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3.26
KaDeck
Versatile air conditioning for offices and administration buildings
Installation and operating instructions
9.2 Fault table
Only permit authorised personnel to rectify operational faults!
The table below shows possible faults and the action needed to
rectify them:
Fault
Possible cause
Actions
Personnel
Fan is not running
Unit switched off
Switch on the unit by the control
Qualified
personnel
No power supply
Check power supply and connect
Electrical cable not connected or
incorrectly connected
Check electrical wiring and correct if
necessary
No demand by controller, therefore fans
switch off
Change controller settings, if required
Unit too loud
Speed too high
Set lower fan speed
User/
Caretaker
Air intake or air outlet openings
blocked
Free air intake and outlet grilles
Filter dirty
Replace filter
Unit not heating or
cooling sufficiently
(LPHW/CHW)
Fan not switched on
Switch on fan at controller
User/
Caretaker
Air volume too low
Set higher fan speed
Filter dirty
Replace filter
No heating or cooling medium
Switch on heating and/or cooling system,
switch on circulation pump, vent unit(s)/
system
Qualified
personnel
Valves do not work
Replace faulty valves
Water volume too low
Check pump output, check hydraulics
Setpoint temperature on the controller
set too low/high
Adjust temperature setting on controller
Control unit with integrated sensor
and/or external sensor is exposed to
direct sunlight or positioned over a heat
source
Control unit with integrated sensor or
external sensor at a suitable position
Water escaping
from unit
Condensation drain not properly
installed
Check correct operation of condensation
pump, check and clean condensation drain
(if fitted)
Qualified
personnel
Chilled water line incorrectly insulated
Check insulation
Condensation drain outlets blocked
Clean condensation drains and check for
adequate gradient
Hydraulic connection not properly done
Check flow and return and tighten, if
necessary
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