8 Troubleshooting
Operation manual
14
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680075-1B – 2022.02
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.
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.
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.
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 To
change the desired room
temperature.
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
To change the desired leaving
water temperature.
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 unusually high
consumption.
If you immediately need domestic
hot water, activate the DHW tank
Powerful operation
. However,
this consumes extra energy. See
"5.6.4 Using DHW powerful
operation"
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
(
Eco setpoint
= lower tank
temperature) during the day.
See
The desired DHW tank
temperature is too low.
The thermal cut-out has tripped.
Contact your installer.
8.5
Symptom: Heat pump failure
When the heat pump fails to operate, the booster heater 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 booster heater in the tank automatically takes over the
domestic hot water production.
