STERO SG Service And Parts Manual Download

Page: 38 / 93

CONTROL BOARD LEDs

Designation

Function

Color

D65

Rinse Aid Sensor ON - Chemical Detected

Red

D66

Detergent Sensor ON - Chemical Detected

Red

D68

Line Monitor

Red

D69

Wash Pump ON

Red

D70

Sump High Limit ON - Tripped

Red

D71

Booster High Limit ON - Tripped

Red

D72

Rinse Pump ON

Red

D73

Spare Relay 1 ON

Red

D74

Spare Relay 2 ON

Red

D75

Sump Heater Relay ON

Red

D76

Fill Valve Relay ON

Red

D77

Drain Pump Relay ON

Red

D78

Booster Relay ON

Red

D79

Reset Active

Red

D80

Standby

Amber

D84

Switched Power Relay ON

Red

CONTROL BOARD TEST POINTS

Place unit in CONTROL PANEL SERVICE POSITION to access control board.

Line voltage test points cannot be tested using control board ground, use N for 120 volt machines and

L3/N for 120 volt components of the 208-240 volt machines and L2 for line voltage components.

NOTE:

N.O. contacts will show 0 volts until the relay is energized, they will then show the same voltage that is

present on the COM terminal.

Fig. 52

SG, SU-L, SU-H DISHWASHERS - ELECTRICAL OPERATION

F45577 (1215)

Page 38 of 59

Summary of Contents for SG

Page 1: ...SG SU L SU H DISHWASHERS SG SU L SU H SERVICE and PARTS MANUAL F45577 1215 ...

Page 2: ... REPLACEMENT CONTROL BOARD PROGRAMMING 18 SERVICE PROGRAMMING 8934 18 SOAP PROGRAMMING 7627 25 MANAGER PROGRAMMING 1001 27 TESTING SANITIZER BLEACH CONCENTRATION P P M 29 BYPASS WASH HEAT CYCLES FOR TROUBLESHOOTING 30 10K OHM THERMISTOR TEST BOOSTER 3QTM SUMP 1QTM 30 PURGE BOOSTER HOLDING TANK FOR SERVICE 31 DOOR ADJUSTMENT 31 SUMP HEATER TEST 32 BOOSTER HEATER TEST 32 100K OHM THERMISTOR TEST RIN...

Page 3: ...TOGGLE DIAGNOSTICS 53 ERROR CODES 53 TROUBLESHOOTING GUIDE WARE 55 TROUBLESHOOTING GUIDE MACHINE 56 SG SU L SU H DISHWASHERS COMPETITIVE 2015 Page 3 of 59 F45577 1215 PARTS CATALOG 6 0 ...

Page 4: ...ls VOM with measuring micro amp current tester Any VOM with minimum of CAT III 600V CE certified Sensitivity of at least 20 000 ohms per volt can be used In addition meter leads must also be a minimum of CAT III 600V Temperature tester thermocouple type Field service grounding kit Special Precision Chlorine Test Paper Vial for testing sanitizer p p m Cleaner used in removal of switch membrane T25 ...

Page 5: ...r SG SU L The holding tank will fill The water is then moved through the rinse arms to the sump Process repeats until the sump is at operational water level Sump heater maintains wash temperature With Booster SU H The booster will fill and heat to 140 F The booster water is then moved through the rinse arms to the sump Process repeats until the sump is at operational water level Sump heater mainta...

Page 6: ...erable until the POWER key is pressed PROGRAMMING MENUS There are 3 Programming Menus that can be accessed when the Menu Down Arrow button is selected Each menu has parameters that can be changed that affects the way the dishwasher operates Each menu is protected by a 4 digit access code Use the arrow keys to change the to the desired number and press enter to move to the next digit NOTE The Manag...

Page 7: ...e procedure to install 5 Check for proper operation LEFT AND RIGHT TRIM PANELS Disconnect the electrical power to the machine and follow lockout tagout procedures Certain components in this system are subject to damage by electrostatic discharge during field repairs A field service grounding kit is required to prevent damage The field service kit must be used anytime the control board is handled C...

Page 8: ...screws using 3 Phillips screwdriver Fig 8 2 Pull out control cover and disconnect switch membrane ribbon cable from connector 3 Pry up switch membrane Fig 9 4 Reverse procedure to install NOTE Before installing replacement membrane use cleaner to remove old adhesive and allow to dry 5 Check for proper operation CONTROL PANEL COVER Disconnect the electrical power to the machine and follow lockout t...

Page 9: ...ical power to the machine and follow lockout tagout procedures 1 Remove CONTROL PANEL COVER 2 Remove LEFT AND RIGHT TRIM PANELS Booster Holding Tank or LEFT AND RIGHT TRIM PANELS Sump tank 3 Drain sump or Booster Holding tank below air trap 1 Fig 13 inlet NOTE Not draining sump or booster holding tank may cause a leak Fig 13 4 Disconnect water level cable from sensor and tube clamp 5 Push plastic ...

Page 10: ...and pull from sensor 3 Remove snap cover 4 Remove tube from chemical sensor 5 5 Replace with new chemical sensor 5 6 Replace snap cover 7 Replace hose to tube and sensor Secure with clamps NOTE Do NOT use zip ties NOTE Do NOT over squeeze clamp Over squeezing causes leaks Replacing Chemical Pump 1 Twist pump Counter Clock Wise and slide off shaft 2 Reverse procedure to install DRAIN PUMP Disconnec...

Page 11: ...move LEFT AND RIGHT TRIM PANELS 3 Disconnect and drain water hose Fig 19 4 Disconnect electrical connections from valve 5 Remove mounting bracket screws 6 Remove fill valve from bracket 7 Disconnect and drain braided water line 8 Reverse procedure to install 9 Check for proper operation RINSE PUMP Disconnect the electrical power to the machine and follow lockout tagout procedures 1 Remove front tr...

Page 12: ...ove rinse pump 8 Transfer mounting bracket and fill valve to replacement rinse pump 9 Reverse procedure to install 10 Check for proper operation RINSE PROBE 2QTM Disconnect the electrical power to the machine and follow lockout tagout procedures 1 Remove LEFT AND RIGHT TRIM PANELS 2 Disconnect 2QTM at harness Fig 23 3 Remove rinse probe from rinse tee Fig 24 4 Reverse procedure to install NOTE Use...

Page 13: ...ng wash pipe Fig 25 NOTE Ensure retainer is off before removing wash pipe 5 Remove spindle using 13 16 deep well socket 6 Remove flow restrictor lower manifold only Fig 26 7 Remove wash piping nut using service tool Fig 27 8 Disconnect any wiring that impedes wash pipe assembly removal 9 Remove CONTROL PANEL COVER 10 Remove rear nut of rail 11 Loosen front nut and rotate rail Fig 28 12 Disconnect ...

Page 14: ...TANK FOR SERVICE 3 Remove RINSE PUMP with fill valve 1SOL attached for a path to remove wash pump motor assembly NOTE Stainless steel fill valve intake hose can remain connected but slack will need to be fed through back of machine to clear assembly out of the way Fig 29 4 Remove any chemical tubing blocking removal through the right side 5 Disconnect pump manifold hose Fig 30 6 Remove locator nut...

Page 15: ...onnect the electrical power to the machine and follow lockout tagout procedures 1 Remove front trim and right side panel 2 PURGE BOOSTER HOLDING TANK FOR SERVICE 3 Disconnect booster heater wires from contactor 4 Remove mounting screws Fig 35 NOTE Proper position with element wires on bottom 5 Remove booster heater 6 Reverse procedure to install 7 Check for proper operation BOOSTER THERMISTOR HIGH...

Page 16: ... Limit push reset button on face of both high limit protectors Verify that this does not fix issue before proceeding 1 Drain the sump 2 Remove LEFT SIDE PANEL 3 For Surface Mounted Thermistor remove mounting nut and disconnect lead wires at connector NOTE When installing thermistor mount tightly to booster surface and in same position as from the factory 4 For High Limit Protectors remove electric...

Page 17: ...and follow lockout tagout procedures 1 Place dishwasher in CONTROL PANEL SERVICE POSITION 2 Remove left side panel 3 Disconnect door switch from control board J10 4 Remove screw securing door switch Fig 42 NOTE Door switch magnet is located inside the door and is not serviceable 5 Reverse procedure to install NOTE Add small amount of Permagum between sensor and bracket NOTE Verify sensor is not lo...

Page 18: ...chine type SG SU L and SU H 1 Press MENU button on keypad NOTE Menu can also be accessed by shorting J27 SVC pins on control board See CONTROL PANEL SERVICE POSITION 2 Enter SERVICE MENU 3 Enter Service code 8934 4 Select Edit Parameters then Models 5 Pick model based on data plate on door 6 Select Exit Menu 7 Shut down and cycle power to the dishwasher Reboot 8 Once power is reapplied turn machin...

Page 19: ...operation Disabled Enabled Enabled Rinse Aid Flow Rate Stero Cold SU L Stero Cold SG Stero Hot SU H Rinse aid flow rate measured in mL per cycle OFF through 8 8 mL 1 8 mL Sanitizer Flow Rate Stero Cold SU L Stero Cold SG N A Sanitizer flow rate measured in mL per cycle Off to 100 mL 60 mL Detergent PWM Freq Stero Cold SU L Stero Cold SG Stero Hot SU H DO NOT ADJUST Contact Stero technical support ...

Page 20: ...A Stero Hot SU H Lengthens wash time if necessary to allow booster to heat incoming 110 F water to 180 F Time may vary Disabled Enabled Enabled Soft Start Period Stero Cold SU L Stero Cold SG Stero Hot SU H Reduces voltage and current to wash pump at beginning of wash cycle for 5 6 seconds Lower is not softer and higher is not harder If unsure how to adjust call Stero technical support 1 67 ms 2 0...

Page 21: ...comes up asking if you want to reset error log Log displays errors one at a time Toggle down to see past errors Fig 43 VIEW ERROR LOG Parameter Name Cold Units Stero Cold SU L Glass Washer Stero Cold SG Hot Units Stero Hot SU H Description Possible Values Log Stero Cold SU L Stero Cold SG Stero Hot SU H Displays last 10 log error entries Example Type Error WASH TEMP SENSOR SG SU L SU H DISHWASHERS...

Page 22: ...ame Cold Units Stero Cold SU L Glass Washer Stero Cold SG Hot Units Stero Hot SU H Display Valves and Pumps Stero Cold SU L Stero Cold SG Stero Hot SU H Valves and Pumps HH MM SS Fill Wash Drain Rinse 0 00 01 0 00 01 0 00 01 0 00 01 0 00 00 Heaters and Fan Stero Cold SU L Stero Hot SU H Heaters and Fan HH MM SS Sump Booster Fan 0 00 01 0 00 01 0 00 01 Chemical Pumps Stero Cold SU L Stero Hot SU H ...

Page 23: ...nitizer pump If chemical sensor value is below set threshold value priming stops Pump Menu Sanitizer NOTE Default setting shown in bold 1100mV Range 70 to 2900 mV Stero Cold SU L Stero Cold SG Stero Hot SU H Manual prime for detergent pump If chemical sensor value is below set threshold value priming stops Detergent NOTE Default setting shown in bold 1100mV Range 70 to 2900 mV Stero Cold SU L Ster...

Page 24: ...ts Stero Hot SU H Description Show Software Rev Stero Cold SU L Stero Cold SG Stero Hot SU H Will display machine type and software revision Example Version 2 01 RESET PARAMETERS Parameter Name Cold Units Stero Cold SU L Glass Washer Stero Cold SG Hot Units Stero Hot SU H Description Possible Values Default Value Reset Parameters Stero Cold SU L Stero Cold SG Stero Hot SU H Resets all parameters t...

Page 25: ...p Stero SU L Stero SG Stero SU H Rinse Aid pump operation Disabled Enabled Enabled Rinse Aid Flow Rate Amount Stero SU L Stero SG Stero SU H Rinse Aid flow rate amount measured in mL per cycle OFF through 8 8 mL 1 8 mL Sanitizer Flow Rate Amount Stero SU L Stero SG N A Sanitizer flow rate amount measured in mL per cycle Off to 100 mL 60 mL Detergent Threshold Stero SU L Stero SG Stero SU H Sets de...

Page 26: ... value is below set threshold value priming stops Pump Menu Sanitizer NOTE Default setting shown in bold 1100mV Range 70 to 2900 mV Stero SU L Stero SG Stero SU H Manual prime for detergent pump If chemical sensor value is below set threshold value priming stops Detergent NOTE Default setting shown in bold 1100mV 70 to 2900 mV Stero SU L Stero SG Stero SU H Manual prime for rinse aid pump If chemi...

Page 27: ...pad 2 Enter SERVICE MENU 3 Enter Service code 1001 EDIT PARAMETERS Parameter Name Cold Units Stero SU L Glass Unit Stero SG Hot Units Stero SU H Description Possible Values Default Values Detergent Pump Stero SU L Stero SG Stero SU H Detergent pump operation Disabled Enabled Enabled Rinse Aid Pump Stero SU L Stero SG Stero SU H Rinse Aid pump operation Disabled Enabled Enabled SG SU L SU H DISHWAS...

Page 28: ...here will be no extra message indicating a low temperature event Disabled Enabled Disabled Add Chem Alerts Stero SU L Stero SG Stero SU H Disables or enables an audible and visual alert if chemical is not being detected Disabled Visual Audio and Visual Audio and Visual End Cycle Audio Alert Stero SU L Stero SG Stero SU H Disables or enables an audible and visual alert if chemical is not being dete...

Page 29: ...me Cold Units Stero SU L Glass Unit Stero SG Hot Units Stero SU H Description Exit Menu Stero SU L Stero SG Stero SU H Exits menu TESTING SANITIZER BLEACH CONCENTRATION P P M NOTE If servicing a new machine or a machine that has run out of sanitizer and a new bottle is being installed it may be necessary to prime the pump Refer to Prime Pumps in SOAP PROGRAMMING 7627 1 Be sure rack in dishwasher i...

Page 30: ...ng the heat up stages of the fill cycle press the hidden key between ENTER and POWER buttons 2 Bypass fill cycle as necessary 10K OHM THERMISTOR TEST BOOSTER 3QTM SUMP 1QTM NOTE Surface mounted thermistor 1 Determine temperature of water 2 Disconnect thermistor leads 3 Determine resistance of thermistor 4 Compare resistance to chart Thermistor Temperature Resistance Chart 70 F 11 9kΩ 130 F 3 0kΩ 1...

Page 31: ...ower to the machine and follow lockout tagout procedures 1 Remove left and right panels as necessary 2 Close door 3 Roller should be positioned below cam to hold the door in place Fig 47 A If door is not held closed loosen lock nut and turn screw clockwise B If door is hard to open loosen lock nut and turn screw counterclockwise C Tighten lock nut 4 Open door a few inches until the roller is posit...

Page 32: ...eading to SUMP HEATER TEST SPECIFICATIONS BOOSTER HEATER TEST Certain procedures in this section require electrical test or measurements while power is applied to the machine Exercise extreme caution at all times and follow Arc Flash procedures If test points are not easily accessible disconnect power and follow Lockout Tagout procedures attach test equipment and reapply power to test NOTE This te...

Page 33: ...r leads 3 Determine resistance of thermistor 4 Compare resistance to chart Thermistor Temperature Resistance Chart 70 F 120kΩ 130 F 28kΩ 190 F 8 2kΩ 80 F 91kΩ 140 F 22 5kΩ 200 F 6 9kΩ 90 F 72kΩ 150 F 18kΩ 210 F 5 8kΩ 100 F 55kΩ 160 F 14 5kΩ 250 F 2 9kΩ 110 F 44kΩ 170 F 12kΩ 290 F 1 6kΩ 120 F 34 5kΩ 180 F 10kΩ SG SU L SU H DISHWASHERS SERVICE PROCEDURES AND ADJUSTMENTS Page 33 of 59 F45577 1215 ...

Page 34: ...se and 3 wire units only Relay 1CR Controls power to sump heater 1HTR Sump Heater 1HTR Heats water in sump 1TAS 2TAS Sump high limit protection 1PRS Water Level Sensor Supplies mV reading for water level in sump Acceptable range 500 850 mV Contactor 1CON Controls power to booster heater SU H only Booster Heater 2HTR Heats water in booster for hot rinse cycles SU H only Booster Thermistor 3QTM Boos...

Page 35: ...ects presence of detergent in tube 2CHS Detects presence of rinse aid in tube 3CHS Detects presence of sanitizer in tube COMPONENT LAYOUT NOTE SU SG series shown below Fig 49 NUMBER DESCRIPTION ELECTRICAL CALLOUT 1 Booster Overtemp Thermostat Hot unit only SU H 3TAS 4TAS 2 Wash Pump Motor 1MTR 3 Booster Heat Contactor Hot unit only SU L Terminal Block COLD units only SU L SG 1CON 1TB SG SU L SU H ...

Page 36: ...R 8 Detergent Pump 5MTR 9 Rinse Pump 2MTR 10 Fill Valve 1SOL 11 Booster Heater Hot unit only SU H 2HTR 12 Booster Water Level Air Trap Hot unit only SU H 13 Booster Temperature Sensor Hot unit only SU H 3QTM 14 Booster Water Level Air Trap COLD units only SU L SG Fig 50 SG SU L SU H DISHWASHERS ELECTRICAL OPERATION F45577 1215 Page 36 of 59 ...

Page 37: ... control board Fig 51 CONTROL BOARD LEDs Designation Function Color D1 Sump Water Level Green D2 Booster Water Level Green D3 Run Green D4 12VDC Green D5 5VDC Green D6 3 3VDC Green D52 Detergent Pump ON Red D53 Rinse Aid Pump ON Red D54 Sanitizer Pump ON Red D55 Door Switch Closed Green D61 LED 2 Red D62 LED 1 Red D63 LED 0 Red D64 Sanitizer Sensor ON Chemical Detected Red SG SU L SU H DISHWASHERS...

Page 38: ... Red D78 Booster Relay ON Red D79 Reset Active Red D80 Standby Amber D84 Switched Power Relay ON Red CONTROL BOARD TEST POINTS Place unit in CONTROL PANEL SERVICE POSITION to access control board Line voltage test points cannot be tested using control board ground use N for 120 volt machines and L3 N for 120 volt components of the 208 240 volt machines and L2 for line voltage components NOTE N O c...

Page 39: ...0VAC TP22 to L3 N Sump Heater K1 N O 120VAC 120VAC TP23 to L3 N Fill Valve K3 N O 120VAC 120VAC TP24 to L3 N Fill Valve K3 COM 120VAC 120VAC TP25 to L3 N Drain Pump K4 N O 120VAC 120VAC TP26 to L3 N Drain Pump K4 COM 120VAC 120VAC TP27 to L3 N Booster Relay K5 COM 120VAC 120VAC TP28 to L3 N Booster Relay K5 N O 120VAC 120VAC TP31 to Board GND Sump High Limit Status 11 12VDC 11 12VDC TP32 to Board ...

Page 40: ...ARD JUMPERS Fig 53 JUMPER COMPONENT ACTION J11 DO NOT USE N A J12 DETERGENT PUMP PUMP ON J13 RINSE AID PUMP PUMP ON J14 SANITIZER PUMP PUMP ON J15 WASH PUMP PUMP ON J16 RINSE PUMP PUMP ON J17 FILL VALVE VALVE ON J18 BOOSTER HEATER CONTACTOR BOOSTER HEATER ON J19 DRAIN PUMP PUMP ON J20 SUMP HEATER RELAY SUMP HEATER ON J21 SPARE RELAY 2 RELAY ON J22 SPARE RELAY 1 RELAY ON J27 SERVICE SERVICE DISPLAY...

Page 41: ...CONNECTION COMPONENT J1 5V 12V Supply J2 Sump and Booster Water Level Pressure Sensors J3 Not Used J4 120V Control Circuit J5 Wash Pump Normally Open J6 Wash Pump J8 RS485 J10 Door Switch J23 Chemical Sensors Pumps J24 Display J25 Keypad J29 Not Used J31 Not Used J33 Rinse Pump J34 Rinse Pump J36 Sump Booster Rinse Temperature Probes J37 Sump Booster High Limits SG SU L SU H DISHWASHERS ELECTRICAL...

Page 42: ... TEST POINTS Fig 55 POWER SUPPLY BOARD LEDs Designation Function Color D1 12VDC ON Green D3 5VDC ON Green POWER SUPPLY BOARD TEST POINTS Designation Function Voltage or Ground TP1 24V Unregulated 24V TP2 Common GND TP4 5VDC 4 9 5VDC TP5 12VDC 11 12VDC SG SU L SU H DISHWASHERS ELECTRICAL OPERATION F45577 1215 Page 42 of 59 ...

Page 43: ...gs to 40 45 inch pounds AVIS SERRER LES COSSES DE PUISSANCE À UN COUPLE DE 40 45 LB PO For continued protection against fire replace only with same type and rating fuse A VERTISSEMENT POUR UNE PROTECTION CONTINUE CONTRE LE FEU REMPLACER LE FUSIBLE UNIQUEMENT PAR UN FUSIBLE DE MÊME TYPE ET DE MÊME CALIBRE Electrical and grounding connections must comply with the applicable portions of the National ...

Page 44: ...Fig 56 SG SU L SU H DISHWASHERS ELECTRICAL OPERATION F45577 1215 Page 44 of 59 ...

Page 45: ...OTE Wiring diagrams are for SU H SUPPLY AMP NOTES 120 208 240 3W 60 1 H 40 CURRENT CARRYING NEUTRAL ALIMENTATION A REMARQUES 120 208 240 3W 60 1 H 40 NEUTRE SOUS TENSION SG SU L SU H DISHWASHERS ELECTRICAL OPERATION Page 45 of 59 F45577 1215 ...

Page 46: ... PO For continued protection against fire replace only with same type and rating fuse AVERTISSEMENT POUR UNE PROTECTION CONTINUE CONTRE LE FEU REMPLACER LE FUSIBLE UNIQUEMENT PAR UN FUSIBLE DE MÊME TYPE ET DE MÊME CALIBRE Electrical and grounding connection must comply with the applicable portions of the National Electrical Code ANSI NFPA 70 latest edition and or other local electrical code AVERTI...

Page 47: ...rd supplies 3 3 VDC processor circuit voltage 4 L1 to one side of K11 COM 1CR 2 K4 COM K3 COM 5 N to one side of 2MTR 1MTR 3MTR 1SOL 1CR 6 1CR 1 6 Door closed 7 Water supply at correct temperature and manual supply valve is on 8 1TAS and 2TAS closed Power Up Diagnostics 1 Power Button pushed 2 Machine type SU L displayed 3 Processor checks all sensors and probes for being within range of operation...

Page 48: ...les are met counter will reset to 300 when returning to step 2 5 Sump heater 1HTR energized when 1PRS senses 600 mV A K1 relay energizes B D75 turns on 6 Steps 2 5 repeat until 1PRS senses 840 mV 7 1MTR energized for 3 10 sec to prime wash arms A K6 energizes B D69 turns on 8 At end of 3 10 sec K1 cycles sump heater at 155 F 1QTM until wash button is pressed 9 READY displayed Wash and Drain Cycle ...

Page 49: ...s off 5 Dishwasher shuts off SU H SEQUENCE OF OPERATION NOTE Machine connected to Supply voltage Power Button has not been pushed NOTE Use SU H 3 WIRE 1PH WIRING DIAGRAM for sequence Conditions 120 208 240 60 1 1 120 VAC to 1T and 24VAC to Power Supply Board 2 Power Supply Board 5VDC to Control Board 3 Control Board supplies 3 3 VDC processor circuit voltage 4 L1 to one side of K11 COM 1CON L1 1CR...

Page 50: ...72 turns on for 10 sec NOTE If the cycle timer reaches 0 before 2PRS senses 500 mV the booster heater and rinse pump will be de energized NOTE Counter will reset before 0 if all variables are met 7 2PSR senses 500 mV 2MTR de energized 8 Sump heater energized when 1PRS senses 600 mV A K1 relay energizes B D75 turns on 9 Steps 2 8 repeat until 1PRS senses 840 mV 10 Tank probe senses 155 F A K1 relay...

Page 51: ...ized after 10 sec cycle A K7 de energizes B D72 turns off 6 1SOL energized to refill booster A K3 energized B D76 turns on 7 5 sec into fill READY displayed 8 2PRS senses 1400 mV 9 1SOL de energized A K3 de energized B D76 turns off 10 2HTR cycles on 3QTM at 180 F 11 Unit stays in Ready Mode until a wash cycle is initiated or power is turned off Power Down Sequence 1 Push Power Button 2 DRAIN disp...

Page 52: ...coming water temperature for 70 F rise on SU H HOT ONLY machines SG Cycle Timing Model Fill Preheat Wash Dwell Drain max Rinse Dwell SG Varies 56 sec 3 sec 15 sec 10 sec N A Maximum wash time may vary depending on operation voltage and incoming water temperature for 70 F rise on SG machines NOTE Timing chart for base units Unit timing may vary depending on customer settings SG SU L SU H DISHWASHER...

Page 53: ...ooster Relay K5 D78 will light and the Millivolt reading will still be increasing When the target value of 1400 mV is reached you may not see 1400 mV but it will trigger the control board to de energize Fill Relay K3 D76 will go out The millivolt reading remains somewhat steady You will still see the numbers move around due to the water still heating NOTE Toggle diagnostic screen can be accessed t...

Page 54: ... RINSE TEMP SENSOR Service Required Service Phone Number Error displayed if final rinse temperature probe is out of range The machine will continue to run cycles LOW WATER IN BOOSTER TIME OUT WITHIN ANY CYCLE FILL ERROR Service Required Service Phone Number Error displayed if the unit times out before the unit is completely filled The machine will not operate and will only allow power down DRAIN E...

Page 55: ...soils remain in dishwasher 1 Dishwasher not being cleaned thoroughly daily 2 Strainer plugged Unexpected results on dishes 1 Etching usually caused by any combination of high temperatures soft water soft glass or high alkaline washing solutions 2 Tarnishing avoid washing silver silver plates and pewter in chemical sanitizing machines 3 Pitting stainless steel may pit with lengthy contact of foods ...

Page 56: ...ILL NOT FILL OR NOT FILL HIGH ENOUGH Low temperature readings 1 Low water supply temperature 2 Rapid cycle use 3 Heavy ware load cools wash water 4 Incorrect line voltage 5 Booster heater or sump heater set low See SERVICE PROGRAMMING 8934 6 Temperature probes open or shorted 7 High limits open 8 Heater malfunction 9 1CR malfunction 10 1CON malfunction hot machines 11 Lime build up on heater 12 Co...

Page 57: ...tion 2 Switch Power Relay K11 malfunction 3 Rinse Motor Pump 2MTR inoperative 4 1PRS malfunction including pressure sensor tubing and water trap 5 Control Board malfunction 6 Booster Holding Tank Water Level Sensor 2PRS inoperative including pressure sensor tubing and water trap 7 Door Switch 1LS inoperative 8 1PRS and 2PRS are wired backwards Machine fills too high 1 Sump Water Level Sensor 1PRS ...

Page 58: ...uring power down 5 Control Board malfunction 6 Sump water level sensor 1PRS malfunction including pressure sensor tubing and water trap Some water occasionally drips out of rinse arms 1 This is normal due to expansion of water being heated in the booster tank Booster or holding tank takes too long to fill or won t fill 1 Low water pressure 2 Clogged hose strainer 3 No water flow 4 Fill valve malfu...

Page 59: ...ptom Possible Causes Noisy Wash Arm 1 Loose Wash Ring in upper wash arm lower wash arm or both 2 Verify wash arm sealing ring is not warn SG SU L SU H DISHWASHERS TROUBLESHOOTING Page 59 of 59 F45577 1215 ...

Page 60: ...ERIES UNDERCOUNTER DISHWASHERS ML 130273 SU H ML 130274 SU L ML 130259 SG Cold ML 130260 SG Cold A p r o d u c t o f T h e S t e r o C o m p a n y 1 7 5 8 C o r p o r a t e C i r c l e P e t a l u m a C A 9 5 4 7 6 FORM 43317 October 2015 ...

Page 61: ... 2 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 The Stero Company 201 ...

Page 62: ...OL PANEL AND OARDS 17 WASH ARM AND RINSE ARM ASSEM L 1 WASH PIPE ASSEM L 21 WASH PUMP AND DRAIN 23 RINSE PUMP 25 CHEMICAL PUMPS AND SENSORS 27 OOSTER ASSEM L HOT SU H 2 RECO9ER TAN ASSEM L COLD SU L SG 31 FILL AIR GAP SU H SU L 33 FILL AIR GAP SG SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS 3 F 43317 October 2015 ...

Page 63: ... 6 66 0 6 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 4 ...

Page 64: ... 2 PKLO TrXVV HG 2 1 0A 10 514 TrLP FroQt 1 17 0P 7 34 SeOI TDSSLQJ ScreZ 1 4 20 3 PKLO PDQ HG T Se TT 1 1 0P 7 351 LocNZDVKer 1 4 E terQDO SKDNeSrooI 1 1 0P 52 1 LXJ GroXQGLQJ 1 20 0A 10 53 rDcNet 1 21 0P 0 040 Foot AGMXVtDbOe 1 5 SST 4 22 0P 7 1 0 SeOI TDSSLQJ ScreZ 1 3 PKLO QGJ HG T Se 2 23 0P 7 5 CDS ScreZ 1 4 20 1 2 He HG SST 24 0P 52 457 OocN TerPLQDO 3 PoOe 1 25 0P 7 170 WDVKer SST 2 0P 7 5...

Page 65: ... 6 66 0 68 68 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 ...

Page 66: ...T Se TT 1 1 0P 7 351 LocNZDVKer 1 4 E terQDO SKDNeSrooI 1 20 0P 52 1 LXJ GroXQGLQJ 1 21 0A 10 53 rDcNet 1 22 0P 7 1 1 SeOI TDSSLQJ ScreZ 10 1 1 2 PKLO PDQ HG T Se SU H 2 23 0P 7 1 0 SeOI TDSSLQJ ScreZ 1 3 PKLO QGJ HG T Se SU L 2 24 0P 47 1 1 CoQtDctor 25 APS 3 PoOe SU H 1 25 0P 52 457 OocN TerPLQDO 3 PoOe SU L 1 2 0A 10 425 Foot LeYeOLQJ 4 27 0P 7 42 RLYQXt 5 1 1 4 2 0P 7 5 CDS ScreZ 1 4 20 1 2 He...

Page 67: ...7 1 66 0 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 ...

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Page 69: ... 225 66 0 6 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 10 ...

Page 70: ...oQQector SSrLQJ 1 15 0A 4 0 eDrLQJ Door 1 1 0A 4 0 eDrLQJ Door 1 17 0A 10 4 4 CoQQector SSrLQJ 1 1 0A 10 4 3 CDP Door PLYot 1 1 0P 7 5 7 RetDLQLQJ RLQJ 1 4 IQ SST 1 20 0A 10 4 4 CoQQector SSrLQJ 1 21 0P 7 5 7 RetDLQLQJ RLQJ 1 4 IQ SST 1 22 0P 7 5 7 RetDLQLQJ RLQJ 1 4 IQ SST 1 23 0P 57 5 5 O RLQJ 1 24 0A 10 4 5 RoOOer CDP 1 25 0A 0 4 2 SSrLQJ CoPSreVVLoQ 1 2 0P 7 13 NXt 5 1 1 He SST 1 27 0P 7 570 S...

Page 71: ... 225 66 0 68 68 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 12 ...

Page 72: ...1 SSrLQJ E teQVLoQ 1 17 0A 10 4 4 CoQQector SSrLQJ 1 1 0P 7 4 SKoXOGer oOt 1 1 0A 4 0 eDrLQJ Door 1 20 0A 4 0 eDrLQJ Door 1 21 0P 7 4 SKoXOGer oOt 1 22 0A 10 4 4 CoQQector SSrLQJ 1 23 0A 0 4 1 SSrLQJ E teQVLoQ 1 24 0A 10 500 StoS Door LH 1 25 0A 10 4 3 CDP Door PLYot 1 2 0P 7 5 7 RetDLQLQJ RLQJ 1 4 IQ SST 1 27 0P 7 571 CDS ScreZ 10 32 7 1 He SocNet HG SST 2 2 0A 10 4 4 CoQQector SSrLQJ 1 2 0P 7 5 ...

Page 73: ... 21752 3 1 1 2 5 6 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 14 ...

Page 74: ...S NXt 1 4 20 He SST 2 1 0A 10 443 MoXQt rDce FroQt 1 17 0P 42 50 M ODr DrrLer 1 1 0P 42 52 eySDG MePbrDQe 1 1 0P 42 503 M ODr DLVSOD 1 20 0A 10 445 COLS oDrG 4 21 0A 10 4 1 rDcNet ReeG SZLtcK 1 22 0 10 3 7 SZLtcK AVV Door 1 23 0P 7 34 SeOI TDSSLQJ ScreZ 1 4 20 3 PKLO PDQ HG T Se TT 2 24 0P 7 1 WDVKer SST 2 25 0P 7 554 XVKLQJ SQDS 1 2 0P 45 475 HDrQeVV CoQtroO 12 9 CoQtroO SLJQDO IroP CoQtroO oDrG ...

Page 75: ... 6 50 1 5 16 50 66 0 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 1 ...

Page 76: ...LQJ ScreZ 2 0A 10 45 ArP RLQVe 1 0 10 40 RLQVe ArP AVV IQcOV ItePV 5 tKrX 1 10 0 10 40 RLQVe ArP AVV IQcOV ItePV 11 tKrX 15 1 11 0A 10 45 ArP RLQVe 1 12 0P 7 572 SeOI TDSSLQJ ScreZ 2 13 0P 57 4 7 GDVeNt RLQVe ArP 1 14 0 10 4 DVe RLQVe ArP 1 15 0A 10 401 WDVK ArP AVV IQcOV ItePV 1 17 1 1 1 0A 10 400 ArP WDVK 1 17 0P 7 573 SeOI TDSSLQJ ScreZ 10 1 3 PKLO PDQ HG T Se 2 1 0A 10 45 HXb WDVK ArP 1 SG SU ...

Page 77: ... 6 3 3 66 0 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 1 ...

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Page 79: ... 6 3803 1 5 1 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 20 ...

Page 80: ...0 He SST 1 13 0P 41 4 4 CDSDcLtor 120 9 0 H 1 PK 1 14 0P 41 4 3 CDSDcLtor 20 240 9 50 0 H 1 PK 1 15 0P 41 4 1 PXPS DrDLQ 0 H 1 1 0P 41 4 2 PXPS DrDLQ 50 H 1 17 0P 41 4 PXPS AVV WDVK 120 9 0 H 1 PK IQcOV ItePV 1 2 3 13 15 1 1 0P 41 4 7 PXPS AVV WDVK 20 240 9 0 H 1 PK IQcOV ItePV 1 2 3 14 15 1 1 0P 41 4 PXPS AVV WDVK 20 240 9 50 H 1 PK 1 20 0A 10 3 3 CODPS HoVe 1 21 0P 375 HoVe DrDLQ 4 IQ 1 22 0P 0 ...

Page 81: ...5 16 3803 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 22 ...

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Page 83: ... 0 38036 1 6 16256 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 24 ...

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Page 85: ... 2267 5 66 0 27 68 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 2 ...

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Page 87: ...5 29 5 7 1 66 0 2 68 6 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 2 ...

Page 88: ... 0P 4 432 ooVter RecoYer 1 3 0P 7 5 2 FLttLQJ TXbe 1 4 1 4 0P 537 Lt TXbLQJ IQcOV IteP 5 CXt to 33 IQ 1 5 0P 3 2 CODPS SSrLQJ ActLoQ HoVe 2 0A 10 501 TrDS ALr 1 7 0P 7 143 StoS NXt 1 4 20 He SST 2 0P 57 5 4 O RLQJ 1 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS 2 F 43317 October 2015 ...

Page 89: ... 5 3 68 68 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 30 ...

Page 90: ...r CKePLcDO SU L 1 0P 411 HoVe 3 1 25 IQ LJ HoVe 3 1 IQ LJ AR 10 0P 414 HoVe 3 25 IQ LJ AR 11 0P 3 4 TXbLQJ COeDr 17 5 IQ AR 12 0P 412 HoVe 3 IQ LJ SU H AR 13 0P 412 HoVe 3 IQ LJ SU L AR 14 0P 7 4 2 WDVKer ALr GDS 1 15 0A 10 3 3 NXt AGDSter 1 1 0A 10 3 5 CODPS 17 0A 10 3 ReVtrLctor FOoZ 1 1 0P 41 HoVe 3 17 75 IQ LJ 1 1 0P 413 HoVe 3 3 5 IQ LJ 1 20 0A 10 3 5 CODPS 1 SG SU SERIES UNDERCOUNTER DISHWAS...

Page 91: ... 5 3 6 SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS F 43317 October 2015 32 ...

Page 92: ...Ster CKePLcDO 1 5 0A 10 43 AGDSter CKePLcDO CoOG 1 0P 3 4 TXbLQJ COeDr 17 5 IQ AR 7 0P 412 HoVe 3 IQ LJ AR 0P 411 HoVe 3 1 25 IQ LJ HoVe 3 1 IQ LJ AR 0P 41 HoVe 3 2 IQ LJ AR 10 0P 7 4 2 WDVKer ALr GDS 2 11 0A 10 3 3 NXt AGDSter 2 12 0P 410 HoVe 3 23 2 IQ LJ AR SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS 33 F 43317 October 2015 ...

Page 93: ...SG SU SERIES UNDERCOUNTER DISHWASHERS REPLACEMENT PARTS FORM 43317 OCTO ER 2015 PRINTED IN U S A ...

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