As vital as they are, dishwashers are often vulnerable to malfunctions, leaks, and other plumbing issues. This article will look at 3 common dishwasher problems and possible fixes.
No water entering the machine
If you encounter this problem, chances are that the water-inlet valve that lets water into the machine is defective. The water-inlet valve is usually located behind the lower access panel, and should be replaced to solve the problem.
In other cases, a defective float switch could be the problem. This is a plastic cylinder that floats up as water fills the dishwasher, letting water in. If the float switch gets trapped by debris in the raised position, water inflow is blocked, and a plumber may need to come in to dislodge the floating cylinder or replace it of worn out.
Water doesn't drain from the machine
A dishwasher that won't drain can be problematic. In many cases, the problem is caused by a clog in the dishwasher drain line, usually where the pipe attaches to the garbage disposal. Call in a plumber to clear any debris from the hose connection to allow water to flow freely to the household drain line.
If the problem is not in the drain line, have the pump checked for defects. The pump is responsible for ejecting water from the machine, and can be located at the bottom of the machine right beneath the lower rack and spray arm support. The two major components of the pump that could have failed are the wash impeller, which is typically a round plastic fan blade-type of device that spins around and forces water though the spray arm, or the drain impeller which is similar in shape and responsible for pushing water via the drain port.
Both these components can be clogged by food debris, toothpicks and fragments of glass from your dirty dishes, causing them to fail. Your plumber can examine both components for defects and unclog or replace them if necessary.
A noisy dishwasher
If there is a rumbling noise coming from your dishwasher, chances are that you have a worn out water-inlet valve. A damaged valve will often shudder on and off irregularly, causing the incoming water lines to vibrate violently, causing a rattle or rumble. If you experience such noises, call in your plumber to replace the inlet valve.
Noise that comes from the bottom of your dishwasher may indicate a faulty motor. Motor noises often occur when the motor bearings are poorly lubricated, causing a loud rattling around the shaft while the motor is running. Having the bearings greased can solve the problem, but it is important that all broken spin seals that protect the bearings from getting wet are replaced so that the problem does not recur.
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