Wash tank over-heats; water is excessively hot and may cause steam bursts when opening door.

Safety first: Turn off power and allow the machine to cool. Do not operate with suspected overheating.

Step-by-step checks:

• Verify temperature: Use a thermometer to confirm actual tank temperature versus the setpoint.
• Inspect thermostat/probe: Ensure the sensor is properly installed and not coated with heavy scale. Replace if readings are inaccurate.
• Check heater relay: With power OFF, inspect the heater contactor or relay for welded contacts. Replace if contacts are stuck closed.
• Test high-limit: Confirm the high-limit thermostat is functional and not bypassed. Replace if it does not open at its rated temperature.

When to call a technician: Overheating is a safety issue; a qualified technician should verify all safety controls before returning the machine to service.