7 — Troubleshooting
192
Operator Manual
AMSCO® 7000 Series 10432589_G
7.70 SYSTEM ERROR# 20 I/O BOARDS OR CLOCK FAILURE (CRITICAL)
Condition
Error is triggered when communication between I/O boards and controller is lost or if system timer has drifted.
General Troubleshooting
Additional Information
System needs to reboot.
1. Press Silence Buzzer on touch screen to stop alarm
buzzer.
2. Press Ack on touch screen to acknowledge alarm.
3. Wait for system to reboot.
4. If situation reoccurs, contact STERIS.
7.71 SYSTEM ERROR# 21 CYCLE AND UNIT CONFIG. RESET TO DEFAULT (CRITICAL)
Condition
Error is triggered when controller memory has been reset to default values. Also, error is triggered when the application
program detected that contents of the non-volatile memory (EFRAM) is corrupted (after power up sequence).
IMPORTANT: When program is replaced, the alarm is set since nonvolatile memory (EFRAM) is erased and all values are reset
to default values: it is normal in this situation.
NOTE: When this alarm is triggered, user must verify the washer/disinfector values: cycle configuration,
washer/disinfector configuration, system option settings and calibration values since some values might have been
reset to default values.
General Troubleshooting Additional Information
Memory reset to default values.
1. Press Silence Buzzer on touch screen to stop alarm
buzzer.
2. Press Ack on touch screen to acknowledge alarm.
3. Select washer model as per its identification.
4. Contact STERIS.
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