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7. Unit running too
long
8. Condenser fan
running but
compressor not
running
9. Compressor
running but
condenser fan
not running
10.Temperature
high, compressor
stopping and
starting but very
short
running time
11.Evaporator fan
running too long
12. Evaporator fan
running but
condensing
unit not
running
13.Temperature low
14.Evaporator
freezing up
e. Malfunctioning fans
f.
Evaporator or condenser
airflow
g. Dirty Condenser
h. Iced evaporator
i.
Refrigeration system restriction
j.
Refrigerant leak
k.
Undercharge or overcharge
l.
Failed components
a. Improper cellar insulation & seal
b. Exhaust restricted
c. Cellar too large
d. Ambient temperature > 90°F
e. Dirty Condenser
f. Improper condenser air flow
a. Incorrect or loose wirings
b. Failed components
c.
Liquid
refrigerant
the compressor
a. Fan blade stuck
b. Incorrect or loose wirings
c.
Failed motors
d. Fan cycle control
a. Failed components
b. Improper condenser airflow
c.
Dirty condenser
d. Overcharge of refrigerant
e. Discharge or suction pressure
too high
a. Post-compressor
mode for humidity modulation
a. Incorrect or loose wirings
b. Failed components
c.
Low refrigerant
a. Low temperature setting
b. Low ambient temperature
c. Air probe fault
d. Temperature controller fault
a. Evaporator air flow restriction
b. Condenser air flow restriction
minimum 1 foot clearance for the
ambient air intake side
e. Check for both evaporator and
condenser fans
f.
Check for air restrictions, air
short- circulation, grille directions
g. Clean condenser
h. Defrost and reset temperature
i.
Call service
j.
Call service
k.
Call service
l.
Check compressor windings, start
relay and overload protector
a. Check insulation, gasket and door
opening
b. Leave minimum 3 feet clearance for
the hot air exhaust side and leave
minimum 1 foot clearance for the
ambient air intake side
c. Check for excessive size
d. Check for installation location
e. Clean condenser
f. Check
circulation
a. Check all wirings and connections
b. Check start relay, start capacitor,
overload protector, compressor.
in
c.
Call service.
a. Check for proper clearance
b. Check all wirings
c.
Call service
d. Check for setting
a. Check compressor windings, start
relay and overload protector.
b. Check for condenser fan
c.
Clean condenser
d. Call service for removing refrigerant
e. Call service for information
fan
a. Reset FON
running
a. Check all wirings and connections
b. Check start relay, start capacitor,
overload protector, compressor.
c.
Call service
a. Raise the setting
b. Move to another location
c. Check probe connections or
change a new one
d. Change a new one
a. Check for fans and CFM
b. Check for fans and CFM
-12-
for
fan
and
air
short
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