Model reference
Sub-Zero UC-24BA/S/PH-RH
Refrigerator
4 documents11 error codes15 service modes
Available documentation
Service Manual
- Sub-Zero UC-24 Enhancements: After Serial 3603000 — Service Manual110 pg
- Sub-Zero Original: Prior to Serial 3603000 — Service Manual101 pg
Parts Manual
- Sub-Zero Original: Prior to Serial 3603000 — Parts Manual34 pg
- Sub-Zero UC-24 Enhancements (7031932): After Serial 3603000 — Parts Manual27 pg
MyPros+ Max
Diagnose your Sub-Zero UC-24BA/S/PH-RH.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
Start diagnosing
$29/month · Cancel anytime · Or $9.95 3-day pass
Error codes (11)
CodeMeaning
05Refrigerator cabinet thermistor read open or shorted for 10+ seconds, or…06Refrigerator evaporator thermistor read open or shorted for 10+ seconds, or…07Freezer cabinet thermistor read open or shorted for 10+ seconds, or repeatedly…08Freezer evaporator thermistor read open or shorted for 10+ seconds, or…20Defrost under-heat with no voltage feedback through Gray/White wire at defrost…21Defrost overheat.22No voltage feedback through Gray/White wire at defrost start.23Defrost overheat with no voltage feedback through Gray/White wire at defrost…24Defrost under-heat.40Excessive Freezer Compressor Run (UC-24C Only).50Excessive Refrigerator Compressor Run (UC-24B, UC-24R, UC-24RO).Service modes (15)
- Automatic Entry Model Configuration Mode1. When a new main control board is installed, double dashes (--) appear on LCD automatically. 2…
- Clear Error Codes (UC-24B/R/RO)1
- Clear Error Codes (UC-24C)1
- Clear Error Codes / Non-Flashing SERVICEUnit must be ON, problem must be corrected. UC-24C
- Diagnostic Mode (Actual Temperature Display Mode)1
- Manual Component Activation Mode1. Unit must be ON. 2. Press and hold the desired COLDER key and the POWER key for 10 seconds. All…
- Manual Entry Model Configuration Mode1
- Manual Freezer Evaporator Defrost (UC-24C Only)1
- Sabbath Mode1
- Showroom Mode1
- Temperature Log Recall Mode (Compartment and Evaporator)1
- Temperature Log Recall Mode (Compartment Only)1
- Temperature Units Selection (UC-24B, UC-24R, UC-24RO)1
- Temperature Units Selection (UC-24B/R/RO)1
- Temperature Units Selection (UC-24C)1
Full entry steps, exit procedures, and test sequences are available in Max.
Related Sub-Zero refrigerator models
78,000+ service manuals · 160,000+ error codes · 55+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass