SYMPTOM
POSSIBLE CAUSES
No display
1.
No power to machine. Fuse blown or circuit breaker tripped.
2.
Fuse F2 on relay board open.
3.
Missing 120VAC from 1T.
4.
Missing 11.5-16VAC from 2T to control board J1 1&3.
5.
Display board unplugged from control board or display board malfunction.
6.
Control board malfunction.
Machine will not fill. No error
code displayed.
1.
Door is not shut.
2.
Water not turned on.
3.
Door interlock malfunction.
4.
Door magnet missing
Machine will not wash. Tank
is filled with water. (Door
must be opened and closed
to start wash cycle.)
1.
Door switch malfunction. Verify DOOR LED on control board is on when
chamber door is closed.
2.
Tank float malfunction. Verify LOW LEVEL WATER LED on control board is on.
3.
Obstruction in pump.
4.
Motor overload tripped.
5.
Motor malfunction
Booster heater does not heat
at all.
1.
No water in dishwasher tank or float circuit malfunction
2.
No power to booster.
3.
Fuse blown in booster circuit or circuit breaker tripped.
4.
Contactor malfunction (3CON).
5.
Transformer malfunction 120VAC (1T).
6.
High limit thermostat(s) malfunction
7.
Thermistor malfunction
8.
Heater element malfunction
9.
Control board assembly malfunction
Rinse water temperature
does not reach 180°F.
1.
Heating element malfunction
2.
Incoming water temperature too low (minimum is 110°F).
3.
Voltage to booster heating circuit not correct.
4.
Incorrect heater being used.
5.
Booster heating elements coated with lime
Booster heater repeatedly
blows fuse or trips circuit
breakers
1.
Undersized fuse.
2.
Check wire and fuse size.
3.
Short circuit in internal wiring
4.
Incorrect voltage or heater
Booster heating element
burns out repeatedly
1.
Element powered with low or no water in booster.
2.
Check for correct heater and voltage. Verify with machine data plate.
3.
Contactor malfunction (3CON).
SD3 Series - TROUBLESHOOTING
F45576 (1015)
Page 36 of 37
Summary of Contents for SD3 Series
Page 1: ...SD3 Series SD3 ML 130232 SERVICE and PARTS MANUAL F45576 1015 ...
Page 23: ...WIRING DIAGRAM 1 PHASE Fig 16 SD3 Series ELECTRICAL OPERATION Page 23 of 37 F45576 1015 ...
Page 24: ...WIRING DIAGRAM 3 PHASE Fig 17 SD3 Series ELECTRICAL OPERATION F45576 1015 Page 24 of 37 ...
Page 39: ...SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 2 2015 ...
Page 41: ...CONTROLS SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 4 ...
Page 43: ...CONTROL CABLES SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 6 ...
Page 45: ...CONTROL BOX SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 8 ...
Page 47: ...MOTOR AND PUMP SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 10 ...
Page 49: ...UPPER WASH ARM SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 12 ...
Page 51: ...LOWER WASH ARM SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 14 ...
Page 53: ...RINSE PIPING WITHOUT BOOSTER SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 16 ...
Page 55: ...RINSE PIPING WITH BOOSTER SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 18 ...
Page 57: ...BOOSTER PIPING SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 20 ...
Page 59: ...ELECTRIC BOOSTER TANK SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 22 ...
Page 63: ...DRAIN UNIT SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 26 ...
Page 67: ...DOOR ASSEMBLY SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 30 ...
Page 69: ...PANELS AND RACK SUPPORT SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 32 ...
Page 71: ...SD3 DISHWASHER REPLACEMENT PARTS FORM 43302 Rev B OCTOBER 2015 PRINTED IN U S A ...
