The fix here is usually just replacing the faulty part. I am a self-proclaimed neat-freak, mom, and wife, whose passions are baking, creating, photography, travel and of course, family! The possibility of using two spare outputs r and r for various applications. A combi boiler is the most compact, space saving hot water and central heating system available today, which is why it’s also the most popular choice for modern homes. If you have a plumbing or drainage issue and require.