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12. WASH WATER PROBLEMS
A. Wash water does not fill into tank in process mode –
1. Standard Processor
a
Check that the water hose is connected & water supply is opened to processor.
b
Check solenoid valve filter screen. Turn OFF water supply & disconnect the water hose to
check. If clogged or dirty, clean as required.
c
Check the Water Sensor integrity using the TEST POINT CHART & CONNECTOR DIAGRAMS.
Remove the J9 connector, turn POWER ON, and depress the Film Shutter. If the water begins
to flow, replace Water Sensor (p/n 45450), otherwise;
d
Check the Solenoid Valve integrity using the TEST POINT CHART as follows. Check voltage
@ J1, pins 3 & 9. If voltage is 103.5 – 126.5VAC, replace the Solenoid Valve (p/n 43980),
e
If voltage is NOT 103.5 – 126.5VAC, replace the Electronics Module (p/n 45415)
2. Internal Water Recirculator Processor (45009 & 45009CUL)
a
Check that the water inlet hose reaches down BELOW the water level in the container.
b
Check that the water drain hose is properly installed in drain (see PLUMBING, page 9).
c
Check the Water Recirculation Pump integrity using the TEST POINT CHART as follows.
Check voltage @ J1, pins 3 & 9. If voltage is 103.5 – 126.5VAC, replace the Recirulation Pump
(p/n 45070),
d
If voltage is NOT 103.5 – 126.5VAC, replace the pump Starter Circuit PCB (p/n 45985)
B. Wash water intermittently runs ON and OFF - Standard Processor
1. Standard Processor
a
Check that the water drain hose is properly installed in drain (see PLUMBING, page 6).
Improper drainage causes water to rise setting off water level sensor fault and turning the water
off. As water partially drains, the water level sensor fault clears and water flow resumes.
b
Check solenoid valve filter screen. Turn OFF water supply before inspecting. If clogged or
dirty, clean as required.
c
Check that the water drain hose and/or drain tube is NOT clogged.
d
Check the water drain tube DOES NOT have a rubber washer.
e
Check the water supply pressure. If above 60psi, install pressure regulator (p/n 45550)
C. Wash water does not fill in 2 minutes from empty tank -
1. Standard Processor -Check the water supply pressure. If below 30psi a LOW pressure condition
exists which will not dispense 2 gal/min rate requirement.
2. Internal Water Recirculator Processor (45009 & 45009CUL)
a
Check that the water drain hose is properly installed in drain (see PLUMBING, page 9).
b
Refer to Electrical Diagrams and Test Points on page 19 and check the Water Recirculation
Pump integrity as follows.
- Check voltage @ J1, pins 3 & 9. If voltage is 103.5 - 126.5VAC, replace the Recirculation
Pump (p/n 45070).
- If voltage is NOT 103.5 - 126.5VAC, replace the pump Starter Circuit PCB (p/n 45985).
D. Wash water runs all the time in STAND BY mode –
1. Standard Processor
a
Check for any dirt or debris buildup in the coil of the solenoid and clean the parts as required
in order to allow proper solenoid functioning.
b
Check the electronics integrity using the TEST POINT CHART as follows. Check voltage @ J1,
pins 3 & 9.
c
If voltage is 103.5 – 126.5VAC, replace the Electronics Module (p/n 45415)
2. Internal Water Recirculator Processor (45009 & 45009CUL)
a
Check and verify there is NOT a fresh water supply hose connected. The water lines are
designed to operate from a water container for recirculation (page 9)
TROUBLESHOOTING
AT2000 XR Operation & Function Troubleshooting