Thetford NR740 - Manual (Page 2)

DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T,
DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models
Refrigerator Service Manual 2
Table of Contents
Troubleshooting - Procedure A
Compressor Doesn't Run with Thermostat "On" .............3
Troubleshooting - Procedure B
Compressor Resistance ..................................................4
Measuring the Compressor Resistance ..........................4
Troubleshooting - Procedure C
Power Supply Output Voltage .........................................5
Troubleshooting- Procedure D
Measuring Compressor Amp Draw .................................6
Troubleshooting - Procedure E
Verifying Thermistor Operation .......................................7
Troubleshooting - Procedure F
Insufficient Cooling ..........................................................8
Troubleshooting - Procedures G
Refrigerator is Too Cold ..................................................8
Troubleshooting - Procedure H
Auto Shut-Off Device.......................................................8
Operating the Shut-Off Device ....................................8
Troubleshooting - Procedure I
Proper Ventilation ............................................................9
Wiring Schematic ............................................................9
Troubleshooting - Quick Reference
Quick Reference Troubleshooting Steps.......................10
!
WARNING! Perform all tests using a fully
charged 12V DC battery. Using other equip-
ment that supplies DC voltage may cause
permanent refrigerator component failure.