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TROUBLESHOOTING GUIDE
In the event of an error code, unplug the 3M™ Attest™ Auto‑reader 390G and plug it back in to initiate the self‑diagnostic test. If error code re‑occurs, call for repair or replacement.
The LCD display panel will indicate detected malfunctions by displaying a caution or error code under affected BI wells. The audible alarm, if active, sounds and the LCD display backlight flashes to alert the user to all caution (except C1) and error codes. The alarm and backlight can be silenced and extinguished, respectively, by pressing the Buzzer Alarm OFF
button 
. Note that disabling the audible alarm does not disable the flashing LCD display backlight. Refer to the following:
Code/Issue | Problem | Solution | |
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C1 | Unit Warm‑up Caution | Allow a 30 minute warm‑up after 3M™ Attest™ Auto‑reader 390G is plugged in. (Note: 3M™ Attest™ | |
Incubation block not at temperature. | Rapid Readout BI readings are disabled until incubator block reaches 37ºC +/‑ 2ºC). | ||
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| BI Removed from Well Caution | Replace 3M™ Attest™ Rapid Readout BI in proper well within 10 seconds to prevent loss of collected | |
C2 | 3M™ Attest™ Rapid Readout BI has been removed before | ||
data. | |||
| incubation is complete. | ||
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C4 | Ambient Light Caution | Move 3M™ Attest™ Auto‑reader 390G to reduced ambient light conditions. | |
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| Temperature Control Error | Unplug the unit and plug it back in to clear error. | |
E1 | This error will occur if system is no longer able to control | ||
If error doesn’t clear, call for repair or replacement. | |||
| the temperature of the incubator block (37ºC +/‑ 2ºC). | ||
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| Memory Error | Unplug the unit and plug it back in to clear error. | |
E3 | 3M™ Attest™ Auto‑reader 390G unable to save/read data | ||
If error doesn’t clear, call for repair or replacement. | |||
| from memory. | ||
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E7 | Communications Error | Call for repair or replacement. | |
This error will occur if internal communications have failed. | |||
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| LED Error | Unplug the unit and plug it back in to clear error. | |
E8 | This error occurs for a specific well if the system detects | ||
If error doesn’t clear, call for repair or replacement. Do not use affected incubation well. | |||
| that a UV LED or Optics Detection circuit is not working. | ||
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| BI Inserted Incorrectly Error | Ensure BI is designed to be incubated and read in the 3M™ Attest™ Auto‑reader 390G. | |
E11 | Incubation time remaining will not display and fluorescent | ||
Ensure BI is fully inserted into incubation well. | |||
| readings are not taken. | ||
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| Power Failure Error |
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E12 | Power to Auto‑reader was off for too long to provide valid | Ensure power supply connection to Auto‑reader is secure. | |
| result for affected BI(s). |
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E14 | Ambient Light Error (occupied well) | Rely on optional visual pH color change result for BI in affected well. Move 3M™ Attest™ | |
Fluorescent result will not display. | Auto‑reader 390G to reduced ambient light conditions to avoid future occurrences. | ||
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Other | Unwanted alarm sounds when positive BI detected. | Disable alarm; refer to 3M™ Attest™ Auto‑reader 390G Configuration section for instructions. | |
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| Alarm Sounds | Replace 3M™ Attest™ Rapid Readout Biological Indicator in incubation/reader well within 10 seconds | |
Other | 3M™ Attest™ Rapid Readout Biological Indicator has been | ||
to prevent loss of data collected. | |||
| removed from incubation/reader well prematurely. | ||
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Other | LCD panel does not display properly. | Unplug the unit and plug it back in. If problem persists call for repair or replacement. | |
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Other | Negative Control Vial | Ensure BI cap is closed, and glass ampoule is crushed. Tap BI until media flows to and wets spore strip | |
BI not properly activated/ media did not contact spore strip. | at bottom of BI. | ||
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Other | Negative Control Vial | Check process indicator on BI label. Use a non‑sterilized vial as a control. | |
Control vial was sterilized. | |||
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Other | Unexplained Positive BI | Do not place tape or labels on vial. | |
Adhesive residue on vial. | |||
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| Unexplained Positive BI |
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Other | Test vial is absorbing fluorescent residue from a chemical | Place the vial so it does not come in direct contact with chemical indicators or tape. | |
| indicator or tape. |
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| 3M™ Attest™ Auto‑reader 390G will not enter |
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Other | Configuration mode. | On 3M™ Attest™ Auto‑reader 390G Web App Configuration Page, go to Pushbutton Configuration and | |
Pushbutton Configuration may be disabled on | select the Enable radio button. Save changes to begin using new setting. | ||
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| 3M™ Attest™ Auto‑reader 390G Web App. |
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| 3M™ Attest™ Auto‑reader 390G LCD display flashes |
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Other | and asterisks (***) and/or E11 and/or C4 codes appear on | Move 3M™ Attest™ Auto‑reader 390G away from sunlight or sources of incandescent light. | |
| display below unoccupied incubation wells. |
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