Randell 51000 Series, Operator'S Manual

OM-51000 & 53000 SERIES       13

Troubleshooting

This unit is designed to operate smoothly and efficiently if properly maintained. However, the following is a list of checks to make in 

the event of a problem. Wiring diagrams are found at the end of this manual.

SYMPTOM

POSSIBLE CAUSE

PROCEDURE

Unit does not run

1.  No power to unit

2.  Temperature control turned off

3.  Temperature control faulty

4.  Compressor overheated

5.  Condenser fan faulty

6.  Overload protector faulty

7.  Compressor relay faulty

8.  Compressor faulty

1.  Plug in unit

2.  Check temperature control

3.  Test temperature control

4.  Clean condenser coil

5.  Service condenser fan

6.  Test overload

7.  Test relay

8.  Call for service at 888-994-7636

Unit short cycles

1.  Condenser coil dirty

2.  Condenser fan faulty

3.  Compressor faulty

4.  Overload repeatedly tripping

1.  Clean coil

2.  Service fan and motor.

3.  Call for service at 888-994-7636

4.  Check outlet voltage

Unit runs constantly

1.  Condenser coil dirty

2.  Condenser fan faulty

1.  Clean coil

2.  Service condenser motor

Unit not cold enough

1.  Temperature control set too high

2.  Temperature control faulty

3.  Condenser coil dirty

4.  Refrigerant leaking or contaminated

1.  Adjust control to lower setting

2.  Test control

3.  Clean coil

4.  Call for service at 888-994-7636

Unit too cold

1.  Temperature control set too low

2.  Temperature control faulty

1.  Adjust control to raise setting

2.  Test control

Drawer Issues

1. Drawer tracks backwards

2. Roller bearings loose

1. Check installation of drawer track – page 12

2. Tighten bearings

Unit noisy

1.  Compressor mountings loose or hardened

2.  Condenser fan damaged or hitting fan shroud

1.  Tighten or replace compressor mountings

2.  Inspect condenser fan

Moisture around door or 

frame

1.  Breaker strip faulty

2.  Frame heater faulty

3.  Temperature control set too low

1.  Inspect strips

2.  Call for service at 888-944-7636

3.  Adjust control to raise setting

Ice in drain pain or water 

in bottom of unit or floor

1.  Drain tube clogged

2.  Unit not level

1.  Clean drain

2.  Adjust leveling feet

When in doubt, turn unit off and call for service and call for service at 888-944-7636.