AEG EWH 150 Trend [18/72] Shutting down
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AEG EWH 150 Trend [18/72] Shutting down

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AEG EWH 150 Trend [18/72] Shutting down
18
Installation - for contractors
11. Commissioning
11.1 Commissioning
Note
Fill the appliance with water prior to electrical con-
nection. If you switch on the appliance while empty,
the high limit safety cut-out will switch it off.
» Thoroughly ush out the cold water line before con-
necting the appliance, so that no foreign matter gets
into the water heater or safety valve.
» Open the shut-off valve in the cold water feed line.
» Open a draw-off point until the appliance has lled
up and the pipework is free of air.
» Adjust the ow rate. For this, observe the maximum
permissible ow rate with a fully opened tap (see
chapter "Specication / Data table").
» If necessary reduce the ow rate at the buttery
valve of the safety valve.
» Turn the temperature selector to maximum.
» Switch the mains power ON.
» Check the function of the appliance. Ensure that the
thermostat switches off.
» Check that the safety valve is working correctly.
11.1.1 Appliance handover
» Explain the function of the appliance and safe-
ty valve to users and familiarise them with their
operation.
» Make users aware of potential dangers, especially
the risk of scalding.
» Hand over these instructions.
11.2 Recommissioning
See chapter "Commissioning".
12. Shutting down
» Disconnect the appliance from the mains at the
MCB/fuse in the fuse box.
» Drain the appliance. See chapter "Maintenance /
Draining the appliance".
13. Troubleshooting
Note
The high limit safety cut-out can respond at temper-
atures below –15 °C. The appliance may be subjected
to these temperatures during storage or transport.
Fault Cause Remedy
The water does not
heat up and the ON/
OFF indicator does
not illuminate.
The high limit safety
cut-out has responded
because the controller
is faulty.
Remedy the cause of
the fault. Replace the
controller.
The high limit safety
cut-out has responded
because the temper-
ature has fallen below
-15 °C.
Press the reset button
(see diagram).
The water does not
heat up and the ON/
OFF indicator illumi-
nates.
The heating element
is faulty.
Replace the heating
element.
The water does not
heat up sufficiently
and the ON/OFF indi-
cator illuminates.
The temperature con-
troller is faulty.
Replace the tempera-
ture controller.
The heat-up time is
very long and the ON/
OFF indicator illumi-
nates.
The heating element
is scaled up.
Descale the heating
element.
The safety valve
drips when heating is
switched off.
The valve seat is con-
taminated.
Clean the valve seat.
Water pressure is too
high.
Install a pressure re-
ducing valve.
Reset key, high limit safety cut-out
D0000037143

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