DORA TECH
90 LT - 120 LT
cod. 3540000800 - Rev. 02 - 09/2023
86
EN
2.12 TROUBLESHOOTING
If the equipment is not working properly, without any alarm sig-
naling, before contacting the manufacturer’s technical assis-
tance service, it is advisable to carry out the following.
Malfunction
Recommended action
The equipment does not switch on.
USER
• Check that the plug is properly inserted in the socket.
• Check that the ignition procedure has been carried out from the control
panel (ref. par. 2.5 on page 69).
• Disconnect the plug from the socket (
without pulling the power cord
)
and wait a few minutes; insert the plug back into the socket.
If the problem persists
: contact a qualified technician or the technical assis-
tance service.
EXPERT TECHNICIAN
/ MANUFACTURER'S
TECHNICAL
ASSISTANCE
• Check the status of the power cable inside the product.
• Check that the
fuse
on the power board is intact. Otherwise, replace it
with a new delayed
5 A 250V
, IEC 60127-2/II (
T5AL250V
) certified (refer
to par. 7.1 on page 104).
Water cannot be heated via the heat pump
in ECO or AUTOMATIC mode
USER
• Turn off the device (ref. par. 2.5 on page 69) and turn it back on after
a few hours.
If the problem persists
: contact a qualified technician or the technical assis-
tance service.
EXPERT TECHNICIAN
/ MANUFACTURER'S
TECHNICAL
ASSISTANCE
• Disconnect the device from the power grid.
• Drain part of the water contained in the tank (about 50%) and refill it.
• Turn the appliance on again in ECO mode.
The heat pump stays on continuously and
never turns off
USER
• Check that, by not opening any valve for a few hours, the equipment
reaches the set point temperature.
If the problem persists
: contact a qualified technician or the technical assis-
tance service.
Water cannot be heated via the integrated
heating element in AUTOMATIC mode
EXPERT TECHNICIAN
/ MANUFACTURER'S
TECHNICAL
ASSISTANCE
• Switch off the device and check the safety thermostat of the heating
element inside the device and reset it if necessary. Then turn on the
equipment in AUTOMATIC mode.
• Disconnect the device from the power supply then drain part of the
water contained in the tank (about 50%) then recharge it and turn the
device back on in
ELECTRIC
mode.
• Check that the electrical heater
safety thermostat
has not intervened
(ref. par. 7.2 on page 104).
The product cannot be controlled via APP
USER
• Check that there is Wi-Fi network coverage, e.g. via smartphone
where the product is installed, then carry out the configuration proce-
dure again with the router.
• Then ensure that the Wi-Fi symbol on the display is steady on.
