Laars Error 16: Operating Temperature Too High
The operating temperature sensor read water hotter than 203F (95C). The boiler shuts down to protect itself, often due to poor water circulation. We diagnose and repair it across Greater Vancouver — same-day and after-hours.
The operating temperature sensor read water hotter than 203F (95C). The boiler shuts down to protect itself, often due to poor water circulation.
Laars 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 Laars error 16
- Restricted or blocked central-heating inlet piping
- Circulator pump not running or air-bound
- Closed isolation or zone valves
- Faulty operating temperature sensor
- Incorrect Max Fire dip-switch setting
What you can safely check
- Check the system pressure gauge reads in the normal range (about 12-15 psi cold)
- Make sure all radiator/zone shutoff valves are open, then allow the unit to cool and reset
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 16 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 Laars repair.
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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 Laars error 16
Genuine Laars parts we supply and professionally install — never for DIY.
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Genuine OEM Parts
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.
Laars Error 16 Repair Across Metro Vancouver
Related Laars Safety & Overheat Codes
Frequently Asked Questions
Fix Laars Error 16 Today
Licensed Laars diagnosis and repair with genuine parts — same-day and after-hours across Greater Vancouver.
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