Model reference

Sub-Zero PRO4850A

Refrigerator

9 documents63 error codes8 service modes

Available documentation

Service Manual

Sub-Zero Service Manual: PRO4850 (Vol. 7) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 6) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 5) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 1) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 2) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 3) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 4) — Service Manual200 pg
Covers this model
Sub-Zero Service Manual: PRO4850 (Vol. 8) — Service Manual44 pg
Covers this model

Parts Manual

Sub-Zero Parts Manual: PRO 36 and 48 — Parts Manual13 pg
Covers this model

MyPros+ Max

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M+ Max·Sub-Zero Refrigerator

10 1 00 on my Sub-Zero PRO4850A

M+

An open Zone 1 cabinet thermistor.

From Service Manual 485098, p.30:

1.Access service mode to confirm the active fault code and read stored error history.

2.Disconnect the sensor and measure resistance. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens. A reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

Error codes (63)

CodeMeaning

10 1 00An open Zone 1 cabinet thermistor.10 1 01Short in Zone 1 cabinet thermistor.10 1 02Zone 1 cabinet thermistor is unstable.10 1 10An open Zone 1 evaporator thermistor.10 1 11Short in Zone 1 evaporator thermistor.10 1 12Zone 1 evaporator thermistor is unstable.10 2 00An open Zone 2 cabinet thermistor.10 2 01Short in Zone 2 cabinet thermistor.10 2 02Zone 2 cabinet thermistor is unstable.10 2 10An open Zone 2 evaporator thermistor.10 2 11Short in Zone 2 evaporator thermistor.10 2 12Zone 2 evaporator thermistor is unstable.10 3 00An open Zone 3 cabinet thermistor.10 3 01Short in Zone 3 cabinet thermistor.10 3 02Zone 3 cabinet thermistor is unstable.10 3 10An open Zone 3 evaporator thermistor.10 3 11Short in Zone 3 evaporator thermistor.10 3 12Zone 3 evaporator thermistor is unstable.10 7 00An open ambient thermistor on the control board.10 C 00An open condenser thermistor.10 C 01Short in condenser thermistor.10 C 02Unstable condenser thermistor.10 F 00An open Zone 4 cabinet thermistor.10 F 01Short in Zone 4 cabinet thermistor.10 F 02Zone 4 cabinet thermistor is unstable.10 F 10An open Zone 4 evaporator thermistor.10 F 11Short in Zone 4 evaporator thermistor.10 F 12Zone 4 evaporator thermistor is unstable.15 4 00Defrost relay is stuck open.15 4 01Defrost relay is stuck closed.

View all 63 error codes

20 4 50Defrost heater has failed open.35 1 00Zone 1 evaporator fan is open.35 1 33Zone 1 fan speed is slower than setting.35 1 34Zone 1 fan speed is faster than setting.35 2 00Zone 2 evaporator fan is open.35 2 33Zone 2 fan speed is slower than setting.35 2 34Zone 2 fan speed is faster than setting.35 3 00Zone 3 evaporator fan is open.35 3 33Zone 3 fan speed is slower than setting.35 3 34Zone 3 fan speed is faster than setting.35 C 00Condenser fan is open.35 C 33Condenser fan speed is slower than setting.35 C 34Condenser fan speed is faster than setting.40 1 09Zone 1 house alarm 40 1 40Zone 1 excessive compressor runtime.40 2 09Zone 2 house alarm 40 2 40Zone 2 excessive compressor runtime.40 3 09Zone 3 house alarm 40 3 40Zone 3 excessive compressor runtime.40 4 40Zone 4 excessive compressor runtime.40 9 40Dispenser excessive runtime 45 1 00Open in Zone 1 light circuit.45 1 01Short in Zone 1 light circuit.45 2 00Open in Zone 2 light circuit.45 2 01Short in Zone 2 light circuit.45 3 00Open in Zone 3 light circuit.45 3 01Short in Zone 3 light circuit.45 F 00Open in Zone 4 light circuit.45 F 01Short in Zone 4 light circuit.95 1 00Door #1 excessive open time.95 2 00Door #2 excessive open time.95 3 00Door #3 excessive open time.95 F 00Door #4 excessive open time.

Service modes (8)

diagnostic["Touch and hold the Automatic Display Lock icon for 3 seconds","Tap the Settings icon on the Home…
faults_viewer["Enter Diagnostic mode","From the Diagnostic window tap Faults","The Faults screen appears","Tap…
Manual component activation modeSee the instructions in the Controls and Operation section of the service manual.
manual_component_activation["Enter Diagnostic mode","Tap the right arrow","Tap the Manual Activate icon","The Manual Activate…
manual_defrost["Enter Diagnostic mode","Tap the right arrow","Tap Manual Defrost","The Manual Defrost screen…
showroom["Touch and hold the Automatic Display Lock icon for 3 seconds","Tap the Settings icon on the Home…
temp_log_viewer["Enter Diagnostic mode","Tap Temp","The Temp screen appears","Tap the Zone for temperature…
temp_offset["Enter Diagnostic mode","Tap the right arrow","Tap the Temp Offset","The Temp Offset screen…

Full entry steps, exit procedures, and test sequences are available in Max.

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