7 Maintenance and service
Operation manual
14
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680075-1C – 2022.03
▪ Also, by setting the heat up action to only scheduled action,
interruption to A/C operation will be limited to the specific
moments where A/C heating/cooling demand is less important.
▪ Program to heat up the DHWtank to a preset value (Comfort =
higher DHW tank temperature) during the night, because then
A/C heating/cooling demand is lower (example: between 22:00
and 04:00).
▪ If heating up the DHW tank once at night is NOT sufficient,
program to additionally heat up the DHWtank to a preset value
(Eco = lower DHWtank temperature) during the day or the time
when occupants are not present (example: between 09:00 and
15:00).
▪ Make sure the desired DHW tank temperature is NOT too high.
Example: After installation, lower the DHWtank temperature daily
by 1°C and check if you still have enough hot water.
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 enduser, 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.
Refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Refrigerant type: R32
Global warming potential (GWP) value: 675
Periodical inspections for refrigerant leaks may be required
depending on the applicable legislation. Contact your installer for
more information.
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
WARNING
▪ The refrigerant inside the unit is mildly flammable, but
normally does NOT leak. If the refrigerant leaks in the
room and comes in contact with fire from a burner, a
heater, or a cooker, this may result in fire, or the
formation of a harmful gas.
▪ Turn OFF any combustible heating devices, ventilate
the room, and contact the dealer where you purchased
the unit.
▪ Do NOT use the unit until a service person confirms
that the part from which the refrigerant leaked has been
repaired.
WARNING
The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Contact your installer for more information.
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.
WARNING
In case F3-00, there is possible risk of refrigerant leak.
Contact your installer.
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.
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