Fisher & Paykel Dishwashers U1 Error: Drawer open / not latched
Fisher & Paykel dishwasher error code U1 is a low-severity fault meaning Drawer not closed properly. U1 is a safety prompt, not a component failure. U1 does not require a reset — it clears automatically as soon as the drawer is properly closed and latched.
~95%
DIY Fixable
From $0
Typical Repair Cost
5 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. U1 is a safety prompt, not a component failure. Once the drawer is properly closed and latched, the dishwasher will operate normally. No repair is needed in the vast majority of cases.
Can I reset the code?
No. U1 does not require a reset — it clears automatically as soon as the drawer is properly closed and latched. If U1 persists after the drawer is firmly pushed closed and the rack is clear of obstructions, the closure sensor requires inspection.
When to stop immediately?
Stop if you notice: U1 persists after confirming the drawer is firmly closed and the rack is clear of obstructions, Drawer latch does not click when pushed closed — latch mechanism may need replacement.
Symptoms You May Notice
U1 displayed when attempting to start a cycle
The drawer shows U1 and will not begin washing — it is a safety interlock, not a component failure.
Cycle starts then immediately stops
The drawer begins filling but the latch sensor detects movement of the outer drawer body and aborts the cycle with U1.
Control panel lights up but Start is not accepted
Programme selection works normally but pressing Start returns U1 instead of initiating a cycle.
Possible Causes
Drawer not fully pushed closed
The most common cause — the drawer body has not been pushed firmly enough to engage the latch mechanism.
DIY PossibleItem preventing full drawer closure
An oversized dish, pot handle, or utensil is protruding beyond the rack and preventing the drawer from seating fully in the closed position.
DIY PossibleDirty or worn drawer latch
Food residue has built up in the drawer latch cavity, preventing the latch from engaging fully when the drawer is pushed closed.
DIY PossibleFaulty drawer closure sensor
The microswitch that confirms the drawer is in the closed and latched position has failed or become misaligned.
Requires ProfessionalSafe Checks You Can Do
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1
Push the drawer firmly closed
With both hands on the drawer handle, push the drawer firmly until you hear or feel a positive click from the latch. The drawer should have zero play when fully closed.
DishDrawer latches require a deliberate firm push — a gentle push will not engage the latch fully.
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2
Check rack loading
Open the drawer and check that no dishes, pot handles, or cutlery are protruding beyond the rack boundary in a way that would foul the drawer body closing against the frame.
Tall items should always be loaded in the centre of the rack, away from the sides, to avoid interference with the drawer travel.
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3
Clean the latch mechanism
Inspect the latch receptacle on the drawer frame and the latch pin on the drawer body for food residue or grease build-up. Wipe both surfaces clean with a damp cloth and try closing the drawer again.
A cotton bud is useful for getting into the latch slot to remove built-up detergent residue.
When to Call a Professional
Contact a qualified technician if:
- Drawer closure microswitch has failed — requires switch replacement
- Drawer frame latch mechanism is broken or deformed and requires replacement
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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