Ruud U96VA0702317MSA Error Code 99: Remote Faults Reset Performed
What Does Code 99 Mean?
Code 99 on the Ruud U96VA0702317MSA is an informational notification, not a fault. It is recorded in the fault buffer to mark that the stored history of previous fault codes was intentionally cleared. This is a routine action, usually done by an HVAC technician after a service visit or automatically by a communicating thermostat.
The Integrated Furnace Control keeps a fault-history log so technicians can review what has happened over the furnace's life. When that log is reset, code 99 is stored as a marker of when the reset occurred. On the dual seven-segment display it flashes in the standard pattern (on for one second, off for half a second) at least twice so it is properly logged.
Nothing is wrong when code 99 appears, and it has no effect on operation. Normal heating, cooling, and fan operation continue exactly as before, so no action is required.
What You'll Notice
- Code 99 appears in the fault log as a normal record that the fault history was cleared
- The furnace continues to heat, cool, and run the fan normally with no change in operation
How This Is Diagnosed
There is nothing to diagnose for code 99. A technician simply recognizes it in the fault buffer as a marker that the fault history was reset — typically by a service action or a communicating thermostat — and confirms no active fault is present alongside it.
- No service is needed for code 99 on its own — it only records that the fault history was cleared and does not indicate any malfunction
- If an active fault code appears alongside it, address that specific code rather than the 99 notification
Frequently Asked Questions
Do I need to do anything about code 99?
No — code 99 simply records that the stored fault history was cleared by a technician or communicating thermostat, and it does not affect how the furnace operates.
Does code 99 mean my previous problem is fixed?
Not necessarily; it only means the fault log was reset. If a real problem still exists, its own fault code will reappear, so watch for any active code after the reset.
✓ Verified against manufacturer service manual — March 2026