Boiler showing a fault and no hot water — next steps
Frequently Asked Questions
My boiler shows a fault light and there’s no hot water — what should I check first?
Start with the basics: confirm the thermostat is calling for heat, the gas supply valve is open, the system pressure sits in the normal range on the gauge, and the boiler has power. Note the fault indicator or code and look it up in your unit’s manual, since codes differ by brand. If a simple reset doesn’t restore heat, call HeatLand at (604) 330-3812.
Is it safe to keep resetting my boiler when it locks out on a fault?
Reset once. If the boiler locks out again, stop — repeated resets can mask a real fault and, on gas units, risk unburnt fuel. If you smell gas or rotten eggs, hear hissing, or feel unwell with headaches or nausea (possible carbon monoxide), leave immediately, avoid switches, and call from outside. Then reach HeatLand’s TSBC-certified team at (604) 330-3812.
What do the different boiler fault categories usually mean?
Faults generally fall into categories: ignition or flame failure, low water pressure, overheat or high-limit lockout, sensor or thermistor faults, and pump or airflow issues. Each brand assigns its own indicators, so always verify the exact meaning against your unit’s manual rather than assuming. Categories point you toward the problem, but a licensed technician confirms the true cause safely and correctly.
Should I call a professional or wait it out if my boiler faults in winter?
In a Metro Vancouver winter, don’t wait — no hot water often signals a fault needing licensed diagnosis, and standing water in pipes risks freezing. If you’ve done one reset and checked pressure and gas without success, book service. HeatLand has been serving the region since 1999, is licensed, insured, and TSBC-certified, and offers emergency service at (604) 330-3812.
Reviewed by the HeatLand Heating & Cooling team — licensed HVAC contractor serving Metro Vancouver & the Fraser Valley since 1999. Rebate programs and product specs change; confirm current details with a written quote and with CleanBC/FortisBC. If you smell gas or your CO alarm sounds, stop, leave, and call a licensed technician or 911.