H0120801702A Genuine Dishwasher Weir Including Flow Meter for Fisher & Paykel, Haier Dishwashers, Water Inlet Weir and Flowmeter

H0120801702A is a genuine weir assembly with the flow meter included, used in Fisher & Paykel and Haier dishwashers. The weir is the moulded water chamber, usually on the side of the tub, that incoming water passes through on its way into the wash, and the flow meter measures how much has gone in. Haier lists more than one weir with a flow meter, so confirm this number against your old part or your model's parts list.

Dishwasher filling problems and the flow meter

When the inlet valve opens, water travels through the weir, and on many designs an air gap and breather help stop wash water being drawn back toward the supply. Inside the flow meter, a small impeller typically spins as water passes, sending pulses to the controller so it knows when the right amount has arrived. If the meter sticks or its sensor fails, the dishwasher may overfill, underfill, take far too long to fill or stop with a water fault. A cracked weir or tired seal shows up as water on the floor or in the base tray.

Part details

• Genuine part H0120801702A
• Weir assembly with flow meter included
• For Fisher & Paykel and Haier dishwashers
• A suffix version, more than one weir is listed

Replacing the weir

Isolate the power at the wall, shut the tap and bail any water out of the sump before you start. The weir is usually reached from the side of the tub, so the dishwasher may need to come out of its cavity with a panel removed. Photograph the hoses and the flow meter plug, fit fresh seals if the old ones are flattened, then run a cycle and check for leaks.

Questions about this part

My dishwasher shows a water fill error. Is the flow meter the cause?

It's one possibility. A fill fault can also come from a closed tap, a kinked inlet hose, a blocked inlet filter or a failed inlet valve, so check those first. If water is entering normally but the error keeps coming back, the flow meter becomes a stronger suspect.