Ingersoll Rand Furnace Error Code E2.2

E2.2 means the furnace detected and then lost the burner flame 10 times within a single call for heat, triggering a one-hour lockout. This recycle limit exists to prevent unsafe operation when the combustion system cannot maintain a stable flame. The error points to a problem with gas pressure, the flame sensor, the burner assembly, or the gas valve, all of which need to be inspected before the furnace will run normally again.

Start by measuring the manifold gas pressure with a manometer while the burner is firing: the correct value is approximately 1.7 inches WC for natural gas or 6.0 inches WC for LP. If pressure is correct, inspect and clean the flame sensor rod, check the burner ports for debris, and verify the flue is clear of obstructions. If these steps do not resolve the issue, the gas valve may need to be tested or replaced by a qualified technician.

Repair costs vary depending on the cause. Cleaning the flame sensor or burner is typically a low-cost service call, often in the range of $80 to $200 including labor. Replacing a gas valve is more involved, with parts and labor commonly ranging from $300 to $600 or more depending on the model and local rates. Diagnosing the specific cause first is the most cost-effective approach.

The furnace will automatically attempt to restart after the one-hour lockout period expires, but resetting power does not fix the root cause. If the underlying problem is not corrected, the unit will recycle again and re-enter lockout. A technician should diagnose and repair the cause before relying on the furnace for heating.

Yes, repeated flame loss during a heating cycle can indicate a combustion problem that should not be ignored. The one-hour lockout is a built-in safety response to prevent the furnace from continuing to cycle unsafely. Do not attempt to bypass or repeatedly reset the unit without identifying and correcting the cause, and ensure the area is ventilated if you suspect a gas supply issue.