Symptoms
• Washing machine will not fill with water or fills very slowly
• Error code E15 displays on the digital control panel
• Cycle cannot start or stops unexpectedly mid-cycle
• Water inlet valve makes unusual clicking or humming sounds
• Machine may beep repeatedly when attempting to start a wash cycle
• Wet clothes remain in the drum without water being present
Possible Causes
• Kinked, twisted, or pinched water inlet hose connections
• Water supply shut-off valves (hot or cold) are partially or fully closed
• Clogged inlet hose screens due to sediment or mineral buildup from municipal water
• Faulty water inlet valve solenoid unable to open properly
• Low water pressure in the home's plumbing system (below 20 psi minimum requirement)
• Water inlet hoses not properly connected to both the machine and wall faucet connections
• Frozen water supply lines in cold climates or unheated spaces
• Defective water level sensor giving false readings to the control board
Safety Checks You Can Do
• Turn off the washing machine and unplug it from the electrical outlet for 30 seconds, then plug it back in and restart the cycle
• Check that both the hot and cold water shut-off valves behind or under the washing machine are fully turned counterclockwise (open position)
• Inspect both inlet hoses for visible kinks, twists, bends, or damage along their entire length
• Verify that inlet hose connections are hand-tightened securely at both the machine and wall faucet connection points
• Turn off water supply valves and carefully disconnect inlet hoses, then run water into a bucket to test actual water pressure flow
• Remove inlet hoses and inspect the small mesh screens inside the connection fittings for sediment buildup; rinse screens with clean water if debris is present
• Check your home's main electrical circuit breaker panel to ensure the washing machine circuit breaker is in the fully ON position and has not tripped
• Allow washing machine to sit in a warm location for 2-3 hours if in a cold garage or basement, then attempt a cycle again
• Run a test cycle with the hot water valve opened and another test with the cold water valve opened separately to isolate which supply line may have the problem
• Contact Bosch customer support or a certified Bosch service technician if error persists after completing these checks, as the water inlet valve or control board may require professional replacement
Safety First
Always disconnect the appliance from power before performing any checks. If you are unsure about any step, please contact a qualified technician.