SearchAsk us anythingarrow rightWhat causes a reversing valve to fail?There are three things that can cause a reversing valve to malfunction. The coil isn't working. The valve is leaking.Let's Get It Fixed!Our virtual experts can diagnose your issue (for free!) and resolve simple problems.Chat with a live expertChat nowCall 1 (855) 466-3948Call nowRATESHARECopy linkTwitterFacebookmagnifying glassLink copied to clipboard.SUBMIT AN ANSWERShop Recommended ProductsShop HomeX Recommended ProductsRELATED QUESTIONSWhat is non return isolating valve?The non return and isolating valve has two functions. If the upstream pressure is greater than the supply pressure, the isolating function is used and the jumper valve is not used.What causes a gas valve to go bad?There are a number of reasons this valve may stop working. The valve may have worn out or been damaged by basement seepage. A glitch in the safety circuit or one of the electronic gas ignition components may be to blame.What happens when a proportioning valve goes bad?The rear wheels locking up when the brakes are applied is a symptom of the proportioning valve going bad. On wet surfaces, the wheels lock up more easily. When gently applied, the rear brakes may feel touchy.What causes bent intake valves?Timing chain/belt breakage and incorrect fitting of new belts and chains caused the valves to contact the top of a Piston. Is this true? The valves above are bent because of a broken timing belt.What happens when valves are out of adjustment?Normally loose valves occur due to normal wear between the components. A clatter from the valve area indicating loose valves is the most common way out-of-adjustment valves are known.Why does a check valve fail?In the case of a check valve, a component failure can cause it to not perform its function, which is to prevent reverse flow. Failure of components in the line could cause failure of other valves or equipment in the line.