John Wood Error Error 1: Open Earth Ground Circuit
The self-diagnostic test detected an open earth-ground circuit to the ignition system. The control requires a verified earth ground to safely sense flame; without it the unit will not run. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The self-diagnostic test detected an open earth-ground circuit to the ignition system. The control requires a verified earth ground to safely sense flame; without it the unit will not run.
John Wood fault codes can vary by model and series. Use this as a guide — the same code can have more than one cause. Our Technical Safety BC–licensed technicians read the code, confirm it against your unit's manual, and diagnose the true cause before any repair.
Likely causes of John Wood error Error 1
- Missing or disconnected ground conductor at the water heater
- Open/loose ground at the fuse box or breaker panel
- Corroded or broken grounding connection
- Wiring fault in the ground path
What you can safely check
- Confirm the unit is plugged into a properly grounded outlet
- Check the breaker for the water heater is on
Beyond these checks, do not open the unit or touch gas/electrical parts — BC law requires a licensed gas fitter. Call us for a proper diagnosis.
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For your safety and to keep your manufacturer warranty valid, BoilerPart.ca does not sell loose boiler parts over the counter or for self-installation. Under BC regulations, gas appliance components must be installed by a licensed gas fitter. Every part we source is genuine OEM and is professionally fitted, tested, and certified by our Technical Safety BC–licensed technicians as part of a complete repair or installation.
Parts often behind John Wood error Error 1
Genuine John Wood parts we supply and professionally install — never for DIY.
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All work is completed by Technical Safety BC–licensed gas fitters (Licence LGA0043870, Boiler Permit LBP0046450). We are fully licensed, bonded and insured for your protection.
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John Wood Error Error 1 Repair Across Metro Vancouver
Frequently Asked Questions
Fix John Wood Error Error 1 Today
Licensed John Wood diagnosis and repair with genuine parts — same-day and after-hours across Greater Vancouver.
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