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IMPORTANT:
Please read this
bulletin and pass
on to others in your
organisation.
DISHDRAWER
F1 FAULT CHECKLIST FOR PHASE 3 DISHDRAWERS – NZ, AUS,
SGP, USA
First determine whether it’s a Full Flood F1, Small Puddle F1 or a Dry F1.
A Full Flood F1 is when there is sufficient water (2-3mm throughout the base) in the base to trigger the
flood switch.
A Small Puddle F1 is when a small amount of water has triggered the flood switch.
A Dry F1 is when the base is free of water.
FULL FLOOD F1’s
Check for leaks or evidence of leaks in the following places:•
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Inlet hose to fill valve connection
Fill Valve body
Holes in fill hose or drain hose
Damage to heater plate - chipped enamel
Motor housing and heater plate seals – pinched, contaminated or poor join
O-rings – motor housing, drain inlet
Dispenser – seal, diverter, weld
Lid area
NOTE:- If there is evidence of the leak coming from the lid area (eg water down the outsides of the tub or
if too dry, look for rust spots on the cut edge of the slide bracket) look for the following:• Lid Actuator jammed (check using diagnostics)
• Lid gearbox not working
Wire off actuator
Wire off actuator terminal at RFI board
Dry solder joint on actuator terminal on RFI board
Pins pushed through on actuator terminal on RFI board
Gearbox case unclipped
Gearbox fallen off slide
• Lid assembled correctly
Lid on yoke, lid actuator in yoke, actuator in gearbox nut, lid gearbox assembly on slide
• Lid seal damage
• Lid not working due to electrical connection to Controller
• Interference on Yoke – sound insulation
• Lid stiffening brackets fitted properly
• Interference on lid:
Oversize dish/utensil near the tub rim
Fisher & Paykel Appliances Ltd
78 Springs Road, East Tamaki, PO Box 58-732, Greenmount,
Auckland, New Zealand, Ph: 09 273 0600, Fax: 09 273 0656
Fisher & Paykel Customer Services Pty Ltd
A.C.N. 003 3335 171, 19 Enterprise Street, Cleveland, QLD 4163
PO Box 798, Cleveland, QLD 4163, Ph: 07 3826 9100, Fax: 07 3826 9164
Fisher & Paykel Appliances Inc
27 Hubble, Irvine, California, CA92618, USA,
Ph: 949 790 8900, Fax: 949 790 8911
Fisher & Paykel Appliances Ltd UK
Broxell Close, Wedgnock Industrial Estate, Warwick CV34 5QF,
Ph: 01926 626700, Fax: 01926 626701
DW028
November 2001
COPYRIGHT © FISHER & PAYKEL LTD 2001
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Drain support wire tie
Tub weld leaks:
Flange to Tub
Vent to Tub
Customer related wet F1’s that have had improvements:
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A Spray arm being off in a hot fill situation did cause a F1 due to the overfilling water coming out the
rear vent before a U1 fault stopped the water supply.
NOTE: A change made to the controller now ensures that a U1 fault will come up first. All products from
CRM729231 have this improvement.
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A rinse aid spill can cause excessive foaming which will subsequently spill out the drying vents and
trip the flood switch. Please note that most of the foam may well have dried up by the time the
serviceman arrives to check the machine.
NOTE: A change made to the controller will significantly reduce this. All products from CKM756697 have
this improvement.
SMALL PUDDLE F1’s
Check the following:
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Condensation on the Flood Switch or evidence of such.
That the product is level – if the product has a lean to the left rear, a small amount of water may
trigger the flood switch.
DRY F1’s
Check the following:
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F1 in top tub only and a dead bottom tub indicates a blown power supply resistor in the bottom heater
plate.
Condensation on the flood switch or evidence of such.
Corrosion on the RFI board.
Faulty connection on the chassis harness from controller to RFI board.
DW028
November 2001
COPYRIGHT © FISHER & PAYKEL LTD 2001
HEATER PLATE FAILURES ON PHASE 3 DISHDRAWERS – NZ,
AUS, SGP, USA
Melted Fuse Link:
Cause:
• Excess heat generated by mainly the heater element or the power supply resistor.
Fault:
• More than likely that this was due to a faulty controller.
• IMPORTANT – check all the coils before starting machine because if the power supply resistor has
caused the melted fuse link, excess current may well have been going through one of the coils, (inlet
valve, detergent dispenser diverter valve or rinse aid pump valve) shorting it, and if this coil is not
replaced the fault may re-occur. NOTE: All coils should measure approximately 70ohms
Damaged Power Supply Resistor:
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This will cause the controller to lose power.
If it is the bottom tub whose power supply resistor fails and because the bottom tub supplies the power
to the RFI board and hence flood circuit, the top tub will F1.
Damaged Heater Resistor (Heater Element):
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Replacing the heater plate should be all that is required.
F4:
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The F4 time for the Ph3 DishDrawer is 120min from the time the element is switched on for it’s heating
cycle.
The Ph3 DishDrawer does not show HE when heating, they merely stop counting down time.
NOTE: If the heater resistor (element) fails, the power supply resistor will heat the water but at a
greatly reduced rate, so that after 2 hours the water may seem warm but it will not get to the required
temperature. This could cause a bit of confusion in that the service person may think the element is
still working.
DW028
November 2001
COPYRIGHT © FISHER & PAYKEL LTD 2001