Wired doorbell does not ring the existing chime

The doorbell works in the app but the indoor mechanical chime no longer rings.

Applies to

Wired video doorbells
Doorbells replacing a mechanical chime
Doorbell transformers

Last verified2026-10-14

Quick answerTroubleshooting · last verified 2026-10-14

The doorbell works in the app but the indoor mechanical chime no longer rings. Most common cause to check first: Transformer voltage below the doorbell requirement

Applies toWired video doorbells, Doorbells replacing a mechanical chime, Doorbell transformers

CategoryVideo Doorbells

Escalate whenNever bridge or bypass a transformer above its rating to force a chime to work. If the chime needs more power than the transformer supplies, upgrade the transformer instead of rewiring around it.

Last verified2026-10-14

How to cite this page

IoT Atlas. "Wired doorbell does not ring the existing chime". https://hi-spark.net/troubleshooting/doorbell-mechanical-chime-not-working.html Last verified 2026-10-14.

Likely causes

Transformer voltage below the doorbell requirement
Indoor chime not enabled in the app settings
Chime kit not installed or miswired
Digital chime not supported by the doorbell model
Existing chime mechanism worn out

Quick checks

Check transformer voltage and rating
Look for an indoor chime toggle in the app
Confirm the chime kit wiring from the manual
Test the chime by shorting the terminals briefly with care

Step-by-step fix

Read the doorbell power requirements from the official manual

Check the transformer rating printed on the unit

Enable the indoor chime in the app and set the duration

Reinstall the chime kit following the manufacturer diagram

If it still fails, have an electrician upgrade the transformer

Frequently asked questions

Why does this happen: Wired doorbell does not ring the existing chime?

The doorbell works in the app but the indoor mechanical chime no longer rings.

What is the most likely cause?

Transformer voltage below the doorbell requirement; Indoor chime not enabled in the app settings; Chime kit not installed or miswired.

What should I check first?

Check transformer voltage and rating; Look for an indoor chime toggle in the app; Confirm the chime kit wiring from the manual; Test the chime by shorting the terminals briefly with care.

How is it fixed?

Read the doorbell power requirements from the official manual; Check the transformer rating printed on the unit; Enable the indoor chime in the app and set the duration; Reinstall the chime kit following the manufacturer diagram; If it still fails, have an electrician upgrade the transformer

When should the case be escalated?

Never bridge or bypass a transformer above its rating to force a chime to work. If the chime needs more power than the transformer supplies, upgrade the transformer instead of rewiring around it.