Troubleshooting Washer-Extractor Cabinet Hardmount Refer to Page 8 for Model Numbers CHM1772C www.comlaundry.com Part No.
Table of Contents Safety Information.............................................................................. Explanation of Safety Messages........................................................... General Safety Precautions................................................................... Important Safety Instructions ............................................................... Safety Decals ........................................................................................
Safety Information Explanation of Safety Messages General Safety Precautions Throughout this manual and on machine decals, you will find precautionary statements (“DANGER,” “WARNING,” and “CAUTION”) followed by specific instructions. These precautions are intended for the personal safety of the operator, user, servicer, and those maintaining the machine. In the interest of safety, some general precautions relating to the operation of this machine follow.
Safety Information 6. Do not allow children to play on or in a washer. Close supervision of children is necessary when the washer is used near children. WARNING If you or an unqualified person perform service on your product, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.
Safety Information 20. If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer or its service agent. 21. Be sure that water connections have a shut-off valve and that fill hose connections are tight. CLOSE the shut-off valves at the end of each wash day. 22. The loading door MUST BE CLOSED any time the washer is to fill, tumble or spin. DO NOT bypass the loading door switch and permit the washer to operate with the loading door open. 23.
Safety Information Safety Decals Operator Safety Safety decals appear at crucial locations on the machine. Failure to maintain legible safety decals could result in injury to the operator or service technician. To provide personal safety and keep the machine in proper working order, follow all maintenance and safety procedures presented in this manual. If questions regarding safety arise, contact the manufacturer immediately. Use manufacturer-authorized spare parts to avoid safety hazards.
Introduction Customer Service Alliance Laundry Systems is not responsible for personal injury or property damage resulting from improper service. Review all service information before beginning repairs. If literature or replacement parts are required, contact the source from whom the machine was purchased or contact Alliance Laundry Systems at (920) 748-3950 for the name of the nearest authorized parts distributor.
Introduction Model Identification Information in this manual is applicable to these washers.
Theory of Operation Starting the Machine Drain The door lock will not allow a cycle to be started until the door has been closed. Cabinet Hardmount washer-extractors use a normally open gravity-type drain system. No pump is used. When the drain valve opens, the perforated basket allows water to drain from it. Fill The operator selects a cycle and starts the machine. Water enters the machine through water valves that are controlled by the microcomputer.
Troubleshooting WARNING To reduce the risk of electrical shock, fire, explosion, serious injury or death: Disconnect electrical power to the washer-extractor before servicing it. Close the gas shut-off valve to the washer-extractor (when applicable) before servicing it. Never start the washer-extractor with any guards/panels removed. Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the washer-extractor is properly grounded.
Troubleshooting 1. Machine Does Not Start When Control Reads “Press Start” Machine does not start when control reads “Press Start” and Start Button is pressed A Is there 5VDC between H6 -3 and H6-6 on the AP2 Control Logic Board when Start Button is pressed? Yes Start switch circuit is open. Inspect wiring and switch, repair/replace as necessary. No A Is there 5VDC between H6 -3 and H6-6 on the AP2 Control Logic Board when Start Button is released? No Start switch circuit is functioning properly.
Troubleshooting Machine Does Not Start When Control Reads “Press Start” A B CHM505S CHM505S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 2. “dOOr” Displayed at Startup or When Vend Satisfied “dOOr” Displayed at Startup or When Vend Satisfied No Is door handle fully engaged? Fully latch door. Yes No Is magnet present on door? Replace magnet. Yes No Is J15 plug fully engaged? Firmly seat plug. Yes Is there 24VDC between H6-1 and H6-5 on the AP1 Output Board? Yes No Replace AP1 Output Board. A Door circuit is open. Diagnose and repair circuit.
Troubleshooting “dOOr” Displayed at Startup or When Vend Satisfied A CHM504S CHM504 NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 3. Door Does Not Lock at Startup Door Does Not Lock at Startup No Is door handle fully engaged? Fully latch door. Yes Is the solenoid mechanically bound? Door circuit is open. Diagnose and repair circuit. Yes Replace/Adjust solenoid as neccsssary.
Troubleshooting Door Does Not Lock at Startup A A B CHM504S CHM504 NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 4. No Display No Display A B Is there power between F1 and F2 on AP1 Output Board? No Verify that voltage is present at all points shown in callout B. Refer to No Display Schematic. Yes A No Are F1 and F2 fuse elements intact? Replace blown fuse(s) and find out why fuse(s) blew. Yes C 1. Is there 200 - 240VAC from H8-1 to H8-2? 2. Is there 24VAC from J9-2 to J9-3? 3. Is there 24VAC from H1-1 to H1-3 on AP1 Output Board and the 5VDC LED lit? 4.
Troubleshooting Please see following 2 pages for wiring diagram information.
Troubleshooting No Display (Sheet 1 of 2) B A CHM509S CHM509S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting No Display (Sheet 2 of 2) D C CHM506S CHM506S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 5. Machine Does Not Fill with Water Machine Does Not Fill With Water. No Is water turned on? Turn water on. Yes No Is there a fill step programmed? Program a fill step. Yes Yes Are fill valve inlet screens plugged? No Clean valve inlet screens and retest. A No Is the J30 plug fully inserted? Fully insert J30 plug.
Troubleshooting Machine Does Not Fill with Water B C A CHM509S CHM509S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 6. Abnormal Operation Abnormal Operation (water level, coast time, etc) A Is the capacity jumper configuration at H14 on the AP1 Output Board incorrect? Yes Use capacity information on schematic to select correct jumper. Refer to Abnormal Conditions Schematic. No Check pressure hose connections to: -Empty level pressure switch. -Pressure transducer on AP1 output board. -Three connections on plastic “T”. No Connect the pressure hoses.
Troubleshooting Abnormal Operation CHM510S CHM510S A NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 7. Door Fails to Unlock at End of the Cycle Door Fails to Unlock at End of the Cycle Yes Is the solenoid mechanically bound? Replace/adjust solenoid as necessary No B A Yes Is there continuity through low level pressure switch? Unless the machine is rotating, the control should open the door. No Is there water in the machine? Yes Troubleshoot the drain. No Troubleshoot the AP1 Output Board.
Troubleshooting Door Fails to Unlock at End of fhe Cycle A B CHM504S CHM504S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 8. Excessive Cycle Time Excessive Cycle Time Is water passing through the drain during fill? Yes Repair/replace drain valve as necessary. No Is the machine slow to fill? Yes Check water pressure and/or check for clogged screens in fill hoses. No If equipped with heat is it taking too long to heat? Yes Troubleshoot heat output circuit.
Troubleshooting 9. No Outputs No Outputs A No Are fuses F3 and F4 intact? Replace fuse and determine cause for blown fuse. Yes B Are SQ1 (door closed) and SQ2 (door locked) closed? Verify that INTLCK LED and MAIN PWR LED are lit on AP1 Output Board. No Determine why SQ1 (door closed) and SQ2 (door locked) are not closing. Adjust switches as necessary. Yes A Is there 220VAC between fuses F1, F3 and F4 to F2? C Yes Check to see if 220V is present at outputs.
Troubleshooting No Outputs (Sheet 1 of 2) B C A C CHM506S CHM506S A C NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting No Outputs (Sheet 2 of 2) B CHM500S CHM50 NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 10. Excessive Vibration and/or Noise During Spin (Sheet 1 of 2) Excessive Vibration and/or Noise During Spin Is the load of proper size? No Add or remove items as needed to ensure load size is correct. Yes Does the wash load contain the proper mix of laundry items? No Add or remove items as needed to ensure proper mix of items (e.g. do not wash towels and sheets together).
Troubleshooting 10. Excessive Vibration and/or Noise During Spin (Sheet 2 of 2) continued from previous page Is the washerextractor grouted properly? No Properly grout washer-extractor. Refer to Installation Manual for specifications. Yes Is the washer-extractor anchored to a flat, level surface with the proper depth of concrete? No Remove and re-install washer-extractor correctly. Refer to Installation Manual for specifications.
Troubleshooting 11. No External Supplies No External Supplies A Is the ribbon cable between H10 on AP1 Output Board and RB1 on AP4 Auxiliary Output Supply Board connected and in good shape? No Re-connect ribbon cable or replace AP4 Auxillary Output Supply Board as necessary. Yes A Ensure external supply wiring is correct. Refer to the No External Supplies Schematic.
Troubleshooting No External Supplies CHM508S A NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 12. Machine Powers Up in Factory Test Mode Machine Powers Up in Factory Test Mode A Is jumper present at J23? B Yes Remove Jumper and move to J28-2 and J28-1. No Cycle Power. If control powers up in Factory Test Mode, replace AP2 Control Logic Board.
Troubleshooting Please see following 2 pages for wiring diagram information.
Troubleshooting Machine Powers Up in Factory Test Mode (Sheet 1 of 2) A CHM505S CHM505S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting Machine Powers Up in Factory Test Mode (Sheet 2 of 2) B CHM509S CHM509S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 13. Machine Fills at Wrong Temperature Machine Fills at Wrong Temperature No Are both hot and cold fill valves on? Turn water valves on. Yes No Are filter screens in fill hoses clear? Clean/replace filter screens as necessary. Yes Check voltage at fill valves. Make sure correct water temperature connected to correct valve (i.e. hose connected to hot water valve to hot water inlet, hose connected to cold water valve to cold water inlet).
Troubleshooting Machine Fills at Wrong Temperature A CHM506S CHM506S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 14. No Rotation with Drive Fault (80 Pound Models Only) No Rotation with Drive Fault (*C80 only) Is there an active fault on the inverter drive? No Refer to “No Rotation Without Drive Fault (80 Pound Models only)” flowchart. Yes Determine what the fault is and act accordingly. Refer to Inverter Drive Supplement.
Troubleshooting 15. No Rotation without Drive Fault (80 Pound Models Only) No Rotation without Drive Fault (*C80 only) Yes Is there an active fault on the inverter drive? Refer to Inverter Drive Supplement. Refer to “No Rotation with Drive Fault” flowchart. No Yes Is the belt off the pulley or is the belt broken? Replace belt. No Yes Is the motor turning? Check that pulleys are engaged on shafts.
Troubleshooting No Rotation without Drive Fault (80 Pound Models Only) B CHM509S CHM509S A NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 16. No Basket Rotation (F-speed Models) No Basket Rotation (Fixed-speed Models) Is the belt(s) intact and on the pulley? No Replace belt(s). Yes Yes Is the motor turning? Ensure pulleys are properly attached to shafts. Yes No No Are the contactors operating? Yes No Is there proper voltage at L1, L2 and L3 at the line side of the contactor? Repair/replace contactor as necessary. Is there voltage present at contactor coil? 1. Check J16 connection. 2.
Troubleshooting 17. No Extract (F-speed Models) No Extract (F-speed Models) Is there an extract step programmed? No Add/edit extract step in programming. Yes Yes Is there an active fault on the drive? Refer to “No Rotation with Active Fault” flowchart. No Is the correct voltage present at the drive terminals R/L1, S/L2 and T/L3? No Correct voltage at the drive. Yes A Are any of the drive output LEDs lit (RUN, REV, SPD1, SP2 or SPD3) on the AP1 Output Board? No Check H13 and J16.
Troubleshooting No Extract (F-speed Models) A CHM512S NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 18. No Extract (2 Speed Models) No Extract (2 Speed Models) Is there an extract step programmed? No Add/edit extract step in programming. Yes Is the spin contactor pulling in? Yes With the spin contactor pulled in, is there voltage on L1 - L3 and T1 - T3? No No If voltage is present on L1 - L3 but not on T1 - T3, replace contactor. A Is there 220VAC between H5-3 and H55?. If voltage is present on L1 - L3 and T1 - T3 on contactor, check motor and wiring to motor.
Troubleshooting No Extract (2 Speed Models) A CHM508S C NOTE: Refer to the wiring diagram supplied with your machine.
Troubleshooting 19. Heat Error (Machines with Auxillary Heat Only) Heat Error (Machines with Auxillary Heat Only) Is heat enabled in programming? No Enable heat in programming. Yes Is the DIP Switch 2 set to on? No Turn DIP Switch 2 on and cycle machine power. Yes Is there water in the machine? No Refer to “Machine Does Not Fill with Water” flowchart. Yes Is there 220V at H7-2 and H7-5 when the heater output is on? No Refer to “No Outputs” flowchart. Yes For Steam Machines: 1.
Troubleshooting 20. Can’t Access Programming Can’t Access Programming A Is there alternately 5VDC and less than 1VDC at H3-11 to H3-2 when access panel switch is operated? Yes Replace AP2 Control Logic Board. No B Inspect wiring and switch for proper function. Repair/replace either as necessary.
Troubleshooting Can’t Access Programming A B CHM505S CHM505S NOTE: Refer to the wiring diagram supplied with your machine.
