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KOMFORT EC SKE270-1.5
Remove the four screws and take off the protecting cover.
Pull the band to remove the heat exchanger from the unit.
Support the control unit swivel panel with hand while removing the
screws that fix the swivel panel of the control unit.
After that release the service panel to enable access to the control unit.
After maintenance perform all the operations reverse.
TROUBLESHOOTING AND FAULT HANDLING
In case of alarm the unit is turned off and the wall-mounted display shows the alarm indicators, fig. 11. The possible alarms are listed in the table 5. The alarms
must be removed ONLY in a service centre or by a service expert, duly authorized for unassisted operations at the units up to 1000 V after careful reading of the
operation manual.
Freeze protection sensor
drop-off indicator
Duct temperature sensor
drop-off indicator
Temperature sensor failure
Overheating of
heating elements
ALARM
INDICATION
REMEDY
Overheating of the heating elements
Overheating of the heating elements. Reset the alarm overheat thermostat manually.
Temperature sensors failure
Short circuit of one or two temperature sensors. Remove the short circuit.
Duct temperature sensor dropping off
Remove the duct temperature sensor drop-off.
Freeze protection sensor dropping off
Remove the freeze protection sensor drop-off.
Fig. 11. Alarm indication on the wall-mounted control panel
Table 5. Unit alarm list
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