125
Checking the solar control module fuse
A
1.
Switch OFF the power.
2.
Check fuse
A
in the solar control
module (see connection and wiring
diagram).
Extension kit for heating circuit with mixer
Checking the setting of rotary selec-
tor S1
The rotary selector on the PCB of the
extension kit defines the assignment to
the relevant heating circuit.
Heating circuit
Rotary
selector S1
setting
Heating circuit with
mixer M2 (heating cir-
cuit 2)
2
2 3
4
5
6
10
9
8
7
Heating circuit with
mixer M3 (heating cir-
cuit 3)
4
4
2 3
5
6
10
9
8
7
Checking the rotational direction of
the mixer motor
After being switched ON, the boiler
implements a self-test. During this, the
mixer is opened and closed again.
Troubleshooting
Repairs
(cont.)
5412 755 GB
Service
