Bosch Dishwasher: Check Water Light – What Does It Mean?

Bosch dishwashers are an affordable and time-saving investment to clean your dirty dishes. Dishwashers were a few years back a privilege for a select few. Today, anybody with some space can own the Bosch dishwasher.

It is frustrating finding your dishwasher not working and your dishes still greasy. As the dishes pile up, you try to decode the Bosch check water light signal from the dishwasher. Bosch dishwashers are fitted with a self-diagnosis system. If there are changes in its operations, it lights up. The tap icon is one of the indicators.

The tap lighting up could indicate:

  • Bent water inlet hose
  • Tap is turned off
  • Clogged inlet filter
  • Filters in the unit are blocked
  • The drain pipe is blocked
  • The siphon connection is not working
  • The pump is not functioning as it is not closed tightly or it’s clogged

The dishwasher stopped mid-cycle, and checking the dishwasher, everything seems to be fine. The dishwasher is not working and the annoying light is still on. Before you call your local handyman, there are a few things that you can do. We will look at a few common issues and how they might solve your issue.

The tap symbol on the Bosch dishwasher indicates that inlet filters and outlet anti-flooding hose are blocked. This means that water flow through the dishwasher is too slow. The tap could be jammed with buildup deposits or could be clogged. Check the inlet tap and valve going into the dishwasher under the sink is open by turning it anti-clockwise.

Solid light check water signal

If the signal is solid, check if the filters for the inlet hose in the unit and the drain are blocked. You can also try and increase the water pressure by turning the water tap about halfway.

A flashing warning light means that the unit needs a service call. The water warning signal is from the unit not draining the water. Check the drain hose and pump. If the hose is bent or clogged clean it up and set it without bends. Clean up the pump from debris and lock the waste pump lock cover tight. Also, check if the siphon is sealed, and if necessary open the siphon.

Depending on the type of dishwasher you have, you can reset the dishwasher to get it to drain. You can reset the dishwasher by long-pressing the start button for 3-5 seconds. In older models, press the cancel or drain button to drain the unit. If the problem is not solved, reboot the unit by turning off the unit’s power and on the circuit breaker for about 30 seconds. Power on the dishwasher, and it should operate normally.

The main reason why your dishwasher is not draining water is the clogged filters in the outlet hose. Food Debris is the main cause of blocked drain. Clean up the filters and the outlet hose.

If that does not solve the issue, continue down to the basin and drain pump. The drain pump drains wastewater using an impeller. The pump may fail if it runs dry i.e. it runs without water. Shut the unit down as you troubleshoot to prevent damage to the pump. Thoroughly clean the filters, basin, and pump and reset the unit. The Bosch dishwashers are supposed to run all cycles without errors.

The dishwasher might flash a red warning signal when the washing temperatures and low. The dishwasher uses an element to heat the water for cleaning the dishes. If the operating temperatures are low, the unit takes a long time to clean. It will start flashing a red warning light indicating the heating element might be faulty and needs replacement.

The tap warning sign is not indicative of problems with water flow issues. It is meant to notify the owner that there are problems with the dishwasher. When the signal blinks, it means that it is a more serious issue. Reset the dishwasher and turn it back on after a few minutes. If it is still blinking, it could be an e15 error.

To correct an e15 error, disconnect the power supply cable and tilt the dishwasher 45°. These actions keep the anti-flooding switch from sticking in the tray. To drain water in the tray, tilt the unit and dry the water. Let it dry out for a day and resume operation. Tilting and draining water actions are enough to correct the e15 error. If it keeps signalling, it shows a more serious fault.

Seek a specialist for further advice

Also, check visually that there is no water leakage from the unit. The dishwasher tank can burst after a prolonged use period, though this is rarely the case. The dishwasher sensor may also be faulty, and it may run even without water in the tank.

Do not run the machine with leaking water into the tray. Find the reasons behind the water leaking before continuing use. Remember to replace the sensor of the unit for alerts when it malfunctions.

Before you load the dishwasher unit, read the operating manual to keep the unit’s water flow pressure enough. When you load the dishwasher, space out dishes on the racks so that water flows through the dishes. Then, add the detergent onto the detergent holder on the dishwasher’s door, close and close the lid. On the left side of the control panel, press the power button for a wash cycle.

To prevent the dishwasher’s malfunctions, schedule regular cleaning of the filters and the dishwasher unit. The filter is a cylindrical tube that turns locks into position. Locate the bottom filter on the bottom rack and the upper one. Twist to unlock them. Use warm soapy water to hand washes the filters, rinsing under running water.

To clean the dishwasher unit, pour a cup of white vinegar into a dishwasher-friendly container. Run the dishwasher hot-water cycle to remove grease and residues. It will remove smells too. Sprinkle baking soda on the bottom of the dishwasher for a final rinse. Use Bosch de-scaler a few times a year to remove water deposit buildup.

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