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KaCool D
02.02.2017
Faults
Fault table
9.2 Fault Table
Operating disruptions must only be recti
fi
ed by authorised
specialist personnel! The table below shows some possible
faults as well as measures to rectify them:
Fault
Possible cause
Measures
Personnel
Fan is not
running
Unit switched off
Switch on the unit via the controller
Specialist
personnel
No mains power supply
Check the mains power supply and restore if
necessary
Electrical cable not connected or
incorrectly connected
Check the wiring and correct
if necessary
No request from the controller,
therefore the fans switch off
Change the controller setting as required
Unit too loud
Speed too high
Set a lower speed level
User/
caretaker
Air intake or air outlet openings
blocked
Clear air intake and discharge grilles
Filter dirty
Replace the
fi
lter
Unit is not heating
or cooling
suf
fi
ciently
(LPHW/CHW)
Fan not switched on
Switch on the fan via the controller
User/
caretaker
Air
fl
ow rate too low
Set a higher speed level
Filter dirty
Replace the
fi
lter
No heating or cooling medium
Switch on the heating or cooling system,
switch on the circulation pump, vent the
unit(s)/system
Specialist
personnel
Valves do not work
Replace faulty valves
Water
fl
ow rate too low
Check the pump capacity, check the
hydraulics
Setpoint temperature on the controller
set too low or too high
Adjust the temperature setting on the
controller
Operating unit with integrated sensor
or external sensor is exposed to direct
sunlight or positioned above a heat
source
Position the operating unit with integrated
sensor or external sensor in a suitable
location
Water outlet on the
unit
Condensation drain is not
installed properly
Check the function of the condensation
pump, if used (specialist personnel); check
the condensation drain, clean if necessary
Specialist
personnel
Cold water pipe is not properly
insulated
Check the insulation
Drains on the condensation trays
blocked
Clean the condensation drains and check
there is an adequate gradient
Hydraulic connection is not correct
Check the
fl
ow and return pipes, tighten if
necessary
