So, what's the deal? Well, if you're getting hot water everywhere else in the house but the shower, you most likely have one of these 2 issues: Your anti-scald device is set too high. Your
If your shower is trickling but other faucets work fine, the showerhead might be clogged, valves may not be fully open, or there could be a blockage in the pipes. Cleaning the showerhead with vinegar or ensuring valves are open might help. If it's only the hot water affected, the water heater may have an issue.
There may have been a valve accidentally turned off to the shower and tub. This would be the first thing to check before looking into the shower or tub as being the problem since most bathrooms are supplied with the same water lines that feed the sink, tub and shower.
A shower not working properly can be due to a broken shower valve or valve cartridge. Shower valves, after all, control both the flow and temperature of water in the shower. This is the component of your shower responsible for mixing hot and cold water.
Shower Problem One: Your Anti-Scald Unit Is Set Too High
Anti-scald units are also known as “rotational limit stops” or “hot limit stops.” Most modern faucets have an anti-scald unit for safety. These units limit how far you can rotate your shower's handle to activate hot water.
If you have a temporary dip in water pressure, the build-up of limescale on the shower head could be your culprit. Descaling the shower head can restore the normal speed of flow of water. If that doesn't resolve things, however, you might need a more permanent solution like replacing the shower.
NOTE: Unless both hot and cold water supplies are turned on, the pressure balance valve will allow only a dribble of water to flow through the valve.
Faulty Mixing Valves
If you notice adequate water pressure everywhere in the house except the shower, a mixing valve is likely the problem. It's essential to consult a plumbing expert for a mixing valve replacement.
If you have hot water in other taps but not in your shower, the problem likely lies with the shower itself. The mixing valve may be stuck or blocked, preventing it from mixing hot and cold water properly. Alternatively, the shower's thermostat could be malfunctioning.
If the electric shower does not turn on, you could have an issue with the circuit breaker. If you have reset the circuit breaker on your consumer unit and still have no power supply, check the fuse (usually located in a socket close to the boiler programmer with the word 'Fuse' on the switch and an orange light).
If you don't find any leaks, a blockage in your plumbing pipes could be the cause of your tap troubles. Clogged pipes are usually due to sediment build-up, which stops the flow of water. This build-up may be from limescale, rust, debris or heavy metal deposits.
Water is too hot or too cold
If the thermostatic cartridge is faulty, the water temperature may not match your desired setting. Therefore, you only need to carry out a test by activating the thermostatic mixing valve on both sides to check if the temperature is correct.
Typical Cause
Hot and cold water may not be supplied to the valve, improper use or an obstruction in the spout/showerhead could cause this to happen.
Shower valves don't last forever, and regular use will eventually cause your shower valve to stop working. Valve seals can wear out and cause leaks over time. The valve's bearings can wear down, impacting valve function and causing unexpected temperature changes.
No water coming out of the electric shower
This could be caused by blocked pipes or a blocked shower head, or an issue with a faulty solenoid valve coil. If you can't see any obvious blockages that you can unblock, a plumber should be able to locate the problem and fix it for you.
If you're getting hot water everywhere but your shower, it could be that your anti-scald device is set at too high a limit. Anti-scald devices (also called a “hot limit stop” or “rotational limit stop”) are safety features that most faucets have.
You can tell if your shower valve needs to be replaced when the faucet is shut off but water continues to leak, the water temperature is difficult to control, there are random water temperature changes, or you notice decreases in shower water pressure.
First, if you have metal pipes, pour boiling water down the drain. Then remove hair from the drain. If that doesn't work, use a mixture of vinegar and baking soda. If the clog persists, use a plunger, plumber's snake or chemical drain opener.