Troubleshooting; Specification - AEG DDLE ÖKO TD 18 Operation And Installation

12. Troubleshooting

Fault Cause
Flow rate too low. Sieve, perlator
contaminated.
Motorised valve
faulty.
Continuous fault Sensor / PCB
display on the user faulty.
interface.
Faulty
communication
between the user
interface and the
control unit.
Backlighting in No power supply.
the user interface
completely OFF.
Loose connecting
cable to the
user interface.
Safety pressure
limiter has
responded.
Faulty PCB.
Heater does not Heating system
switch ON / no hot faulty.
water.
Flow detector faulty
or not plugged in.
The high limit
safety cut-out has
responded or its
cable is broken.
Fault message is One phase has
only shown when dropped out.
hot water is drawn.
Supply temperature
> 45 °C.
Cold water flows Wellness function
briefly. enabled.
Brief flow rate
collapse.
Air recognition
responds (cold
water for approx.
1 min).
» Remedy
Clean the sieve, perlator.
Check the motorised valve.
Replace it, if required.
Investigate the fault further
in the customer service
mode.
See chapter "Appliance
description / Customer
service mode".
Check the user interface
and its connecting cable.
Check the fuse / MCB in
your fuse box/distribution
panel.
Reconnect the cable.
Remove the cause.
Flush the heating
system to prevent it from
overheating.
Activate the safety
pressure switch at flow
pressure by pressing the
reset button.
Check the PCB and
replace it, if required.
Check the heater and
replace it, if required.
Check the connection.
Check the flow meter in the
customer service mode.
Remove the cause.
Activate the high limit
safety cut-out; replace it, if
required.
Check the fuse / MCB in
your fuse box/distribution
panel.
See chapter "Water
installation"; limit supply
temperature if necessary.
Disable the Wellness
function.
The appliance restarts
automatically when an
adequate flow rate has
been detected.
The appliance restarts
automatically after a delay.
Installation – for qualified contractors

13. Specification

13.1 Wiring diagram
3/PE ~ 380 - 415 V
1 Heaters
2 High limit safety cut-out
3 Safety pressure limiter
13.2 Dimensions
226
190
35
100
c06
c01
190
b02 Entry electrical cables 1
c01 Cold water inlet
c06 DHW outlet
93
b02
50
112
Male thread G 1/2 A
Male thread G 1/2 A
37