Rohde ST411 - General Faults; Special Malfunction: Replacing the Control Unit Fuse

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NOTE
Do not open the device cover.
⇒ There are no user-serviceable parts inside.
9.2. General faults
Fault
Cause
Solution
The control unit cannot be
switched on.
The kiln is not supplied with electricity.
⇒ Check the supply line/mains
plug of the kiln.
⇒ Check the fuses of the
house connection of the
kiln.
⇒ Observe the operating
instructions for the kiln.
A safety device on the kiln has triggered and has
completely switched off the energy supply to the
furnace.
Observe the operating
instructions for the kiln.
The control unit cable is not connected to the kiln or
the connection is incomplete.
Check the connection cable.
The key switch for switching on the control system
on the kiln is switched off.
Observe the operating
instructions for the kiln.
The fuse in the control unit has tripped and must be
replaced.
Observe Section 9.3. in this
instruction manual.
The control unit is showing an
error message.
An error has occurred in the operation of the control
system.
Observe Section 7. in this
instruction manual.
9.3. Special malfunction: Replacing the control unit fuse
If the control unit cannot be switched on and other faults have been excluded, replace the fuse in the housing of the control
unit.
Required spare part: 3.15 A T micro-fuse
ROHDE item no.: 704851
Replacing the fuse:
Step
Activity
Remark
1
Switch the control unit off.
2
Switch off the kiln completely.
Set the main switch on the kiln to the “0/OFF” position
or pull the power plug.
3
Disconnect the control unit connection cable from
the kiln.
4
Remove the fuse carrier on the underside of the
housing.
Tool:
7 mm slotted screwdriver
Place the tool in the slot in the fuse holder.