York Error Code R6: Gas Valve Failure
Warning: This error indicates a problem with the gas valve, which could lead to a dangerous gas leak or explosion. Shut down the furnace immediately and call for professional service.
How to Fix York Code R6
- Step 1: Immediately turn off the furnace at the breaker. This will stop any further attempts to ignite gas.
- Step 2: Shut off the manual gas shutoff valve located near the furnace.
- Step 3: Evacuate the premises. Contact your local gas utility company or a qualified HVAC technician immediately from a safe location. Do not attempt to troubleshoot the issue yourself.
How to Reset York Code R6
- Turn off the furnace power switch, usually located on or near the unit.
- Turn off the circuit breaker for the furnace. Wait 30 seconds.
- Restore power at the breaker and flip the furnace switch back on.
- Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.
What does R6 mean?
The R6 error code on your York furnace indicates a 'Gas Valve Failure'. This means the furnace control board isn't detecting the gas valve opening or closing properly, or that the valve isn't responding to the board's commands. The gas valve is responsible for safely controlling the flow of natural gas to the burners for combustion. If the valve malfunctions, it can either prevent the furnace from heating or, more seriously, cause a dangerous buildup of gas. Because natural gas is both flammable and can cause carbon monoxide poisoning, this is a serious issue that needs immediate attention.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Gas Valve | 024-36378-000 | — |
| Furnace Control Board | S1-33102944001 | — |
| Gas Pressure Switch | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| R1 | Flame Without Call | Critical |
| R2 | Pressure Switch Stuck Closed | Warning |
| R3 | Pressure Switch Stuck Open | Warning |
| R4 | High Limit Switch Open | Warning |
| R5 | Rollout Switch Open | Critical |
| R7 | Ignition Lockout | Critical |
| R9 | Reversed Polarity | Critical |
| A4 | Improper Thermostat Wiring | Warning |
| AF | Low Flame Current | Critical |