the main menu and go to
Malfunctioning
.
Result:
A short description of the error and the error
code is displayed on the screen.
2
Press in the error screen.
Result:
A long description of the error is displayed
on the screen.
8.2
To check the malfunction history
Conditions:
The user permission level is set to advanced end user.
1
Go to [8.2]:
Information
>
Malfunction history
.
You see a list of the most recent malfunctions.
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
change the desired room
temperature"
12].
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
The desired room temperature
cannot be reached.
Increase the desired leaving
water temperature in accordance
with the heat emitter type. See
"5.6.3 To change the desired
leaving water temperature"
12].
The weather-dependent curve is
set incorrectly.
Adjust the weather-dependent
curve. See
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
"5.7.3 Using DHW powerful
operation"
13].
If the problems recurs daily, do
one of the following:
▪ Adjust
the
storage
tank
temperature schedule. See
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.
▪ When
Emergency
is set to
Automatic
and a heat pump failure
occurs, the backup heater or boiler automatically takes over the
domestic hot water production and space heating.
▪ 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 can take over the heat load or not.
