How to Start a Vaillant Boiler: Easy Step-by-Step Guide
Starting your Vaillant boiler for the first time or after it’s been installed might seem a bit tricky. But don’t worry! This guide will show you each step in a simple way so you can get your boiler running quickly and safely.
Table of contents
Step-by-Step Instructions to start vaillant boiler
Time needed: 6 minutes
Follow the below steps to start the vaillant boiler:
- Get to Know Your Boiler
Before you press any buttons, take a minute to look at your boiler. Find the control panel, thermostat, and pressure gauge. Knowing where everything is will help you in the next steps.
- Check the Water Pressure
Your boiler needs the right water pressure to work properly. Look at the pressure gauge on the front. It should be between 1 and 1.5 bar. If the pressure is too low, check your user manual to see how to add water to the system safely.
- Turn On the Boiler
When the pressure looks good, find the main power switch on your boiler and turn it on. Wait a few moments for it to start. You might hear a soft noise as it powers up this is normal.
- Set the Thermostat
Now that the boiler is on, set the room temperature you want. Find your thermostat (on the wall or part of the boiler), choose your desired temperature, and wait a few minutes for the boiler to start heating water and sending it through your home.
- Watch the Boiler Start Up
As the boiler runs, check for error messages or flashing warning lights. Listen for strange or loud noises. If you notice anything unusual, look in your manual or call a qualified technician.
- Test Your Heating and Hot Water
Now check that everything works. Turn on a hot water tap to see if hot water is coming through. Turn on your heating and check if radiators are getting warm. If not, use your manual’s troubleshooting section or get professional help.
When to Call a Gas Safe Engineer
You should contact a Gas Safe registered engineer if the boiler shows a fault code or flashing lights you don’t understand, you hear loud banging, whistling, or other strange noises, you smell gas – leave your home immediately and call the gas emergency line, you see leaking water from the boiler, or you feel unsure about anything during setup or operation. Never try to repair a gas boiler yourself. Only trained and certified engineers should do that.
All Set!
Great job! You’ve started your Vaillant boiler. To keep it running well, check the pressure and settings regularly and book a professional service once a year. With good care, your Vaillant boiler will keep your home warm and your water hot all year round.
Frequently Asked Questions
Ensure the electrical supply to the boiler is turned on. This may be from a switched socket, or a fused spur located near the boiler. This switch should be left ON continuously to operate the boiler. Turn the boiler ON by turning the ON/OFF control (5) from the ‘0’ position to the ‘I’ position.
As well as using the controls on your boiler, you can also use the timer device that is likely located near the boiler. You’ll probably see a circular dial set against a larger square box or a timer which will be built in. The box itself will have an on and off switch and this should be set to ‘On’.
Find your reset button and push it for 10 seconds. Wait 2 to 3 minutes, then turn on the heating or hot water. The boiler should fire up. Repeat this twice if your first try doesn’t work.
