Sub-Zero Classic Series (BI) Control Faults | Control System | Quantum SPI | Error 90 5 97
- Error code 90 5 97
- Classic Series (BI) shows 90 5 97
- 90 5 97
- Control fault control system quantum SPI
- Control panel microcontroller problem
- Turn the home circuit breaker to the unit off for 30 seconds then back on again.
- Retest the unit operation.
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