Bosch Excell washing everything on hot, WAE24465GB/01

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Bosch WAE24465GB/01 overheating washes; hot laundry suggests fill/rinse issue rather than heater alone

The problem

An 11-year-old Bosch Excell WAE24465GB/01 was reported to heat even a cold wash rapidly, with drum water measured at 79°C after about 10 minutes. The owner also said laundry was coming out too hot to handle at the end of the cycle and suspected the heater might be permanently on or the thermostat faulty.

Likely cause

The accepted reply said overheating alone would not normally leave laundry hot at the end because the machine should rinse several times with cold water. The stronger diagnosis was either that the programme was aborting before rinses/final spin, or that a hot water supply had been connected to the cold inlet. No fault with the thermostat was confirmed.

What fixed it

Recommended checks were to observe whether the machine completes the rinse cycles and final spin, look for any error indication, confirm the appliance is not being fed with hot water by mistake, and run a rinse-only cycle to see whether the incoming water is being heated. The exact repair was not confirmed in the discussion.

Checks to try

• Measured drum water at 79°C after about 10 minutes on a cold wash
• Advised to check whether the machine skips rinse cycles and final spin
• Advised to look for an error code or flashing lights
• Advised to confirm the cold inlet is not connected to a hot water supply
• Advised to try a rinse-only cycle and see if the water heats