- Networks
- Smart doorbells
P16-110
Ring Intercom P16-110: door didn't unlock in Testing Mode
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
P16-110 means the door did not unlock during Ring Intercom's Testing Mode. Check the wiring against the app diagram and look for an external unlock button on your intercom or an existing wire in the A-5 or C-5 terminal.
Safety first
Stop and check this first
- The entrance lock and lobby panel are shared building equipment: don't open the street panel or touch the lock; that is for the building's installer.
Safe checks you can perform
- Wiring against the diagram and tug test
- External unlock button on the intercom
- A-5 or C-5 terminal
Leave these tasks to a qualified professional
- Do not attempt this professional task: Check the intercom unlock line
- Do not attempt this professional task: Raise the case with Ring Customer Support
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Check the intercom unlock line
What they doAn intercom installer checks the Ring Intercom connections at the handset, the external unlock button if present and the A-5 or C-5 terminal against the app diagram.
They must show youthe unlock connections against the diagram and the door unlocking from the app.
In writingwhich connection was corrected and the unlock test performed.
Raise the case with Ring Customer Support
What they doIf the door still won't unlock after setup is complete, Ring Customer Support reviews the intercom model and wiring photos.
They must show youtheir analysis of the model and wiring.
In writingthe case number and the proposed fix with its reason.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Wiring against the diagram and tug test
- Who:
- you, only at your own flat's handset.
- How:
- compare every wire with your model's diagram in the Ring app and gently tug each one; none should come loose.
- Result that matters:
- whether any wire is misplaced or loose.
- If you correct a wire and the door unlocks in the test:
- it was the wiring.
- If wiring is correct:
- check the unlock button and the A-5 or C-5 terminal.
- Evidence to keep:
- photo of the terminals before and after correcting.
Evidence: Error codes and network issues for Ring Intercom
External unlock button on the intercom
- Who:
- you, looking at the handset without dismantling shared wiring.
- How:
- look for a separate unlock button on your intercom and, if there is one, check it is properly connected, as Ring advises.
- Result that matters:
- whether that button exists and how it is connected.
- If there is a badly connected external button:
- that explains why unlocking fails; fix its connection or ask an installer.
- If there is no external button:
- check the A-5 or C-5 terminal.
- Evidence to keep:
- photo of the handset and the unlock button, if any.
Evidence: Error codes and network issues for Ring Intercom
A-5 or C-5 terminal
- Who:
- you.
- How:
- look at the intercom terminal where you connected Ring Intercom's A-5 or C-5 wire and check whether another wire was already in that terminal.
- Result that matters:
- whether the unlock terminal holds an existing wire besides Ring's.
- If there is an existing wire:
- note it and ask Ring Customer Support before changing anything.
- If everything looks right but the door doesn't unlock in the test:
- follow Ring's step to select "Yes, it unlocked" and listen for the welcome melody; if the door still won't unlock after setup, contact Ring.
- Evidence to keep:
- photo of the A-5 or C-5 terminal with all its wires.
Evidence: Error codes and network issues for Ring Intercom
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Networks
- Brand
- Ring
- Product type
- Smart doorbells
Known code variants
- P16-110
- Ring Intercom door won't unlock
- Ring Intercom no abre la puerta
- Ring Intercom P16-110
- Ring Intercom P16-110 modo de prueba
- Ring Intercom P16-110 Testing Mode
What it means
Ring explains that P16-110 appears when the door was unable to unlock during the Testing Mode step of setup. It is most likely a wiring issue, but it can also come from an external unlock button on the intercom or from the A-5 or C-5 terminal connection, which is involved in unlocking. The code does not prove the entrance lock or the Ring Intercom is faulty.
Warnings and stop conditions
- Mediumeditorial warning
The entrance lock and lobby panel are shared building equipment: don't open the street panel or touch the lock; that is for the building's installer.
Evidence: Error codes and network issues for Ring Intercom
Symptoms and causes
Probable causes · in order
- Incorrect or loose wiringCommon
The most likely cause according to Ring. Comparing connections with your model's diagram and the tug test separates it.
Evidence: Error codes and network issues for Ring Intercom
- External unlock buttonPossible
Some intercoms have a separate unlock button. If it exists and isn't properly connected, the unlock command doesn't get through.
Evidence: Error codes and network issues for Ring Intercom
- A-5 or C-5 terminal connectionPossible
Ring asks you to check whether the terminal where Ring Intercom's A-5 or C-5 wire goes already holds another intercom wire.
Evidence: Error codes and network issues for Ring Intercom
Virtual technician
Does P16-110 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Error codes and network issues for Ring Intercom
Ring · 2026 · official_doc
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