Troubleshooting

TROUBLESHOOTING

Before determining any specific cause of a breakdown or abnormal operation of your dishwasher, check that:

1.Power supply is turned on. All switches are ON.

2.Wash arms are clean.

3.Scrap screen is properly positioned and clean.

4.Thermostat is at the correct setting.

5.Sanitizer, detergent, and rinse additive dispensers are adequately filled.

6.All plumbing valves are open and drain hose is not kinked.

If a problem still exists, use the following table for troubleshooting.

CONDITION	CAUSE	SOLUTION
Machine will not start	Door not closed and latched	Make sure door is fully latched
	Main switch off, or unit unplugged . .	Check disconnect or plug into outlet

Low or no water	Main water supply is turned off . . . .	Turn on house water supply
	Water level setting low	Adjust water level

Chemical not feeding	No chemical in container	Replace or fill container
	Feed tubes to/from chemical	Clear obstruction and flush
	pump clogged	with hot water
	Screen on feed tube clogged	Clean and replace
	Tubing kinked or split	Straighten or replace tubing

Water temperature	Incoming water temperature	Raise house supply temperature to
is low when in use	at machine too low	60°C/140°F for all machines

Insufficient pumped spray	Clogged spray arms	Clean
pressure	Scrap screen full	Must be kept clean and in place

Low final rinse temperature	Low incoming water	Check the booster - be sure the
	temperature	thermostat is set to maintain 66°C/180°F
		temperature (401-L PLUS is 60°C/140°F)
		(Check all valves to be
		sure they are clean and operating)

Poor washing results	Detergent dispenser not	Contact service agent
	operating properly
	Insufficient detergents	Check dosage
		Check and fill
		Contact detergent supplier
	Detergent setting too low	Contact detergent supplier
	Wash water temperature too low . . . .	See above booster temperatures, run cycle
	Wash arms clogged	Clean wash arms
	Improperly scraped dishes	Check scraping procedures
	Ware being improperly	Use proper racks - do not overload
	placed in rack	racks
	Improperly cleaned	Unclog wash arms to maintain
	equipment	proper pressure and flow conditions

No water in wash well	Opening door prior	Close and latch door. Wait for green light
	to cycle completion	to go out before opening door.
	Water supply is turned off	Turn on supply

No water in wash tank	Door not latched	Latch door
after activating the		Wait for wash tank to fill
ON/FILL switch
Cycle time increases	Incoming water temperature	Raise temperature to 60°C/140°F for all
with each cycle	is too low	machines.

CONDITION

CAUSE

SOLUTION