4. Troubleshooting Guide
MO-36E-18Y
No.
Problem
Possible Cause
Corrective Action
Remarks
1
The evaporative air
cooler is not
functioning and
does not respond
when buttons are
pressed.
Blackout or faulty power
connection
Measure the input voltage
and connect to a
designated power supply.
We recommend
that a voltmeter is
used because an
electrician’s
screwdriver
cannot correctly
measure voltage.
AC fuse is damaged or
the circuit stops
functioning in order to
prevent power overload.
Replace the fuse or restart
the unit.
Restart the power
overload
prevention system
and find out the
cause of the
overload.
2
Remote control
does not respond or
is less responsive.
Remote control batteries
have run out or remote
control is out of control
area.
Change the batteries and
use remote control with
control area.
3
No air flows from
the unit after the
“On/Speed” button
is pressed.
Heat protection
equipment inside the
motor is working.
Leave the unit off until the
fan motor is cool enough
to be used as usual.
Damaged motor
Repair or replace the
motor with another of the
same model.
Loose motor connection
Determine whether or not
the motor connections are
in order.
Damaged heat relay
Repair or replace the
control panel with another
of the same model.
5
6
4
The pump functions
but it is not cool
enough.
Air ventilation chamber is
not large enough. Filter
pads are clogged or dirty.
Clean or replace the filters.
Check the
parameters of the
replacement parts.
The filter pads are dry or
contain insufficient water
while the air cooler is
working.
Check the water distribution
system to determine whether
or not there is a clog.
Determine if the pump is
functioning correctly.
Excessively high relative
humidity
When the cooler is used for a
prolonged of time, the room
humidity will be very high, so
the cooler will be unable to
lower temperatures as much
as when the room’s humidity
is lower. Turn the pump off
and increase ventilation.
5
The pump fails to
function and provide
cooling
Damaged pump
Repair or replace the pump
with a pump of the same
model.
Loose motor connection
Tighten connection
6
The pump functions
but does not
circulate water, or
the filter pads
contain too little
water.
Clogged or dirty strainer
Clean the strainer.
Clogged water supply hose
Clean the hose.
Clogged drain
Clean the drain.
7
Undesirable odor
The unit is placed in an
area where undesirable
odors are present, or algae
are present in the water
tank.
Clean the cooling machine.
8
White sediments in
the water tank
Water has a high content
of salt
Drain the tank more
frequently.
