Peerless Error A02: Flame Failure / Flame Loss Lockout
Locking (manual-reset) lockout after three consecutive flame failures during one heat demand — the burner lit but flame was lost or could not be sensed reliably. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
Locking (manual-reset) lockout after three consecutive flame failures during one heat demand — the burner lit but flame was lost or could not be sensed reliably.
Peerless 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 Peerless error A02
- Dirty, corroded, or failing flame sensor giving a low signal (below ~2.8 microamps)
- Burner fibers protruding toward the sensor, distorting the flame signal
- Low or fluctuating gas pressure at the gas valve inlet during operation
- Loose flame-sensor wiring harness not fully seated at the control
- Gas valve not maintaining steady gas delivery
What you can safely check
- Confirm the gas shutoff valve to the boiler is fully open
- Press reset once and watch whether the flame holds after lighting
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.
Error A02 usually leaves you without heat or hot water and can indicate a safety-related fault. Don't keep resetting it — call for priority after-hours Peerless repair.
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Parts often behind Peerless error A02
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Peerless Error A02 Repair Across Metro Vancouver
Related Peerless Ignition & Flame Codes
Frequently Asked Questions
Fix Peerless Error A02 Today
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