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Kenneth ThompsonAug 10, 2025
How to fix a Defiant 18000028 when the doorbell doesn't sound?
- SStephanie OliverAug 10, 2025
If your Defiant Intercom System doorbell isn't sounding, several factors could be at play. First, ensure the batteries are correctly installed, matching the diagram inside both the push button and the doorbell. Next, check if the batteries are dead and replace them if needed. The push button and doorbell might need syncing: press and hold the “Sync/Music” button on the doorbell until it beeps twice, then press the push button within 10 seconds; a double beep confirms syncing. Also, verify that the chime isn't muted by pressing and releasing the mute button until the green light turns off. Finally, confirm that dip switch #1 in the push button is in the “OFF” position, and then re-sync the devices.
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