Southbend 20108RSB - Manual (Page 9)

TROUBLESHOOTING
9 Printed in USA 12/02 Refrigerated Base-Remote © 2002
INTRODUCTION
This chapter provides a systematic check of components in
determining a possible cause of failure in the event of various
symptoms.
It is necessary that the individual performing the
troubleshooting tasks be familiar with the function of the
equipment as described in the Functional Description section.
The following tables list the most common symptoms that
may be experienced and the recommended corrective action.
Table 5.1 - Mechanical and Electrical Troubleshooting Guide
SYMPTOM POSSIBLE FAILURE REMEDY
Unit does not operate
Unit runs continuously
Low head pressure
High head pressure
Short cycling
Unit does not cool
1. Control failure
2. Incorrect voltage
3. Failed compressor i
1. Low on refrigerant
2. Control failure
3. Bad connection at TXV
4. Restricted air flow or dirty
5. Bad condenser fan motor i
6. TXV stuck open
7. Compressor failure
8. Ineffective door seal
9. Restricted circulation in
storage compartment
1. Defective compressor i
2. Low refrigerant
3. Ambient temperature too low
1. Blocked or dirty condenser i
2. Ambient temperature too high
3. System contains air
4. Refrigerant overcharge
1. Maladjusted control
1. Blown fuse/circuit breaker
2. Bad connection at supply cord
3. Ill fitting gasket
1. Adjust or replace control
2. Correct
3. Replace
1. Leak check system and recharge
2. Adjust or replace control
3. Check and secure sensor bulb to suction line
4. Rectify air flow problem and clean condenser
5. Check and replace if necessary
6. Replace
7. Replace
8. Adjust door strike and hinges
9. Redistribute food for even air flow
1. Replace
2. Leak check system and recharge
3. Raise room temperature
1. Clean and remove any obstructions
2. Lower room temperatures
3. Evacuate, change filter dryer, recharge
4. Reduce amount of refrigeration in system
1. Adjust control
1. Replace fuse/reset circuit breaker
2. Check supply cord at outlet
3. Tighten strike on door latch
i If supplied with a condensing unit