Commissioning; Shutting Down; Troubleshooting - AEG EWH 30 Trend Operation And Installation

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 flush 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 filled
up and the pipework is free of air.
» Adjust the flow rate. For this, observe the maximum
permissible flow rate with a fully opened tap (see
chapter "Specification / Data table").
» If necessary reduce the flow rate at the butterfly
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".
18

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
The water does not The high limit safety
heat up and the ON/ cut-out has responded
OFF indicator does because the controller
not illuminate. is faulty.
The high limit safety
cut-out has responded
because the temper-
ature has fallen below
-15 °C.
The water does not The heating element
heat up and the ON/ is faulty.
OFF indicator illumi-
nates.
The water does not The temperature con-
heat up sufficiently troller is faulty.
and the ON/OFF indi-
cator illuminates.
The heat-up time is The heating element
very long and the ON/ is scaled up.
OFF indicator illumi-
nates.
The safety valve The valve seat is con-
drips when heating is taminated.
switched off.
Water pressure is too
high.
Reset key, high limit safety cut-out
Remedy
Remedy the cause of
the fault. Replace the
controller.
Press the reset button
(see diagram).
Replace the heating
element.
Replace the tempera-
ture controller.
Descale the heating
element.
Clean the valve seat.
Install a pressure re-
ducing valve.