| Problem | Possible Cause | Solution |
| Detector does not activate |
| No battery |
| Depleted battery |
| Damaged or defective detector |
| Reversed battery |
|
| Install battery |
| Replace battery |
| Contact BW Technologies by Honeywell |
| Reinstall the battery correctly |
|
| Detector enters alarm mode immediately when it is activated
|
| Sensor needs to stabilize |
| Low battery alarm |
| Sensor alarm |
|
Used sensor: wait 60 seconds.
New sensor: wait 5 minutes |
| Replace battery |
| Replace sensor |
|
| Start up self-test fails during checks
|
| General fault |
| Alarm setpoints incorrect |
|
| Contact BW Technologies by Honeywell |
| Reset alarm setpoints |
|
| Detector does not display a normal ambient gas reading after activation self-test |
| Target gas is present |
| Detector requires calibration |
| Sensor not stabilized |
|
| Detector is operating properly. Use caution in suspect areas |
| Calibrate detector |
Used sensor: wait 60 seconds
New sensor: wait 5 minutes |
|
| Detector does not respond to the push-buttons |
| Battery is depleted |
| Detector is performing operations that does not require user input |
|
| Replace battery |
| Pushbutton operation restores automatically when operation ends |
|
| Detector does not accurately measure gas |
| Detector requires calibration |
| Detector is colder/hotter than ambient gas |
| Sensor screen is blocked |
|
| Calibrate sensor |
| Allow detector to acquire ambient temperature before use |
| Clean sensor screen |
|
| Detector does not enter alarm mode |
| Alarm setpoint(s) are set incorrectly |
| Alarm setpoint(s) set to zero |
| Detector is in calibration mode |
|
| Reset alarm setpoints |
| Reset alarm setpoints |
| Complete calibration |
|
| Detector intermittently enters alarm mode without apparent reason |
| Ambient gas levels are near alarm setpoint or sensor is exposed to a puff of the target gas |
| Alarms set incorrectly |
| Missing or faulty sensor |
|
| Detector is operating normally. Use caution in suspect areas. Check MAX gas exposure reading |
| Reset alarm setpoints |
| Replace sensor |
|
| Detector automatically deactivates |
| Automatic shutdown feature activated due to depleted battery | |
|
| Detector does not auto zero or calibrate |
|
|
| O2 sensor reading is erratic |
|
|
