40 | LWZ304-404 SOL www.stiebel-eltron.com
INSTALLATION
Shutdown
8. Shutdown
!
WARNING Injury
There will be no ventilation if the appliance is taken out
of use. This may result to the development of mould fun-
gus and damage to the building.
Prevent the appliance being out of use for pro-
longed periods.
Note
Prevent the appliance being shut down if it is to be re-
started later. Use the standby mode.
When shutting down, always carry out the following steps:
Isolate the appliance fully from the power supply.
WARNING Burns
Hot water may escape when draining the DHW cylinder.
Close the shut-off valve in the cold water supply line.
Open the hot water taps on all draw-off points.
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26_04_01_0570
1 Drain connection of the DHW cylinder
Fully drain the DHW cylinder.
Drain the heating circuit.
In the case where the appliance is to be returned into use again
later, first carry out the following:
Remove the air filters.
Carry out all service-related cleaning tasks, such as clean-
ing the condensate pan and the cross-countercurrent heat
exchanger.
!
Material losses
Mark the appliance to enable the recognition that
the appliance has been fully shut down and that it
must be refilled, checked and commissioned before
restarting.
Mark the appliance with the date when it was shut
down.
9. Troubleshooting
9.1 Exhaust air fan is catching
If the exhaust air fan drags, return it into its correct position.
D0000038984
1
2
1 Fixing screw on the r.h. side panel
2 Fan strut fixing screws
Open the function module door.
You will locate the fixing screw for the r.h. side panel in the gap
between door and appliance.
Undo the fixing screw from the r.h. side panel.
Remove the r.h. side panel of the function module.
Undo the fixing screws from the fan strut and push the strut
so the exhaust air fan no longer drags. If necessary, increase
the clearance between the fan nozzle and the fan using
spacers.
Refit the fixing screws to the fan strut.
Insert the fixing screw into the r.h. side panel.
9.2 Cleaning defrost pan
!
Material losses
Do not use any cleaning agents, just water.
Clean the defrost tray if it is dirty. It may be contaminated with
leaves, mineral wool residues (from insulation) or polystyrene
balls (from drainage tiles).
Remove the central front panel as described in chapter
"Cleaning the evaporator fins".
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