What F:43 Means
F:43 is a pressure sensor error: the sensor’s output signal went above 4.8 volts. The cycle continues and the code is visible only in the service menu. The pressure sensor measures the water level, so fills can become unreliable.
Common Causes of F:43
- Pressure sensor failed
- Pressure hose blocked
- Wiring problem
🔧 One Safe Check You Can Try
Nothing to adjust as an owner. Watch for overfilling or underfilling and book a check.
⚠ Why You Shouldn't Go Further Than That
- The sensor, its hose and the control are tested together under the machine.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.