Follett FZR4-ADA Manuel d'installation, d'utilisation et d'entretien - Page 15
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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 (877) 612-5086 or +1 (610) 252-7301.
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 3 of controller (during
cooling).
2. Control relay coil open or faulty contacts.
1. No power on terminal 2 of controller (during
cooling).
1. Controller not sensing cut off temperature.
2. Control relay defective.
3. Controller keeping refrigeration system ener-
gized.
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 7 of controller (during
defrost).
4. Defrost settings may require change for specific
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.
2. Replace control relay.
1. Replace controller.
1. Replace controller and/or probe.
2. Replace control relay.
3. Replace controller.
1. If fan is not black in color contact Follett for a
retrofit 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.
FZR Undercounter Freezer
15