How To Repair Leaking Pool Solar Panels?

Because properly fitted solar panels should never cause a roof to leak, the problem is usually due to poor installation or workmanship. The leak can usually be rectified in both circumstances, but it may be more involved than, say, correcting a wiring issue.

Is it true that solar panels leak water?

In colder climates, heat transfer fluid is employed, whereas circulating water is used largely in warmer climates and for pools. Leaks can occur in both types of fluid-filled solar panels.

How do you clean solar panels for a pool?

Solar panels are prone to collecting dust and debris over time, so get a brush and brush away any loose dirt before getting any water involved. This will allow you to hose off your solar panels and get them gleaming clean.

Why isn’t my solar pool heater working?

In my pool, I’m getting a lot of bubbles:

When a solar system first turns on in the morning, large bubbles should appear in your pool. The air is being pushed out of the solar collectors by water. Every day, at the end of the filtration cycle, water should drain back into your pool.

I see little bubbles in my pool whenever the solar system is turned on:

This is the first indication of a flow issue. The vacuum relief valve in the solar pool collectors’ upper corner is drawing air. Normally, this is due to a lack of sufficient pressure to close the valve. Check to see if your filter needs to be cleaned first. This is the root of the problem in 80% of cases. If this does not resolve the issue, your VR valve may need to be replaced. It’s also possible that your pump isn’t pumping enough water. Check the pump’s variable speed. It’s possible that you’ll need a new pump.

My pool isn’t getting warm:

Check to see if your solar system is turned on. When the pool care technician hits the toggle switch on the solar valve to turn it off, he or she may forget to turn it back on. The weather must be conducive to solar heating. It’s possible that your control system will need to be serviced. A control sensor that has failed and needs to be replaced is not unusual. If there is a power outage and you have a time clock, the solar system will not heat if the filtering cycle is in the evening.

My roof has a hole in it:

It’s usually a hose clamp that needs tightening or an O ring that needs replacing. It might potentially be a hole in the solar collector, which would necessitate the use of a splicer or a plug. It will spit water if the VR valve does not close. It’s possible that the VR valve has to be replaced.

When the solar system is turned off, I can hear water running up to it:

On every system, there are two check valves. On the return side, the check valve isn’t working properly. It needs to be serviced or replaced.

Because the plumbing has a high point in its construction, the solar system does not drain automatically.

Every year, before the winter weather sets in, this system must be manually drained. Otherwise, freeze damage will result.

In my pool, there is a white powder:

After the filter is installed, the check valve must be serviced or replaced. When the solar system drains after the pump is off each day, this valve prevents water from back flushing the filter. DE, a medium in your filter that absorbs debris, is the white power.

After the winter, the solar panels are leaking, and I have some black material in my pool:

This could be due to a variety of factors. If you have a DE filter rather than a cartridge filter, there’s a good chance you have DE in your solar collectors. Before backwashing the filter, turn off your solar system to avoid DE and debris from entering the system. DE can adhere to solar tubing and absorb carbon from collector tubes. After that, the water is dumped into the pool. If a solar system has been exposed to freezing for several years and is not emptied for the winter, the tubing can begin to break down and release carbon into the pool. It will be necessary to flush the system. When the collectors crack as a result of a freeze, they must frequently be changed.

During a windstorm, I hear beating on my roof:

The solar collectors are mounted to the roof and will almost certainly need to be repaired where they meet the roof. We recommend having the entire system, including roof attachments, serviced every 5-8 years.

Why is water flowing from my overflow pipe?

One of the most typical causes of an overflow pipe dripping or running with water is a float valve malfunction. Toilet cisterns, cold water tanks, and central heating feed and expansion tanks all use float valves. It’s a water-level-controlling gadget that comprises of a metal or plastic arm with a floatable plastic ball at the end.

When the water in the tank is utilized, the level of the water in the tank drops, as does the level of the ball and arm. This action activates the cold-water feed, allowing the tank to replenish. When the water level in the tank reaches a certain level, the ball rises to turn off the water feed.

The water level in the tank should be about an inch below the overflow pipe at its highest point. The cold-water feed may not entirely turn off if the float valve isn’t working properly, causing the water level to increase above the overflow.

If you’re not sure if the leak is coming from an overflow pipe, we have a helpful article on how to diagnose leaking pipes that can help you locate the source of the problem quickly and efficiently.

If you notice water leaking from an overflow pipe, do the following steps:

1. Determine which of the water tanks or cisterns has overflowed.

If the leaky pipe is on the ground or first floor, it’s most likely your bathroom overflow pipe, which is connected to the toilet cistern. It could, however, be coming from your cold-water or central heating feed and expansion tank if it’s at loft level and protrudes from the eaves of the roof.

If you’re still not sure, check the water level in each of these locations. You’ve located the culprit if it’s close to the overflow or higher than the ring of limescale that shows its normal level.

It may take hours for your cistern or tank to fill over the overflow level if only a tiny amount of water is dripping into it. During the day, normal water usage may keep the level low enough to hide the leak, so you may only notice it in the morning.

2. Make sure the float valve is in good working order.

The float valve may get stuck down if water is continuously flowing into the tank. Lift it up to release it and make sure nothing is obstructing its movement. Check that the plastic ball isn’t punctured and filled with water if it’s moving normally. It will need to be changed if this is the case. If nothing of these issues are present and the water continues to run, the washer may be worn and should be replaced.

3. Disconnect the water supply and drain the water.

If you’ve determined that your float valve is malfunctioning, you’ll need to replace it or replace the washer as described above. To begin, turn off the water supply to the tank and drain it so that you can work.

  • Use the isolation valve to shut off the water supply to a toilet cistern. The water pipe that leads into the cistern has a valve on it.
  • Turn the screw a quarter turn clockwise with a flat head screwdriver. To empty the water, flush the toilet.
  • Turn off the mains water at the stopcock to stop the water from flowing into either of the water tanks.
  • Turn on the bathroom faucets to drain it.
  • Drain just enough water to keep the water level below the area you’re working on.

Toilet overflow pipe leaking

The toilet overflow pipe connects the cistern of your toilet to the outside of your home. It will normally be constructed of plastic, copper, or lead, and will exit through the wall just behind the toilet.

The water supply into the cistern isn’t turning off, which is why your toilet overflow pipe is leaking outside. There are a few options for resolving this:

  • Check to see whether the float valve is jammed (as described in step 2 above). It could potentially be tangled in the chain that opens the flapper valve during flushing.
  • Make adjustments to the float’s position. The height at which the ball must be fixed to turn off the water supply may be too high. If the arm is metal, try bending it down to lower the ball height. You’ll discover an adjustment screw at the top of the arm if it’s made of plastic. Turn it slightly to adjust the float’s location.
  • Check the pressure of the water supply. Because the pressure of the water entering the tank is too high, the overflow pipe may be leaking. To reduce the flow of water, use the isolation valve (see step 3 above).
  • In the float valve, replace the washer. If the water feed does not entirely shut off when the cistern is full, try replacing the washer. First, turn off the water and drain the cistern (as described in step 3 above). Remove the old washer and disassemble the float valve. When you buy the new washer, take the old one to a DIY store to make sure you obtain the proper size. Replacing the washer and reinstalling the float valve
  • The float valve should be replaced. If the float valve is damaged or the plastic ball has a puncture, it must be replaced. Turn off the water supply and drain the cistern once again (as described in step 3 above). When replacing the float valve, remove it and take it to a DIY store to guarantee you receive the proper size. After that, put in the new one.

Cold water feed and expansion tank overflow pipe

From your loft’s huge water tank to the outside of your house, the cold water feed and expansion tank overflow pipe goes. It’ll be made of plastic, copper, or lead, and it’ll normally go through the eaves and soffits. The tank provides water to your bath and basin faucets, as well as your hot water cylinder.

There are two possible explanations for a leaky cold water feed and expansion tank overflow pipe:

1. The water supply to the tank does not shut off.

Examine the inside of the tank. Check to see whether the float valve isn’t jammed if water is constantly running or dripping from the water feed (as described in step 2 above). If necessary, adjust the float’s position, replace the float valve’s washer, or replace the entire float valve.

2. Water is recirculated through the exit pipes.

Excess water can only be going back up via the outlet pipes if your float valve is working properly and the cold water feed to the tank switches off when it should (the pipes that feed water into your taps and water cylinder).

A defective mixer shower or tap that is plumbed into the mains water supply is the source of this problem. The high-pressure cold mains water forces the low-pressure hot water back up the pipes into the cold water tank when you use the mixer, causing the tank to overfill. You may notice that the overflow pipe only leaks when you use the broken tap or shower if this is the case.

It’s advisable to call in a professional plumber to diagnose and repair this issue.

Overflow from central heating feed and expansion tank

From the little water tank in your loft to the outside of your house, the central heating feed and expansion tank overflow pipe goes. It’ll be made of plastic, copper, or lead, and it’ll normally go through the eaves and soffits. When water is heated, the tank provides your heating system and allows it to expand safely within the system.

There are two main explanations for a leaky central heating feed and expansion tank overflow pipe:

Can you observe water constantly running or pouring from the water supply when you look inside the tank? If this is the case, check to see if the float valve is stuck or if the location of the float valve needs to be adjusted. It’s also possible that the washer or the entire float valve has to be replaced.

2. Your hot water cylinder is malfunctioning.

The only other possibility is a fault with your hot water cylinder if your float valve is in good working order and the cold water flow to the tank switches off when it should. To learn more, go to the next section.

Overflow from a copper cylinder

A copper cylinder’s overflow (also known as the expansion/vent line) drains into your loft’s cold water feed and expansion tank. When the water in the cylinder is heated, this pipe permits it to expand.

Your copper cylinder could be causing an overflow pipe to leak for one of two reasons:

1. Your thermostat is set to an excessively high setting.

When your water is heating, it’s typical for the overflow line on a copper cylinder to drip. However, if it’s filling up with water and causing your tank to overflow, your water may be too hot. Simply lower the temperature on your thermostat to solve the problem.

2. The inside of the copper cylinder has a perforated coil.

A coil is located inside the copper cylinder and is supplied with hot water from the boiler. Cold water from the cold water storage tank is used to fill the rest of the copper cylinder.

When a perforation in the coil occurs, the water inside spills into the main cylinder, causing an overflow problem. Domestic water (which supplies your cold taps and toilets) and central heating water (which supplies your hot taps, boiler, and radiators) mix when this happens.

The water level in the cold water feed and expansion tank and the central heating feed and expansion tank is equalized by gravity. Because the water level in the central heating tank is lower to begin with, it is usually this tank that fills above its normal level and overflows.

The copper cylinder must be replaced as the only remedy to this problem. It’s advisable to hire a professional plumber to complete the job for you.

Boiler overflow pipe

A pressure relief valve, similar to an overflow pipe, is seen in combination boilers. If the system builds up too much pressure, this valve discharges water. The copper pipe connects the boiler to the outside of your home. If there is an issue, it will just emit water.

Make sure you don’t mix up the pressure release valve and the condensate pipe. The condensate pipe is made of plastic and is meant to drip when your central heating or hot water is turned on. Because the condensate line is occasionally run inside into a waste pipe, you may only see one pipe outwardly.

Water may spill from your boiler’s overflow line if:

  • Due to the expansion vessel failing or losing its charge, the boiler has built up too much pressure.
  • The pressure release valve is not properly fitted, allowing water to pass through.

It’s preferable to get a Gas Safe registered engineer to come out and address this problem for you for safety concerns.

Follow these seven actions to prevent your boiler from potential problems and help avoid a boiler breakdown.

Sink overflow pipe

The overflow on a sink is a little aperture just below the rim on the rear of the sink. It’s attached to a pipe that leads to the drain. These overflows can be found in bathroom sinks, baths, and kitchen sinks, and they help prevent your sink from overflowing if you leave the tap running while the plug is in.

Unlike other overflows, when the overflow pipe dripping outside the house indicates a problem, an overflowing sink will reveal the issue in the sink rather than the overflow pipe.

To drain an overflowing sink, simply remove the plug and let the basin to drain.

Is it necessary to clean solar panels on a regular basis?

The topic of solar panel cleaning is a touchy subject among solar panel owners. Some would argue that it is absolutely important, while others will argue that rain will just wash away any issues the panels may have.

The answer is somewhere in the middle of the spectrum. You don’t have to clean your solar panels, but if you don’t, you’ll lose some efficiency. Rain will undoubtedly wash away some of the contaminants that have accumulated on the panels, but it will not be as effective as a physical clean.

In general, the accumulation of dust, dirt, pollen, and debris on solar panels has the potential to reduce the efficiency of a solar panel by about 5%. This isn’t a significant difference, but it can mount up depending on the size of your solar power system. This effect can be amplified if you live in a location where it rarely rains or where the air is very dusty and unclean.

In the end, your panels may require a thorough cleaning from time to time. So, if you want your panels to endure a long time and run at maximum efficiency, you need clean them. This is how you do it:


The cost of purchasing a solar system is relatively expensive at first. Solar panels, inverters, batteries, wiring, and installation are all included in this cost. Nonetheless, because solar technology is continually improving, it’s realistic to predict that prices will continue to fall in the future.


Although solar energy can be collected during overcast and rainy days, the solar system’s efficiency is reduced. Solar panels must be exposed to sunlight in order to collect solar energy. As a result, a couple of overcast, rainy days can have a significant impact on the energy system. It’s also important to remember that solar energy cannot be collected at night.

Thermodynamic panels, on the other hand, are an option to consider if you need your water heating solution to work at night or during the winter.

Check out our video for a breakdown of how effective solar panels are in the winter:

What is the best way to clean a solar hot water system?

You can clean your panels yourself if they are easily accessible. It’s not difficult; a good hosing off will typically suffice, but you can also use a soft cloth, a soft-bristled brush, or a broom, along with some warm soapy water or a glass cleaning agent if they’re extremely dirty.

Leaves and debris

Tube that has been evacuated If there are trees nearby, leaves and sticks will often become lodged between and underneath solar collectors, and while the collectors themselves will not grow hot enough to ignite, the presence of leaves and other debris on your solar collectors could be a fire hazard. If you have safe access to your solar collectors, make sure they are clean of such debris.