Sub-Zero · Refrigerator error code
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Guide · RefrigeratorThe inverter board only drives the compressor when it has line power, a run signal from the main board and a compressor with sound windings. Forum threads describe owners swapping two or more inverter boards before anyone checked the compressor or the signal. The wrong turn is a second board without checking supply, signal, windings and case ground; a bad compressor is sealed-system work and gets referred.
Component test · RefrigeratorInverter boards make variable-frequency 3-phase power for the compressor. Electrical checks of the board and compressor terminals are allowed; anything that opens the sealed refrigerant system is EPA 608 work and blocked. Boards fail more often than compressors.
Guide · RefrigeratorRule out settings, demo/cooling-off mode and airflow first, then confirm whether the compressor and condenser fan run. If the compressor is running but nothing gets cold, or it won't start even though the start components and power check out, it's a sealed-system problem and goes to an EPA 608-certified tech.
Sub-Zero · Refrigerator
10 1 02
Zone 1 cabinet thermistor unstable
Sub-Zero · Refrigerator
10 r 00
Refrigerator evaporator thermistor open
Sub-Zero · Refrigerator
10 r 02
Refrigerator evaporator thermistor unstable
Sub-Zero · Refrigerator
10 r 09
Evaporator reads warmer than cabinet
Sub-Zero · Refrigerator
15 1 01 / 15 2 01
Compressor relay reported stuck closed
Sub-Zero · Refrigerator
20 2 07
Freezer defrost under-heat