Troubleshooting 10
0020233500_01 auroCOMPACT Installation and maintenance instructions
37
10.7
Using check programmes
You can also use check programmes (
→
Page 23) for
troubleshooting.
10.8
Resetting parameters to factory settings
▶
To reset all parameters simultaneously to the default
settings, set
D.096
to
1
.
10.9
Preparing the repair work
1.
Decommission the product.
2.
Disconnect the product from the power mains.
3.
Remove the front casing.
4.
Close the gas isolator cock.
5.
Close the service valves in the heating flow and in the
heating return.
6.
Close the service valve in the cold water pipe.
7.
Drain the product if you want to replace water-bearing
components of the product.
8.
Make sure that water does not drip on live components
(e.g. the electronics box).
9.
Use only new seals.
10.10 Replacing defective components
10.10.1 Replacing the burner
1.
Remove the compact thermal module. (
→
Page 32)
1
2.
Undo the four screws on the burner
(1)
.
3.
Remove the burner.
4.
Fit the new burner with a new seal.
5.
Ensure that the recesses on the seal and burner are
aligned with the sight glass on the burner door.
6.
Install the compact thermal module. (
→
Page 34)
10.10.2 Replacing the fan
1
3
2
8
4
7
5
6
1.
Remove the air intake pipe.
2.
Remove the three plugs
(1)
and
(6)
from the gas valve.
3.
Remove the plug from the sensor on the Venturi jet
(4)
by pressing on the locking lug.
4.
Remove the plug(s) (depending on the unit version)
(8)
from the fan motor by pressing on the locking lug.
5.
Undo the two cap nuts
(5)
and
(7)
on the gas valve.
Hold on to the gas valve when loosening the cap nuts.
6.
Undo the three screws
(3)
between the mixer tube
(2)
and the fan flange.
1
2
3
7.
Remove the assembly (which is made up of the fan,
Venturi jet and gas valve) from the unit.
8.
Loosen the gas valve's fixing screw
(3)
from the
bracket.
9.
Remove the gas valve from the retainer.
10. Remove the Venturi jet
(2)
and the gas connection pipe
(1)
from the fan by turning the bayonet fitting on the
Venturi jet as far as it will go anti-clockwise and then
pulling the Venturi jet out of the fan.
