Quick reference for diagnosing and resolving error codes displayed on your Enclave N-Class Autoclave.
The low-temperature detection activates only after the second thermal purging stage has completed. Before that point, a low reading is expected during normal warm-up and does not trigger this error.
The system performs an emergency shutdown: the heater is de-energized, the audible alarm sounds, and the water release valve opens to relieve all chamber pressure. The system then halts and requires a power cycle to restart.
| # | Probable Cause | Plan of Action |
|---|---|---|
| 1 | Temperature sensor (RTD) open circuit — broken wire or loose terminal | Contact Technical Person |
| 2 | Temperature sensor short circuit | Contact Technical Person |
| 3 | Analog-to-digital converter hardware fault on the sensor input channel | Contact Technical Person |
| 4 | Signal conditioning circuit failure (amplifier, voltage reference, or wiring) | Contact Technical Person |
| 5 | Actual extreme temperature caused by heater runaway | Contact Technical Person |
| 6 | Heater element failure producing no heat output (low-temperature condition detected in later phases) | Contact Technical Person |
The timeout is measured from system start-up, not from the beginning of each individual purging stage. If earlier purging stages consumed significant time, less time remains before this error triggers on subsequent stages.
Emergency shutdown with full pressure relief (same as Error 1).
| # | Probable Cause | Plan of Action |
|---|---|---|
| 1 | Heater element burned out or disconnected | Contact Technical Person |
| 2 | Heater relay failed in the open position (not closing) | Contact Technical Person |
| 3 | Mains power supply under-voltage or interrupted | Contact Technical Person |
| 4 | Temperature sensor fault returning false low readings | Contact Technical Person |
| 5 | Chamber door seal failure causing excessive heat loss | Contact Technical Person |
| 6 | Excessive water load placed in the chamber | Contact Technical Person |
Note: During the confirmation waiting period, the sensor-failure check (Error 1) also runs. If the sensor reading is extremely abnormal, Error 1 may trigger before Error 3 completes its confirmation.
Emergency shutdown with full pressure relief (same as Error 1).
| # | Probable Cause | Plan of Action |
|---|---|---|
| 1 | Heater relay contacts welded closed (relay cannot be turned off) | Contact Technical Person |
| 2 | Temperature control logic not cycling the heater off correctly | Contact Technical Person |
| 3 | Temperature sensor fault returning false high readings | Contact Technical Person |
| 4 | Residual heat from a previous aborted cycle (chamber not cooled before restart) | Contact Technical Person |
In high-temperature mode, there is an additional safety check: if the temperature exceeds a secondary threshold through a different detection path (when the normal cooling branch was not entered), the system shuts down at a slightly lower threshold to account for the rapid temperature rise.
Emergency shutdown with full pressure relief (same as Error 1).
| # | Probable Cause | Plan of Action |
|---|---|---|
| 1 | Heater relay contacts welded closed (heater cannot be turned off) | Contact Technical Person |
| 2 | Heater thermal mass causing excessive temperature overshoot | Contact Technical Person |
| 3 | Temperature sensor drift producing false high readings | Contact Technical Person |
| 4 | Exhaust solenoid valve stuck closed (unable to vent steam for cooling) | Contact Technical Person |
| 5 | Pressure release valve malfunction (unable to reduce chamber temperature) | Contact Technical Person |
| 6 | Chamber pressure exceeding expected levels due to excess water or trapped air | Contact Technical Person |
This error is typically caused by electrical interference, power supply instability, or a defect in the IC chip itself. It may also indicate that a peripheral device on the circuit board has been misconfigured or has developed a fault.
Emergency shutdown with full pressure relief (same as Error 1).
| # | Probable Cause | Plan of Action |
|---|---|---|
| 1 | Electrical noise or electromagnetic interference (EMI) causing spurious signals | Contact Technical Person |
| 2 | Power supply noise, brown-out, or voltage transient during operation | Contact Technical Person |
| 3 | IC chip hardware fault (silicon defect, electrostatic discharge damage) | Contact Technical Person |
| 4 | Circuit board fault — damaged trace, solder bridge, or component failure affecting interrupt lines | Contact Technical Person |
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