Info, impact, causes, and troubleshooting a "Device Two Wire No Response" message.
Common Causes
- Damaged or corroded wire splices.
- Incorrect wire splices.
- Poor splices exposed to water in valve box.
- Damaged two-wire path.
What Happens Now?
- The biCoder was originally assigned to the controller but is no longer able to communicate with the device.
- This is because the controller can’t run or test the zone.
- Alert: Zone 13 is having an issue occur, which the zone is linked with the Serial number, E188171 which is where troubleshooting should begin.
Troubleshooting
- Replacing the incorrect splices with DBR/Y-6 splices according to the specification.
- If there is any damage to the two-wire path, isolate and repair that section of wire.
- Remove the biCoder and bring it back to the controller to test it directly, without the two-wire path connected. This helps rule out the biCoder as the issue and confirm whether the problem lies in the wiring and splices.