Dacor Dishwasher Fault Codes

by Samurai Appliance Repair Man on July 9, 2009

in Dishwasher Repair

EDW/IDW Models

Display Indicates
F1 Inlet Valve Fault
F2 Circulation Pump Fault
F3 Electrical Heater Fault
F4 Drain Pump Fault
F5 Air Flaw Fan Fault
F6 Controller Fault
F9 WPS Sensor Fault

 

ED/ID30 Models

FAULT CAUSE EFFECT SOLUTION
Drain Pressure Switch is in the closed position after two full drain procedures Three long beeps, red light
flashes below door.
Press Cancel key twice to reset this fault. Fault will occur again in the first Drain if the conditions are still true. See component diagnosis section for troubleshooting.
Water in
Base Pan
Floor Guard switches to a open position caused by a flood condition in the base Cycle will stop, followed by three long beeps. Drain pump will activate until the floorguard switch is reset. Floorguard LED will turn ON and red light will stay steady below door. Floorguard switch will reset and clear this fault, when water is removed from the base pan.
F3 Controller failure to communicate with the Atmel 16 on the power board. The dishwasher loads will not function. A fault can be visible in the first 15 seconds of initial power-up. “F3” will flash on the display and will be visible to the user. Dishwasher will be disabled. Check Control and Power Board Compatibility. Check power/controller board communication cable.
F4 No response signal from the WPS Wash cycle will go into a default timetable and soil=3; temp=0. F-4 appears for the failure test mode. Check WPS connection. Replace WPS
F5 Controller failure to communicate with PIC or no PIC software in the power board PIC Microcontroller There is no temp or soil information reported to the controller. Controller will default to soil=2 & temp=0. F-5 appears in the failure test mode. Replace power board.
F9 Heater failure Temperature does not increase See component diagnosis section for troubleshooting.

NOTE: There will never be an F4 and F5 error at the same time.

 

MDW24 Models

Display Codes (Readout)  
LO Low Liquid in the Rinse Aid Dispenser 
PF A Power Failure has occurred 
HO Water Heating Delay 
CL Close and latch the door 
01-04 Hours delay before the dishwasher will start
CF Clean Filters 

 

ED/ID/PD/MD24 Models

FAULT CAUSE EFFECT SOLUTION
F1 Pressure Switch is in the closed position after two full drain procedures. Three long beeps. F1 will be displayed only during the Diagnostic mode. Press Cancel key twice to
reset this fault. Replace Pressure
Switch.
F2 Inlet Valve does not
close.
Three long beeps. F2 will be displayed to the user and in Diagnostic mode. Drain pump is ON until open door. Press Cancel key twice to reset this fault Replace Inlet Valve. Replace control board.
F3 Low inlet water pressure. Three long beeps. F3 will be displayed to the user and in Diagnostic mode. Press Cancel key twice to reset this fault. Ensure that Inlet hose is ON. Replace Flow Meter. Replace Inlet Valve.
F4 No response signal from the WPS. Wash cycle will go into a default time table soil 3 & temp 0. F4 will be displayed only during the Diagnostic mode. Check WPS connection. Replace WPS.
F9 Heater failure Temperature does not increase. Wash cycle will go into a default time table for Heater ON time. F9 will be displayed only during the diagnostic mode. Replace heater. Replace WPS. Replace Control board.

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