1-800-777-8466
PROBLEM
POSSIBLE CAUSES
RESPONSE
Temperature too
high
Unit running too
long or continually
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
Setting too high
Improper cabinet seals
Cabinet too large
Ambient temperature too high
Exhaust too close to wall or ceiling
Malfunctioning fans
Improper evaporator or condenser
airflow
Dirty condenser
Iced evaporator
Sealed system problem
Undercharge or overcharge
Operating 60Hz unit at 50Hz
Low voltage
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
Lower setting
Check gasket and door opening
Check for excessive size
Check installation location
Leave 4~6” clearance between the
exhaust side and the wall or ceiling;
clearance for the fresh air intake;
leave 1~2” for the other sides
Check both evaporator and condenser fans
Check for air restrictions
Clean condenser
Defrost and reset temperature
Call service to check loss of refrigerant or
restrictions
Call service to add or remove refrigerant
Check power supply
Use proper 60Hz
Check power supply
Improper room insulation & seal
Exhaust restricted
Room too large
Ambient temperature too high
(> 80°F)
Improper evaporator or condenser
airflow
Dirty condenser
Iced evaporator
Malfunctioning fans
Sealed system problem
Undercharge or overcharge
Operating 60Hz unit at 50Hz
Low voltage
Check for insulation, gasket and door
opening
Leave minimum 3 feet clearance for the
exhaust side and leave minimum 1 foot
clearance for the fresh air intake side
Check for excessive size or increase setting
Check installation location or increase
setting
Check for air restrictions
Clean condenser
Defrost and reset temperature
Check both evaporator and condenser fans
Call service to check loss of refrigerant or
restrictions
Call service to add or remove refrigerant
Use proper 60Hz
Check power supply
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