Appliance Description; Cleaning, Care And Maintenance; Troubleshooting - AEG U5 Operation And Installation

Operation
Material losses
!
Connecting the appliance via a time switch will
cause an unintentional reset of the high limit safety
cut-out.
» Never connect the appliance to the power sup-
ply via a time switch.
Material losses
Failure to observe the installation instructions may
result in water damage and void the guarantee.
2.3 Test symbols
See type plate on the appliance.

3. Appliance description

This open vented (non-pressurised) appliance constantly
maintains the water content at the pre-selected temper-
ature. As water is drawn from the appliance, cold water
flows in at the same rate. The appliance is equipped with
a temperature controller which maintains the set water
temperature.
During heating, expansion water drips from the tap. This
natural process cannot be stopped by turning off the tap
excessively tightly.
The appliance is equipped with a high limit safety cut-
out which isolates it from the power supply if excessive
temperatures occur.
The appliance may only be installed with taps for open
vented (non-pressurised) water heaters (see chapter "In-
stallation / Appliance description / Accessories").
Subject to season, varying cold water temperatures can
result in different maximum amounts of mixed outlet water.
3.1 Operation
You can set any required DHW outlet temperature var-
iably at the temperature selector. The heat-up indicator
illuminates during the heat-up process.
1
1 Temperature selector
OFF / frost pro- The appliance is protected against frost. The
tection tap and water lines are not protected.
approx. 30 °C approx. 30 °C
e.g. for hand washbasins
approx. 55 °C approx. 55 °C
e.g. for regular DHW demand
approx. 85 °C approx. 85 °C
e.g. for occasional hot water demand
Material losses
!
High water temperatures can result in the appliance
scaling up more quickly and higher energy con-
sumption
» Only select the maximum temperature setting
for brief periods as required.
Material losses
!
To prevent the appliance running dry, especially
after prolonged periods out of use, replace the water
regularly by opening the tap to the "hot" position.
14
4. Cleaning, care and
maintenance
» Never use abrasive or corrosive cleaning agents. A
damp cloth is sufficient for cleaning the appliance.
» Check the tap regularly. You can remove limescale
deposits at the tap outlet using commercially availa-
ble descaling agents.
Almost every type of water will deposit limescale at high
temperatures. This settles inside the appliance and af-
fects both the performance and service life.

5. Troubleshooting

Problem Cause
The appliance does The temperature se-
not supply hot water. lector is set to "OFF /
frost protection".
No power at the ap-
pliance.
The flanged immer-
sion heater is faulty.
Water can only be The aerator in the tap
drawn at a reduced is scaled up.
rate.
Loud boiling noises in- The appliance is
side the appliance. scaled up.
If you cannot remedy the fault, notify your qualified con-
tractor. To facilitate and speed up your enquiry, please
provide the numbers from the type plate.
Remedy
Switch the appliance
ON by turning the
temperature selector.
Check the plug / fuses
in the distribution
board.
Call your qualified
contractor.
Descale / replace the
aerator.
Call your qualified
contractor.