77
Venkon EC 115 V
77
Maintenance
Fault table
9.1 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
and 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 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
Position control unit with integrated
sensor and/or external sensor in a
suitable location
Water escaping
from unit
Condensate drain not properly
installed
Check correct operation of
condensate pump, check and
clean condensate drain (if fitted)
Qualified personnel
Chilled water line incorrectly
insulated
Check insulation
Condensate drain outlets blocked
Clean condensate drains and check
for adequate gradient
Hydraulic connection not properly
done
Check flow and return and tighten,
if necessary
Condensate pump
is not running
properly
See separate instructions for the condensate pump
Qualified personnel
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