Installation guide
¢
Buzzer
beeps
When
the
unit
is
ON
and
the
Emergency
button
is
pressed
for
5
seconds,
the
unit will
operate
as
follows:
¢
The
unit
is
turned
off
¢
Buzzer
beeps
When
a
signal
is
received
by
the
remote
control,
the
unit
operates
accordingly.
A09553
Fig.
45
-
Warning
Lamps
and
Emergency
Button
Table
15
—
Troubleshooting
PROBLEM
POSSIBLE
CAUSE
SOLUTION
Compressor
and
Fan
of
the
Outdoor
Unit
Will
Not
Start
Unit not
energized
Check
the
main
power
connection.
Main
switch
is
set
to
OFF
Check
and
put
it
to
ON
position.
Main
switch
fuses
are
blown
Replace
fuses.
Compressor
cycling
protection
is
on
Wait
for
3
minutes.
Main
power
voltage
is
too
low
Check
and
set
to
the
correct
voltage.
Electrical
connections
are
too
loose
or
are
wrong
Check
and
tighten
or
correct
connections.
Compressor
Will
Not
Start,
But
Out-
door
Fan
is
Operating
Electrical
connections
of
compressor
are
loose
or
wrong
Check
and
tighten
or
repair
compressor.
Compressor
Stops Due
to
Over—tem-
perature
Compressor
burnt
out;
seized
or
protection
device
on
Check
for
the
cause
and replace
compressor
if
neces-
sary.
Wrong
refrigerant
charge
in
unit
(excessive
or
low)
or
air
or
other
non—condensable
gasses
in
the
circuit
Drain
refrigerant,
evacuate
and
recharge.
CAUTION:
Do
not
vent refrigerant
to
the
atmosphere;
use
refrigerant
recovery
equipment.
Main
voltage
is
too
high
or
too
low
Check
voltage
setting
and
adjust
if
necessary.
Condenser
coil
obstructed
Remove
obstruction.
Outdoor
fan
off
Check
cause
and
resume
operation
or
repair.
Wrong
indoor
unit
thermistors
Replace
thermistors.
Refrigerant
circuit
clogged
Check
and
remove
obstructions.
Reversing
valve
faulty
on
heat
pump
models
Replace
reversing
valve.
Expansion
device
clogged
or
covered
with
ice
Drain
refrigerant,
evacuate
and
recharge.
CAUTION:
Do
not
vent refrigerant
to
the
atmosphere;
use
refrigerant
recovery
equipment.
Compressor
Runs
Continuously
Unit
selected
is
too
small
for
application
require-
ments
Contact
a
qualified
service
technician
for
a
system
evalu-
ation.
Indoor
temperature
setting
too
low
or
too
high
Check
temperature
setting.
Outdoor
unit
fan
faulty
Replace
outdoor
fan.
Air
or
other
non—condensable
gasses
in
the
cir-
cuit
Drain
refrigerant,
evacuate
and
recharge.
CAUTION:
Do
not
vent refrigerant
to
the
atmosphere;
use
refrigerant
recovery
equipment.
Obstructions
at
air
intake
or
dirty
indoor
unit
filters
Remove
obstruction
and/or
clean
filter.
Frequent
Ice-—Build-—Up
on
Outdoor
Coil
Outdoor
fan
is
stopped
Check
cause
and
repair.
Discharge
Pressure
Too
High
Outdoor
coil
dirty
or
obstructed
Clean
or
remove
obstructions.
Condenser
fan
faulty
Replace
condenser
fan.
Indoor
temperature
setting
too
low
or
too
high
Check
temperature
setting.
Air
or
other
non—condensable
gasses
in
the
cir-
cuit
Drain
refrigerant,
evacuate
and
recharge.
CAUTION:
Do
not
vent refrigerant
to
the
atmosphere;
use
refrigerant
recovery
equipment.
Discharge
Pressure
Too
Low
Indoor
temperature
setting
too
high
or
too
low
Check
temperature
setting.
Outdoor
coil
dirty
or
obstructed
Clean
or
remove
obstructions.
Indoor
unit
air
filter
dirty
Clean
filter.
Suction
Pressure
Too
High
Indoor
temperature
setting
too
high
or
too
low
Check
temperature
setting.
Reversing
valve
faulty
or
internal
leak
Replace
reversing
valve.
Suction
Pressure
Too
Low
Indoor
temperature
setting
too
high
or
too
low
Check
temperature
setting.
Evaporator
coil
covered
with
ice
Air
circulation
on
the
evaporator
not sufficient;
check
and
repair.
Expansion
device
or
suction
line
clogged
Check
and
repair.
Outdoor
fan
does
not
stop
during
defrost
periods
Check
electrical
parts.
Outdoor
Fan
Cycling
Due
to
Over-
Temperature
Protection
Electrical
connection
loose
Check
connections.
Fan
motor
burn
out
Replace.
Fan
bearing
seized
Check
and
repair.
Expansion
device
clogged
or
covered
with
ice
Drain
refrigerant,
evacuate
and
replace.
CAUTION:
Do
not
vent refrigerant
to
the
atmosphere;
use
refrigerant
recovery
equipment.