Why is my Fisher Paykel washing machine leaking? Using too much detergent can cause clogs that lead to leaks. Always use HE detergent with front-loading washers, adding the lowest recommended amount. Troubleshoot common reasons for a Fisher Paykel washer leaking water to locate and stop leaks at the source. 1. Washer is not level. 2. Leaks due to oversudsing. 3. Drain hose is leaking. 4. Water inlet valve malfunction. 5. Damaged washer door seal.