Miele F133

Miele error code F133 indicates: The device reports an error and the steam function does not activate at all, as no temperature reading is detected..

The primary root cause for Miele code F133 is: The steam generator PT1000 temperature probe circuit is interrupted (cable cut). The electronics read an infinite resistance, which is an invalid value and prevents heating from starting..

To resolve error code F133: Turn off the power to the device. Access the PT1000 probe and check the continuity of its wires and connectors. Measure the resistance of the probe; an infinite ("OL") reading on the multimeter indicates an internal cutoff. Replace the defective probe.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Miele code F133 persists, the physical component causing The steam generator PT1000 temperature probe circuit is interrupted (cable cut). The electronics read an infinite resistance, which is an invalid value and prevents heating from starting. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.