Follett FZR Series Manuale di installazione, funzionamento e assistenza - Pagina 13
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Freezer troubleshooting guide
Check to be sure unit is plugged in. Test outlet with another appliance to verify power
Symptom
Freezer does
not operate (no
components run)
Compressor does not
run
Compressor and
condenser fan do not
run.
Evaporator fan motor
does not run.
Freezer does not shut
off.
Freezer does not
maintain temperature
(all components run).
Evaporator does not
defrost.
If problems persist after following this basic troubleshooting guide, call
Follett's technical service group at (800) 523-9361 or (610) 252-7301
FZR Series 00939124R00
Before Calling For Service
Possible Cause
1.
Power switch faulty or in OFF position;
loose connection.
2.
Freezer not plugged in.
3.
No power to cord.
4.
Temp controller not energizing
components.
5.
Probe not sensing cut in temperature.
1.
Thermal overload open or defective.
2.
Capacitor and/or relay defective.
3.
Compressor defective.
1.
No power on terminal 5 of
controller (during cooling).
1.
No power on terminal 4 of controller
(during cooling).
1.
Controller not sensing cut off
temperature.
2.
Controller keeping refrigeration system
energized.
1.
Fan upgrade needed
2.
Condenser or evaporator coil needs
cleaning.
3.
Faulty door gasket.
4.
Excessively high ambient/humidity.
5.
Refrigerant leak.
6.
Incorrect refrigerant charge.
7.
Plugged expansion valve.
8.
Inefficient compressor.
9.
Evaporator coil blocked with ice.
1.
Defective defrost heater.
2.
Faulty heater safety switch.
3.
No power on terminal 2 of controller
(during defrost).
4.
Defrost settings may require change for
specifi c applications.
Solution
1.
Tun power switch to ON position; check
switch connections.
2.
Connect plug.
3.
Restore power.
4.
Check controller contact terminals for
power. Replace controller if needed.
5.
Replace controller and/or probe.
1.
Allow to cool or replace.
2.
Replace as required.
3.
Replace compressor.
1.
Replace controller.
1.
Replace controller.
1.
Replace controller and/or probe.
2.
Replace controller.
1.
If fan is not black in color contact Follett
for a retrofi t kit.
2.
Clean coils as needed.
3.
Replace door gasket.
4.
Maximum recommended ambient is
86 F (30 C).
5.
Locate and repair leak.
6.
Recover, evacuate and weigh in correct
charge.
7.
Replace expansion valve.
8.
Consult technical service.
9.
Depress defrost button on controller to
defrost coil.
1.
Replace defrost heater.
2.
Replace switch.
3.
Replace controller.
4.
Call Follett's technical service
department.
Service
13