Our Tips for Troubleshooting the Common Issues with Jandy Pool Valves

By Steve George

July 12, 2019House & Garden

The most common type of pool valve used in most of today’s pools is the Jandy (combination) valve. This type of valve isn’t the first of its kind but it was popularized by the company with the same name – Jandy. With its introduction back in the ’80s, this three-way valve took the market by storm despite being a more expensive option than the standard pool valve. All that is due to the fact that plumbing and cleaning it are way easier, however, as with every part, there are still some common issues that it may provoke from time to time. Here’s what you can do about them.

Dirty Spots

If you notice dirty spots starting to appear on the valve, the first thing to do is clean the pool filter, pump basket and skimmer basket(s). Make sure that all auxiliary pool valves are shut off including surface returns, the spa overflow (if any), and waterfall. Try increasing the cleaning time by using the timer knob.


This usually happens when two ports are discharging water and it can be solved in two steps. You will first need to check their alignment and also make sure the sensor plate is adjusted properly. If you have double ported feed lines, check if they are installed on both lines.

Trapped Dirt

Dirt usually gets trapped between heads, which you need to start troubleshooting by checking if they are pointing in the same direction. If that is the case, take a head removal tool if necessary to ratchet the head up and down in order to position the nozzle so it points in the right direction. Increasing the cleaning time and checking if you have a balanced flow is also necessary.

Lower Pressure Than Usual

Similar to the dirty spots, maintaining a normal pressure will require you to start cleaning the pool filter, pump basket, and skimmer basket(s). You will also need to backwash the pool filter, check if all the auxiliary pool valves are closed and if the pool pump is operating normally. Checking the heater bypass or if there is any leaking and worn out o-rings is also important.

Broken Handle

If the handle on the valve brakes, the system will continue working and obviously, you will need to install a new one. In the meantime, you can send someone to buy a new one while you deal with the situation at hand. First, you will need to get rid of the lock nut and pull off the broken handle. Then, you will wrap the diverter stem with a piece of cloth, and turn it gently with some pliers.