Rheem Error F005: No flame detected during operation
The control detected no flame while the boiler was running (flame lost during operation). The burner is shut down for safety, interrupting heat or hot water. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The control detected no flame while the boiler was running (flame lost during operation). The burner is shut down for safety, interrupting heat or hot water.
Rheem 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 Rheem error F005
- Blocked condensate drain causing the burner to flood/extinguish
- Blocked or restricted vent or combustion-air piping
- Low or fluctuating gas inlet pressure
- Dirty or weak flame sensor / ignition electrode
- Poor grounding or loose igniter connection
What you can safely check
- Check that the boiler's condensate drain line and the outside vent terminal are clear of obstructions, ice or debris
- Confirm gas is on to other appliances
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 F005 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 Rheem repair.
Parts Are Professionally Installed — Not Sold for DIY
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 Rheem error F005
Genuine Rheem parts we supply and professionally install — never for DIY.
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Every repair and installation is backed by our written workmanship guarantee. If a part we installed fails because of our work, we make it right.
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We fit only manufacturer-original (OEM) components so your boiler performs to spec and keeps its factory warranty intact.
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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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Backed by the full HVAC resources of CanroHeat.ca and four decades of service in Greater Vancouver since 1985.
Rheem Error F005 Repair Across Metro Vancouver
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Frequently Asked Questions
Fix Rheem Error F005 Today
Licensed Rheem diagnosis and repair with genuine parts — same-day and after-hours across Greater Vancouver.
A Division of CanroHeat.ca · Licensed Gas Fitters · Serving Greater Vancouver since 1985