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e.
Dirty Condenser
f.
Improper condenser cooling
g.
Iced evaporator
h.
Refrigeration system
restriction
i.
Refrigerant leak
j.
Undercharge or overcharge
k.
Failed components
e.
Clean condenser
f.
Check for water flow
g.
Defrost and reset temperature
h.
Call service
i.
Call service
j.
Call service
k.
Call service
7. Unit running
too long
a.
Improper cellar insulation &
seal
b.
Cellar too large
c.
Dirty Condenser
d.
Improper condenser cooling
a.
Check insulation, gasket and
door opening
b.
Check for excessive size
c.
Clean condenser
d.
Check for water flow
8.
Temperat
ure high,
compress
or
stopping
and
starting
but very
short
running time
a.
Failed components
b.
Improper condenser cooling
c.
Overcharge of refrigerant
d.
Discharge or suction
pressure too high
a.
Check compressor windings,
start relay and overload
protector.
b.
Check for condenser water flow
c.
Call service for removing
refrigerant
d.
Call service for information
9. Evaporator
fan running
too
long
a. Post-compressor fan
running
mode for humidity modulation
a. Reset FON
10. Evaporator
fan running
but
condensing
unit not
running
a.
Incorrect or loose wirings
b.
Failed components
c.
Low refrigerant
a.
Check all wirings and
connections
b.
Check start relay, start
capacitor, overload protector,
compressor.
c.
Call service
11.
Temperatu
re low
a.
Low temperature setting
b.
Low ambient temperature
c.
Air probe fault
d.
Temperature controller fault
a.
Raise the setting
b.
Move to another location
c.
Check probe connections or
change a new one
d.
Change a new one
12.
Evapora
tor
freezing
up
a.
Evaporator air flow restriction
b.
Improper condenser cooling
c.
Not stopping due to air leak,
high ambient temperature or
low temperature setting
d.
Defective controller or probe
e.
Low ambient temperature
f.
Initially working then
stopping, moisture in the
system
g.
Refrigerant low or leaking
h.
Expansion valve blockage
a.
Check for fans and CFM
b.
Check for water flow
c.
Check for seal, door opening,
ambient
temperature
and temperature setting
d.
Check for controller and probe
e.
Change defrost settings
f.
Call service
g.
Call service
h.
Call service
