Only press the reset button once – You may damage the control panel if you repeatedly press the button – which could lead to an expensive repair. Hold the reset button for 3 seconds before releasing – You should be able to tell if your boiler has been reset properly as it will usually display a flashing green light.
Call a professional
If you have tried to reset the boiler three times, and it still hasn't restarted, then you probably have a fault with the boiler. You should call a gas engineer in to diagnose and repair the underlying fault.
Do not restart it again. It goes into lockout because it is not igniting the oil that is being pumped into the burner. To much oil pooled up in the system with an ignition could result in an explosion.
You should not reset the burner more than two or three times, the reason is you may be pumping some fuel into the heat exchanger that is not igniting.
We know it's no fun waking up to a cold home. But turning it off and then firing it up again in the morning could also mean your boiler needs to work harder – and use more energy. You won't necessarily lose money from doing this each night and morning, but it's unlikely that you'll save money either.
That being said, depending on the type of heating system that you have and how old it is, switching it off for long periods of time could trigger an issue with your central heating. For example, it could cause elements such as the pump or valve to seize up.
If you've attempted to reset your boiler 3 times and it's still not working, then you have a fault with your boiler. In this case you should call a Gas Safe registered engineer to diagnose the problem and make any repairs.
If a furnace isn't receiving enough airflow, it may overheat and trigger the reset button to trip. Make sure to clean or replace the air filters and keep the air vents open enough for proper airflow. Occasionally, the flame sensor rod may be coated with dirt and debris, causing the furnace to shut off.
Leave the breaker(s) off for at least 10 minutes while the system is off and “rebooting.” After 10 minutes have elapsed, go back to the breaker box and flip the HVAC breaker(s) back on.
Sometimes, there has just been a glitch or a false reading, and resetting the boiler will solve the problem and it will be back to normal again. However, if it constantly trips, it's more likely that there's a problem with pressure, temperature or flow, which could mean an issue with the pump or the heat exchanger.
Consult your boiler manual for specific reset instructions for your model. For most models, you will need to press and hold the reset button for about 10 seconds. If the boiler continues to lock out or display fault codes, it's advisable to call a gas-safe registered engineer to investigate further.
Over time, boiler parts can start to deteriorate and rust. This deterioration can prevent water flowing through the boiler properly and causing it to break down. To help prevent this kind of breakdown, you should ensure you have your boiler serviced at least once a year.
Don't be tempted to ignore constant boiler resets. The underlying fault will invariably lead to problems, maybe even boiler breakdown in the future.
Simply put, for a boiler to heat the water efficiently, the pressure has to remain at the ideal level. Low pressure can cause the system to shut down, whilst combi boiler pressure is too high can overwork the system and cause it to fail. For this reason, it's crucial to check pressure levels and keep them regulated.
Average Water Heater Recovery Times
60-70 minutes (for a gas tank water heater). 120 minutes (for an electric tank water heater).
Find the switch mounted on or near the furnace and turn the power off. If you can't find a switch at the furnace you can turn off the circuit breaker to the furnace at the main circuit breaker box. Wait about 10 seconds. Turn the switch or breaker back on and check the furnace to see that it has power again.
If the lights are still illuminated or flashing with the flame sensor wires disconnected, the primary control is defective and should be replaced.
Mind the safety lock. When resetting your furnace, make sure to press the button only once to avoid engaging the safety lock. Reach out to professionals. In most cases, the safest course of action is to contact your go-to HVAC company if your furnace doesn't work after a power outage.
Overheating is the number one cause of reset button trips. If your furnace is cloistered somewhere where there isn't enough airflow, it may become overheated repeatedly, leading to frequent reset button trips. No Fuel.
Usually, a boiler will reset in 2 to 3 minutes. Some boilers have a longer reset sequence, and could take around 5 to 10 minutes to power up. If you're confident that you've fixed the fault and reset your boiler, but it's still not switching on, then contact a professional. They'll help you find and fix the problem.
Sometimes when your boiler is working but your radiators are not heating, the most likely culprit is a malfunctioning boiler pump or central heating controls. If your boiler is running but your radiators are chilly, make sure the thermostat or timer is set appropriately.