F1
Klarstein
Indoor Ambient Sensor Error (Alternate Code)
Klarstein AC displays F1 and may not cool correctly; fan may still run.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Faulty indoor ambient NTC sensor, sensor out of position, damaged sensor wiring, defective main PCB sensor circuit
How to Fix / Troubleshooting
This code is functionally similar to E1 on some Klarstein models.
Safety: Unplug the unit before removing covers.
Steps:
- Locate ambient sensor: Typically near the front air intake grille or behind the control panel.
- Check placement: Ensure the sensor is not touching the evaporator coil or exposed to direct sunlight from the casing window.
- Inspect and reseat: Check the two-wire harness and connector to the PCB. Reseat firmly.
- Test and replace: Measure resistance; if open/shorted, replace with a Klarstein ambient NTC sensor.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Indoor Ambient NTC Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements