Service/maintenance
Chapter 7 OPERATION MANUAL
V1.3.0en/06.07.15//14.06 Liability for errors and misprints excluded. CC®
7 Service/maintenance
7.1 Messages from the temperature control unit
Messages output by the temperature control unit can be divided into various classes.
Follow the instructions displayed on the >Touchscreen< [88]. Once a message has been acknowl-
edged, a symbol is output on the >Touchscreen< [88]. Tapping the symbol takes you to an overview
of all messages in chronological order.
Displayed symbol:
7.2 Electrical fuse
The thermal overcurrent circuit breakers for all pole breaking (L and N) are located at the back of the
hanger thermostat. In case of a fault (no function and no display on the hanger thermostat) please
first check if the overcurrent circuit breaker has tripped. If the overcurrent circuit breaker triggers
again immediately after reversing, please unplug the power cord and contact Customer Support
immediately (see phone number can be found on page 82 in section »Phone number and company
address«).
7.3 Replacing the “Pilot ONE®”
Replacing the electronics while the temperature control unit is operating
MORTAL DANGER FROM FIRE
Stop an ongoing temperature control process.
Disconnect the temperature control unit from the power supply by turning the >mains switch<
[37] on the temperature control unit to “0”.
Also disconnect the temperature control unit from the current supply.
In case of fault, you can replace the “Pilot ONE” yourself. If you have questions or difficulties, please
contact your dealer, your local office or our Customer Support.
Position of
fuses
Replacing the
“Pilot ONE”
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