Fault codes by H-number

Every standard HEART fault code, by its H-number (H-, two digits for the area, three for the code). Type a number after /system-code/, such as /system-code/H-04002, or a part of one, such as /system-code/H-04, to find it.

H-number	Code	Problem	Area
`H-01001`	`system.main-function-lost`	Main function lost	`system`
`H-01002`	`system.main-function-degraded`	Main function degraded	`system`
`H-01003`	`system.flatline`	No Pulse (flatline)	`system`
`H-01004`	`system.unexpected-restart`	Unexpected restart	`system`
`H-01005`	`system.heart-unwell`	The HEART itself is unwell	`system`
`H-01006`	`system.undo-failed`	A change could not be undone	`system`
`H-02001`	`power.supply-lost`	Main power lost	`power`
`H-02002`	`power.supply-unstable`	Power supply unstable	`power`
`H-02003`	`power.battery-low`	Battery low	`power`
`H-02004`	`power.battery-failing`	Battery failing	`power`
`H-03001`	`connectivity.link-lost`	Network link lost	`connectivity`
`H-03002`	`connectivity.link-unstable`	Network link unstable	`connectivity`
`H-03003`	`connectivity.dependency-unreachable`	A service it relies on cannot be reached	`connectivity`
`H-03004`	`connectivity.clock-unsynced`	Clock not synchronised	`connectivity`
`H-04001`	`storage.nearly-full`	Storage nearly full	`storage`
`H-04002`	`storage.full`	Storage full	`storage`
`H-04003`	`storage.write-failed`	Write failed	`storage`
`H-04004`	`storage.wearing-out`	Storage wearing out	`storage`
`H-04005`	`storage.corrupted`	Storage corrupted	`storage`
`H-05001`	`performance.slow`	Responses slow	`performance`
`H-05002`	`performance.overloaded`	Overloaded	`performance`
`H-05003`	`performance.backlog`	Backlog growing	`performance`
`H-05004`	`performance.memory-exhausted`	Memory exhausted	`performance`
`H-05005`	`performance.too-hot`	Too hot	`performance`
`H-05006`	`performance.overshoot`	Overshoot	`performance`
`H-06001`	`software.error-spike`	Error spike	`software`
`H-06002`	`software.crashed`	Crashed	`software`
`H-06003`	`software.crash-loop`	Crash loop	`software`
`H-06004`	`software.update-failed`	Update failed	`software`
`H-06005`	`software.config-invalid`	Settings invalid	`software`
`H-06006`	`software.version-mismatch`	Version mismatch	`software`
`H-07001`	`ai.provider-unavailable`	AI provider unavailable	`ai`
`H-07002`	`ai.cost-spike`	AI cost spike	`ai`
`H-07003`	`ai.budget-near-limit`	AI budget near its limit	`ai`
`H-07004`	`ai.budget-exceeded`	AI budget used up	`ai`
`H-07005`	`ai.model-drift`	AI model drift	`ai`
`H-07006`	`ai.output-rejected`	AI output rejected	`ai`
`H-07007`	`ai.lease-expired`	Brain lease expired	`ai`
`H-07008`	`ai.brain-revoked`	Brain revoked	`ai`
`H-07009`	`ai.answer-rejected`	Brain answer rejected	`ai`
`H-07010`	`ai.disagreement`	Brain disagrees with the system's checks	`ai`
`H-08001`	`sensors.no-reading`	No reading	`sensors`
`H-08002`	`sensors.out-of-range`	Reading out of range	`sensors`
`H-08003`	`sensors.stuck`	Reading stuck	`sensors`
`H-08004`	`sensors.noisy`	Readings noisy	`sensors`
`H-08005`	`sensors.drift`	Sensor drift	`sensors`
`H-08006`	`sensors.disagree`	Sensors disagree	`sensors`
`H-09001`	`actuators.not-responding`	Actuator not responding	`actuators`
`H-09002`	`actuators.position-mismatch`	Position mismatch	`actuators`
`H-09003`	`actuators.stalled`	Actuator stalled	`actuators`
`H-09004`	`actuators.short-cycling`	Short-cycling	`actuators`
`H-09005`	`actuators.overcurrent`	Overcurrent	`actuators`
`H-10001`	`data.invalid`	Data invalid	`data`
`H-10002`	`data.missing`	Data missing	`data`
`H-10003`	`data.out-of-sync`	Data out of sync	`data`
`H-10004`	`data.backup-failed`	Backup failed	`data`
`H-10005`	`data.integrity-failed`	Data integrity check failed	`data`
`H-11001`	`security.login-failures`	Many failed logins	`security`
`H-11002`	`security.unexpected-access`	Unexpected access	`security`
`H-11003`	`security.certificate-expiring`	Certificate expiring	`security`
`H-11004`	`security.certificate-expired`	Certificate expired	`security`
`H-11005`	`security.tamper-detected`	Tampering detected	`security`
`H-11006`	`security.policy-violation`	Policy violation	`security`
`H-11007`	`security.anomaly`	Security anomaly	`security`

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)