What does Ruud code 10 mean?
Ruud furnace code 10 means the furnace entered a one-hour lockout after repeated ignition failures on the supported control family. Confirm the model number and diagnostic chart inside the furnace door before replacing parts.
What causes Ruud code 10?
- No gas reaching the burners
- A failed hot-surface igniter
- A dirty or weak flame sensor
Can I troubleshoot Ruud code 10?
- Confirm the thermostat is calling for heat and the gas shutoff has not been moved.
- Turn furnace power off for five minutes, restore it once, and note whether the same code returns.
How much does Ruud code 10 cost to fix?
A furnace ignitor replacement typically costs between $150 and $750 nationally.
When should I call a technician?
Call a licensed technician if ignition fails again after one reset or if you smell gas.
Sources and model scope
Fault codes vary by model and control board. Confirm the diagnostic chart inside your furnace panel or the official manual before acting.
Scope used here: Rheem/Ruud RGFG-family controls using the documented two-digit diagnostic table.
- Rheem Manufacturing Company: RGFG Series Gas Furnace Installation Instructions and Diagnostic Codes
92-24161-104-06 · Rheem/Ruud RGFG-family furnace controls; confirm the unit model and its door chart before applying a code meaning.
Compiled by Warmlo Editorial · Reviewed August 2026
This is general information, not professional advice. Gas, electrical, and combustion repairs can be dangerous — when in doubt, call a licensed technician.