What if...
59
Troubleshooting
• Check the supply lead for damage.
• Check the fuse in the electric
installation.
• Check the micro-fuse located on the
circuit board for heating control 1 or 2
and replace as necessary (see
chapter 9.2).
• Replace the thermal fuse of heating
element 1
• Replace the thermal fuse of heating
element 2
• Replace the thermal fuses of both
heating elements 1 and 2
Fault description
There is no mains voltage present at the circuit
board(s) for heating control (boards 1 or 2).
AC1
circuit board with address 1 assigned
(type AC230L31) is affected
AC2
circuit board with address 2 assigned
(type AC230L31) is affected
Thermal fuse of a heating element is defective.
TS
thermal fuse
AC1
thermal fuse of heating element 1
affected, controlled by heating control
with address 1 assigned (type
AC230L31)
AC2
thermal fuse of heating element 2 is
affected
AC4
thermal fuses of both heating elements
are defective
Display message
11 Fault
AC1 No mains voltage
12 Fault
AC2 No mains voltage
15 Fault
AC1 TF
16 Fault
AC2 TF
18 Fault
AC4 TF
No.
Type
11
1
12
1
15
1
16
1
18
1
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