Inspection and maintenance 9
0020233500_01 auroCOMPACT Installation and maintenance instructions
33
1
2
3
4
5
6
8
7
8.
Remove the ignition cable plug
(3)
and the earth cable
(4)
from the ignition electrode.
9.
Remove the plug
(8)
from the fan motor by pressing on
the locking lug.
10. Remove the plug
(7)
from the gas valve.
11. Remove the plug
(6)
from the Venturi jet by pressing on
the locking lug.
12. Undo the four nuts
(1)
.
13. Pull the compact thermal module's assembly group
(2)
out of the heat exchanger.
14. Check the burner and the heat exchanger for damage
and dirt.
15. If necessary, clean or replace the components accord-
ing to the following sections.
16. Fit a new burner door seal.
17. Check the heat insulation on the burner door. If you
notice any signs of damage, replace the heat insulation.
9.7
Cleaning the heat exchanger
1.
Protect the folded-down electronics box against
sprayed water.
1
2
3
4
2.
The four nuts on the threaded pins
(4)
must never be
loosened or tightened.
3.
Clean the heating coil
(2)
on the heat exchanger
(3)
using water or, if required, vinegar (maximum 5% acid).
Allow the vinegar to act on the heat exchanger for
20 minutes.
4.
Rinse away any loose dirt with a sharp jet of water or
use a plastic brush. Do not point the water jet directly
at the heat insulation
(1)
on the back of the heat ex-
changer.
◁
The water flows via the condensate siphon and out
of the heat exchanger.
9.8
Checking the burner
1
▶
Check the surface of the burner
(1)
for damage. If you
see any damage, replace the burner.
9.9
Cleaning the condensate siphon
1
2
1.
Remove the lower section of the siphon
(1)
by turning
the bayonet fitting anti-clockwise.
2.
Flush the lower section of the condensate siphon with
water.
3.
Fill the lower section with water up to about 10 mm be-
low the upper edge.
4.
Screw the lower section back onto the condensate si-
phon.
