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HEART sensors.noisy H-08004

Readings noisy. Readings jump around far more than normal.

CodeHEART sensors.noisy; inside a message "code": "sensors.noisy"
H-numberH-08004: area 08, code 004
Areasensors: Readings and calibration
Typical severitywarning. A product may set another for its own case.
Applies toProducts with sensors: thermostats, chargers, pumps, printers, trackers, medical devices

Likely causes

How to fix or prevent it

  1. Check connections and earthing.
  2. Move cables away from power lines and motors, or use shielded cable.
  3. Replace the sensor if the noise stays.

What the HEART does by itself

It raises a warning and may smooth or ignore the noisy readings. It resolves when the readings are steady again.

When to call service

At once for medical devices, where noise can be mistaken for real signals. Otherwise if it stays after checking connections.


Inside a message a code is written bare, "code": "storage.full". In logs, tickets, documents and searches it is written HEART storage.full. Things that simply happen, such as system.started, are event types, not faults. The codes are defined in Part 3, Section 5.4, and their H-numbers in Section 5.7. All of it, as data: fault-codes.json.

All fault codes, by area · All fault codes, by H-number · Problem types (API errors)