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Troubleshooting
FAULT
FANS DO NOT
WORK
FANS RETURN
TO REVERSE
DIRECTION
LOW AIR FLOW
HIGH AIR FLOW
DRAINAGE
WATER
CAN NOT BE
DISCHARGED
8
REASON
a. Power supply off
b. No signal from the
control panel
c. Incorrect or loose
electrical connection
d. Motors in thermal
protection mode
a. Phase connection is
not correct
a. Filters clogged or
dirty.
b. Air duct is clogged
c. Channel connections
are incomplete.
a. Channel connections
are incomplete.
b. Supply voltage is low
c. Grilles are not
mounted
d. Filters are not
mounted
a. Drainage plugged
b. Incorrect installation
of drainage pipe.
SOLUTION
a. Turn on the power supply
b. Press the correct buttons of the
control panel
c. Connect connections correctly
d. Check motor current
a. Make the correct phase connection
a. Change or clean filters
b. Check the air ducts
c. Check the duct system for leaks and
complete the connections
a. Check the duct system for leaks and
complete the connections
b. Measure the current drawn by the
motor against overloading
c. Mount the grilles
d. Mount the filters
a. Clean drain pipe
b. Mount the drain pipe correctly
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