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