An ADT heat detector that shows the wrong time or a strange status is part of a system where the panel keeps the clock and the detector only reports events, so a wrong time in the history or in the ADT app points to the panel's time or the app's time zone settings. A heat detector reacts to a fixed high temperature or a quick rise in heat, and it sends a message to the panel when it triggers or when its battery, tamper or supervision status changes.
The checks in more detail
The panel then logs the event with its own time, so a log with the wrong time means the panel's clock is wrong, not the detector. Check the time on the panel's screen or in the ADT app, and the time zone and daylight saving setting in the system's settings. Contact ADT if the panel's clock cannot be changed by you, since some changes are made by the monitoring center. A status of trouble, tamper or low battery on a heat detector is separate.
Read the message on the panel: low battery means replace the battery as ADT says, tamper means the cover or the mounting has been disturbed, and a supervisory trouble means the panel has not heard from the detector recently. Check that the detector is in range, firmly mounted and not blocked by metal or heavy walls. A detector that was moved or dusty may need cleaning with a soft brush. Do not paint over it or cover it.
When a heat detector triggers a real alarm, follow the safety procedure: leave the building and call the emergency services. A test of the detector should follow ADT's instructions and be done with the system in test mode, so that the monitoring center is not dispatched. If the clock stays wrong after a power cut, the panel may need to reconnect to the network to update the time. Replace the battery on schedule. Contact ADT with the system and detector details if the status does not clear or the time cannot be corrected.
Differential
Likely causes of “ADT Heat Detector shows the wrong time, state or sensor reading”, and how to tell them apart
- 1
The panel's clock wrong
What separates it History shows the wrong time
How to confirm Check the panel and the app time zone
- 2
A low battery on the detector
What separates it A low battery trouble message
How to confirm Replace the battery as ADT directs
- 3
A tamper condition
What separates it A tamper message
How to confirm Check the cover and mounting
- 4
A supervision trouble
What separates it The panel has not heard from the detector
How to confirm Check range and mounting
- 5
A power cut
What separates it The clock drifted
How to confirm Let the panel reconnect and update
Before you touch a setting
Record this first — changing settings destroys the evidence
- When the problem began and what changed
- Any message in the app
- Whether other devices at home work
- The model and serial number
Try in this order
0 of 6 completedCheck the panel's time
ReversibleAnd the app time zone.
Read the trouble message
ReversibleOn the panel.
Check the battery
ReversibleAnd the mounting.
Check the detector's range
ReversibleAnd obstructions.
Test only in test mode
ReversibleSo no dispatch occurs.
Contact ADT
ReversibleIf it will not clear.
Model-specific
What is true of this model and not of its siblings
- Panel clock
- It stamps every event.
- Supervision
- The panel checks each sensor.
Stop boundary
When this stops being a self-service repair
- !If the steps do not clear it, contact the maker with the model and serial number
- !Check the warranty before a repair
- !Keep the app and the device firmware updated
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Does the heat detector have a clock?+
No, the panel does.
What does a tamper message mean?+
The cover or mounting was disturbed.
Can I test it?+
In test mode only.
What if it goes off?+
Leave and call emergency services.