Motor overheating (monitoring with PTC) indicates excessive heat detected by the PTC sensor, possibly due to faulty connections or missing PTC configuration. The manual's first action is: “Check whether the motor is overheated. Check the connections to the PTC. Check that P087 has not been set to '1' without a PTC being connected.”
- Model
- Siemens MICRO MASTER and MIDI MASTER
- Display shows
- Overheating of motor (monitoring with PTC) (F004)
- Type
- Fault code
- Source
- Manual p. 42
What F004 means
Overheating of motor (monitoring with PTC) p. 42
What to do
- Check whether the motor is overheated. Check the connections to the PTC. Check that P087 has not been set to '1' without a PTC being connected. p. 42
Before you service the product, read the safety instructions in the manual p. 4.
If F004 is still not resolved
- Only qualified personnel may connect, start the system up and repair faults. p. 3 “Only qualified personnel may connect, start the system up and repair faults.”
- These personnel must be thoroughly acquainted with all the warnings and operating procedures contained in this manual. p. 3 “These personnel must be thoroughly acquainted with all the warnings and operating procedures contained in this manual.”
This page summarises what the manufacturer’s manual says about F004; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.