A solar water heater is an eco-friendly and convenient option, especially in Hawaii's sunny climate. Just like any appliance, it can occasionally develop problems that keep it from working effectively. Here's what you need to know about the most common issues with solar water heaters.

Solar Water Heater Problems & How to Fix Them

1. Noise

It's normal for your water heater's pump to make a humming noise. If it suddenly becomes louder, it may indicate the pump is working harder than usual and needs a tune-up. Loud banging, thumping, or clanging noises indicate that the water in the system is boiling. You can adjust your controller settings to keep the tank cooler.

2. Lack of Hot Water

Dirty solar panels can affect the efficiency of your system so that it doesn't produce enough heat. You may also have heat escaping from the tank, which you can solve with more insulation.

If the issue is low hot water pressure, look for blocked pipes or leaks that are limiting the flow. The most common source of leaks is a faulty pressure relief valve, which will need to be replaced.

3. Pump Problems

Your solar water heater relies on the circulating pump to keep water moving and control the temperature in your tank. If it's constantly running or never turns on at all, you might have a problem with the electronic controller that regulates the pump. Another reason the pump isn’t running is if it’s clogged with sediment or debris, so you might need to clean it out after checking the controls. If the pump is running and no hot water is coming through, there’s likely air trapped in the pump.

When you've identified a problem with your solar water heater, contact Solar Help Hawaii in Honolulu for repairs. This local business serves the island of Oahu with alternative energy solutions, including the installation and maintenance of solar attic fans, pool pumps, and split system air conditioners. To ensure your satisfaction with their products, they offer a five-year warranty on their workmanship in addition to the manufacturer's warranty. Call (808) 548-4357 to discuss your options, or send a message online to schedule service.