User's Manual

Isotempâ Laboratory and Chromatography Refrigerators
Page 9 of 12
Part Number: 104416
Trouble Shooting
Table
This table is intended to assist in resolving user-correctable
Refrigerator problems by relating symptoms to their likely causes. If
service beyond the scope of this table is required, contact Fisher
Scientific Service Division @ 1-800-395-5442.
Symptom Probable Cause Action
Does Not Run Unit Unplugged
Blown fuse or tripped circuit
breaker.
Plug in Unit
Check fuse or circuit
breaker at breaker
box.
Runs
Continuously
Frost buildup on refrigeration
coils
Defrost unit. Increase
Ho time.
Clicking
Sound
The compressor is equipped
with a thermal protector. This
device shuts off the
compressor when it becomes
to hot. A clicking sound
occurring about every 30
seconds indicates this
protector is working
Disconnect power and
call for service.
Insufficient
Cooling
Set temp is to high
Condenser coil dirty
Unit frosted
Reduce temperature
setting, verify Cool
LED is on.
Clean condenser coil
with a vacuum cleaner
Defrost unit
Display shows
E1 (error
code)
Open sensor Check sensor
connection
Display shows
E2 (error
code)
Under Temp Temperature at sensor
is less than –36°C or
sensor is
malfunctioning.
Display shows
E3 (error
code)
Over Temp Temperature at sensor
is greater than 37°C or
sensor is
malfunctioning