Operation Manual

Help with problems22
Changing the fuse
Only use ceramic fuses of the type
230VAC; 2.5A; fast; 5x20 mm.
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1
Deenergize the device.
2
Open the housing (see "Opening
the housing" on Page 10).
3
Remove the holder with the fuse (Steps 1 to 3).
14
Replace the old fuse by a new one.
5
Insert the fuse again.
6
Close the housing (see "Closing the
housing" on Page 13).
Restoring the factory settings at the
underfloor heating controller
When the underoor heating controller
is reset to the factory settings, the cur-
rent conguration (assignment) is deleted.
The underoor heating controller retains
its conguration after a power failure.
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1
Keep the Mode and buttons pressed
simultaneously for at least 10 seconds.
After 4seconds the controller changes over
to test mode. Continue to keep the buttons
pressed until the
LED flashes orange.
The factory settings have been reset at
the underfloor heating controller.
Fault displays
If the LED lights up, a fault is present
in at least one temperature zone.
The colours of the zone LEDs 1...8 provide information
on the type of fault in the respective temperature zone:
Status Meaning
Off No fault
Flashing red No connection to the room temperature
sensor/setpoint adjuster
Flashing
orange
No connection to the setpoint
adjuster and evohome controller
or CM927 operating device
Flashing green
No connection to the evohome controller
or the CM927 operating device
The fault display extinguishes as soon
as the fault has been eliminated.
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Help with problems
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