L
luis50Aug 4, 2025
Why does my Patterson-Kelley MACH Boiler show error E12 due to low gas pressure?
- LLindsay DillonAug 4, 2025
If your Patterson-Kelley Boiler experiences low gas pressure because a gas-supply shut-off valve was closed, the E 12 error will appear on the display panel, locking out the boiler. To resolve this, manually reset the low gas pressure switch and then press the front panel reset button once the gas pressure is restored.