10
TROUBLESHOOTING
SOLUTONSPOSSIBLE CAUSES
UNIT DOES NOT START
Unit ma y have becom e unp lugged
Fuse may have blown
Circuit breaker may have bee n tripped
Unit ma y be off
Unit ma y be in a protection mode.
Ch eck tha t plug is plugged secure ly in wall rece ptacle.
Plug ha s a test/reset button on it.M ake sure that the plug has
not tripped.
Re place the fuse.See N ote 1.
Re set circuit breaker.See Note 1.
Turn u nit on (bottom right button on keypad).
Note:
UNIT NOT COOLING/HEATING ROOM
Unit air discharge section is blocked
Tem perature setting is not high or low
enough
Setpoint limits may not allow the
unit to heat or cool the room to the
temperature desired. Check section on
dipswitch settings.
Unit air filters are dirty.
Roo m is excessively hot or cold when
unit is started.
Vent door left open.
Unit ma y be in a protection mode.
Compressor is in time delay.
Note:
Make sure that curtains,blin ds or furniture are not restricting or
blockin g unit airflow.
Re set to a lower or higher tem perature setting.
Re move and clea n filters.
Allow sufficient amount of time for unit to hea t or cool the room.Start
hea ting or cooling ea rly before outdoo r temperature,cooking heat or
gatherings of people ma ke room uncomfortable.
Close ven t door.
Ch eck dip switch settings fo r de sired com fort.
Wait approximately 3 m inutes for com pressor to start.
DISPLAY HAS STRANGE NUMBERS/
CHARACTERS ON IT
The unit may be in a protection mode.
The unit may be set for C (instea d of F).
O O
UNIT MAKING NOISES
Clickin g,gurging and whooshing noises are normal during operation
of unit.
WATER DRIPPING OUTSIDE
If a dra in kit has not been installed,condensation runoff du ring ve ry
hot and humid w eather is normal.See Note 2.If a drain kit has be en
installe d and is conn ected to a drain system,check gaskets and
fittings aro und drain for leaks and plu gs.
WATER DRIPPING INSIDE
Wall sleeve is not installed le vel
Wall sleeve must be installed level for proper drainag e of
condensation .Check that installation is level an d m ake any
necessary adjustments.
ICE OR FROST FORMS ON INDOOR
COIL
Low outdoor temperature
D irty filters
When outdoor temperature is approximately 55OF or b elow,frost
may form on the indoor coil when unit is in C ooling mode.Switch unit
to FAN operation un til ice or frost melts.
Re move and clean filters.
COMPRESSOR PROTECTION
Power m ay have cycled,so comp ressor
is in a restart protection.
Random Compressor restart-
Compressor Protection-
Whenever the unit is plugg ed in,or
power has been restarted,a random com pressor restart will occur.
Afte r a power outage,th e compressor will restart after approximately
3 m inu tes.
To preve nt short cycling of the com pressor,
there is a random startup delay of 3 m inutes and a minim um
compressor run time of 3 m inutes.
NOTES:
1.If circuit breaker is trippe d or fuse is blown more than once,contact a qua lified electrician.
2.If unit is installed where condensation drainag e could drip in an undesirable location,an accessory drain kit
shou ld be installed and connected to drain system.