Western Aertesi Brezza Series, Installation, Operation And Maintenance Manual

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13-TROUBLESHOOTING
Fault Possible fault Remedy
The fan does not
turn
There is no current Check the circuit breaker / fuse
The thermostat is damaged
Check if there is power to the terminals of the fan (and/
or 0-10V signal for EC)
The cables are not
connected Monitor the implementation of all electrical connections with
in the scheme
Capacitor broken Replace the capacitor (AC motor)
Insufficient air flow
Dirty filter Clean or replace the filter
Selected speed low Select a higher speed (max or med)
Noisy fan
Damaged fan Visually check that the fan is intact
Fan loose Check that the fan is fixed firmly to the bottom of the box
Selected speed high Select a lower speed (min or med)
In summer comes
out hot air or cold
air out in the winter
Water too hot
Check that the incoming water is less than 10 ° C
in summer or above 40 ° C in winter
Water flow low
Check that the dT between water input and
output is at most 7K
Valve closed Check that all manual valves are open to interception
Pump route The float has closed the valve for pump alarm
Valve Actuator broken Check that the actuator has opened the valve
Air in the coil Vent drums and pipes
Condensation on
the panel
Water too cold Raise the water inlet temperature
Speed too low Increase the speed of the fan (med or max)
Dripping from the
pan
Condensate drain clogged Control the outflow of the exhaust pipe
Pan counter slope Check that the tray is level or tilted slightly towards the drain
Float broken The float switches the pump
Pump route The pump does not work or is dirty (clogged)
Check v
alve stuck The check valve prevents the passage of water
Water pipes are not
insulated
Insulate all chilled water pipes
Defective seals Check seals of hole connection
Dirty pan Clean the pan to allow the normal flow of condensate