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9 - MAINTENANCE
9.17 MALFUNCTIONINGS
NUL AIR FLOW
No power supply
unit in alarm
Check the alarm code
Contact the authorized service centre
HP alarm (in summer)
Dirty exchanger
Water temperature out of operating limits
INSUFFICIENT AIR FLOW Dirty filters Clean the filters
WATER DRAGGING
siphon or clogged tray discharge Clean the siphon / tray
No siphon / not well produced See WATER CONNECTIONS section
Ducting or loosened panels Check closings
Fan bearings Replace fans
Wrong compressor phase sequence See START-UP section
To much flow Calibrate the flow
THE AMBIENT DOESN’T REACH THE
DESIRED TEMPERATURE
Dirty exchanger
Clean the exchanger
see previous pages
NOISINESS
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