APPENDIX A
Coded Troubleshooting Guide
WARNINGS
CODE/MALFUNCTION
POSSIBLE CAUSE
REMEDY
71
Refer to uncoded
Door controls
troubleshooting chart.
73
1. Power line malfunction.
1. Recycle power.
Control board
2. Control board.
2. Replace control board.
77
1. Power line malfunction.
1. Recycle power.
Communication lines
2. Wire connections
2. Check wiring between
between control board and
control board and display
display board.
board.
3. Display board.
3. Replace display board.
4. Control board.
4. Replace control board.
79
1. Door gasket.
1. Clean or replace.
Leak test failure (exceeds
2. Clean or repair.
2.7mm Hg/min) or a total
not closing.
of 0.783 psia
3. Clean or repair.
not closing.
4. Chamber drain check
4. Clean or repair.
valve(s) not closed.
CAUTIONS
CODE/MALFUNCTION
POSSIBLE CAUSE
REMEDY
02
1. Water supply shut off.
1. Turn on water supply.
Negative pulse retarded
2. Water pressure
2. Check and ensure water
exceeds the following
inadequate.
supply pressure is 30-70 psig
times:
dynamic.
16x16: 5 minutes
3. Door gasket.
3. Clean or replace.
20x20: 8 minutes
4. Chamber drain screen
4. Clean screen.
clogged.
5. Solenoid valve 2SOL
5. Clean or repair.
not opening properly.
6. Clean or repair.
not closed.
7. Clean or repair.
not closed.
8. Solenoid valve 6SOL
8. Clean or repair.
not opening properly.
MD0354
A-1