ELECTRIC HEAT CHART
Component Under
Test
Test Point
Measure
Thermistors
Disconnect connector from
J2 to measure resistance
1QTM = J2-1 / J2-6
2QTM = J2-2 / J2-7
3QTM = J2-3 / J2-8
100°F = 55.7kΩ
120°F = 34.9kΩ
140°F = 22.6kΩ
158°F = 15.5kΩ
160°F = 14.9kΩ
180°F = 10.1kΩ
200°F = 7kΩ
212°F = 5.6kΩ
Float Switch
1FS = J2-4 / J2-10
Continuity
Door Interlock
1LS = J11-1 / J11-2
Continuity
CONTROL BOARD AND RELAY BOARD LEDS
CONTROL BOARD
Control Board
Description
DOOR
On when door interlock 1LS is closed.
MICRO
Flashers at a rate of 1 sec on, 1 sec off when machine is
on.
WATER LEVEL
LOW - On when float switch 1FS is closed.
RS485
Use with NAFEM Gateway
RELAY BOARD
Relay Board
Description
BOOSTER
On when triac Q3 (booster circuit) is gated on.
FILL
On when triac Q4 (fill circuit) is gated on. 1SOL on.
TANK HEAT
On when K9 is energized. Tank heat on.
EXT BSTR & VFC
On when machine is on.
WASH
On when K8 is energized. Pump motor on.
RINSE AID
On when triac Q2 (rinse feeder is gated on. 1CR is
energized.
DETERGENT SANITIZE
LEDs present on service replacement relay boards, nut
no used on SD3.
SD3 Series - TROUBLESHOOTING
Page 27 of 37
F45576 (1015)
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 ...