Leaking radiator or pipes
- 1. Leaking radiator
If the body of the radiator is leaking, this is generally a symptom of internal corrosion and unfortunately means that it will have to be replaced. At the same time the system will need to be flushed out to remove the particles that caused leak.
- 2. Leaking pipe joint
If the leak is at the radiator valve joint, gently tightening it may be all that is necessary.
If it is the valve that is leaking, or a soldered pipe joint then this would require an engineer visit.
- 3. Leaking pipes
- If the leak is at a joint, tightening a little with a spanner might solve the problem.
- If the leak is at a soldered joint, it will need to be treated by an engineers visit.
- If the pipe is leaking, the pipe will need be replaced by an engineer.
- 4. If you have misplaced or lost your user manual, you can locate a replacement manual from this list of Vaillant boilers (please have your model number to hand).
- We update the maintenance tips and troubleshooting guidance from time to time and aim to make it as helpful as possible. The purpose of the maintenance and troubleshooting section of this website is to provide you with general guidance. Please ensure you read and follow our instructions carefully and do not undertake the maintenance or troubleshooting unless you are aged 18 or over, are competent to do so and are confident that you can complete the maintenance. If in doubt do not attempt any actions and where an appliance is gas fuelled refer to a Gas Safe engineer for assistance.
This website is not intended to be a substitute for professional advice and does not:
- cover every reason that your product could fail;
- cover all of the maintenance that can be undertaken for your product;
- supersede any advice in your instruction manual or from your product manufacturer.
Do not carry out any maintenance or use the troubleshooting guide if it puts you or anyone else in danger or if you believe it may cause damage to your, or another person’s property.