Ruud U96VA0702317MSA Error Code 99: Remote Faults Reset Performed
What Does Code 99 Mean?
A code 99 on the Ruud U96VA0702317MSA is an informational notification, not a fault or error. It appears in the fault code log to record that a fault buffer reset was performed — the stored history of previous fault codes has been cleared. This is a routine maintenance action typically done by an HVAC technician during a service visit, or automatically by a connected communicating thermostat.
The IFC maintains a fault history log that stores fault codes from past events, allowing technicians to review what problems have occurred over the lifetime of the furnace. When the log is cleared, code 99 is recorded as a timestamp marker indicating when the history was intentionally reset. The display flashes code 99 on and off in the standard display pattern (on for one second, off for half a second) at least twice to ensure it is logged.
No action is needed when code 99 appears. It does not indicate any problem with the furnace and has no effect on operation. Normal heating, cooling, and fan operation continues before and after this notification.
- No professional service is needed for code 99 — this is a notification that the fault history was cleared and does not indicate any furnace malfunction or safety concern
✓ Verified against manufacturer service manual — March 2026