TROUBLESHOOTING
TROUBLESHOOTING
Before determining any specific cause of a breakdown or abnormal operation of your dishwasher, check that:
1.Turn all switches ON, except for the extended wash switch.
2.Wash arms are clean.
3.Scrap screen is properly positioned and clean.
4.Thermostat(s) are at their correct setting.
5.Sanitizer, detergent, and rinse additive dispensers are adequately filled.
6.All plumbing valves are open.
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 |
|
| Make sure the extended wash switch is in |
|
| the OFF position. |
|
|
|
Low or no water | Main water supply is turned off | Turn on house water supply |
|
|
|
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 temperature to |
is low when in use | at machine too low | 60°C/140°F for all machines |
| Hi limit tripped | Reset hi limit |
|
|
|
Insufficient pumped spray | Clogged spray arm | 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 (501LT is 60°C/140°F) |
|
| (Check all valves to be |
|
| sure they are clean and operating) |
| Hi limit tripped | Reset hi limit |
|
|
|
Poor washing results | Water level low in wash tank | Check fill valve and water pressure |
| should be at or 1/2" (13mm) |
|
| above screen |
|
| Detergent dispenser not | Contact service agent |
| operating properly |
|
| Insufficient detergents | Check and fill |
|
| Contact detergent supplier |
| Detergent setting too low | Contact detergent supplier |
| Wash water temperature too low | See above booster temperatures |
| Wash arm clogged | Clean wash arm |
| 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 |
| Electric element has | Clean and delime |
| soil/lime buildup |
|
|
|
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