Removing Electrical Heating Elements - Webasto Dual Top Evo 6 Workshop Manual

Dual Top Evo 6 / 7 / 8
Backside boiler: Loosen 7 mm hex nut that attaches water
temperature switch and water temperature sensor of sensor
wiring harness to back of boiler.
Remove sensor wiring harness and pink-coloured silicone
guard.
Disconnect 8-pin plug of sensor wiring harness from internal
wiring harness.
Fig. 813 Remove water temperature switch and sensor.
Remove 4 springs from back of heat exchanger.
NOTE:
Older heaters (Ident. No. 9015314A, see type label
on heater) have guide pads (silicone) instead of
springs.
After the heat exchanger is removed, the guide
pads must be replaced with springs.
Due to a different heat conductivity, the control
unit must also be replaced.
Fig. 814 Remove 4 springs.
Loosen 2 T10 screws that hold overheat switch to backside
heat exchanger.
Remove wires and cable fasteners from the ribs on the heat
exchanger.
Disconnect plug 2-pin of wiring overheating protector from
internal wiring harness.
Fig. 815 Remove overheating protection.

8.2.6 Removing electrical heating elements

Only for Dual Top Evo 7/8:
Disconnect 2 X1 plugs (2-pin, 1x grey and black, 1x brown
and blue) of cable from relay box to electrical heating
elements.
Loosen T10 screw on back of heat exchanger to remove
holding plate of electrical heating elements.
Pull electrical heating element backwards to take them out of
heat exchanger.
Fig. 816 Remove electrical heating elements.
8 Repair
805