Hudson-Dryer TRAINING MANUAL

Hudson-Dryer TRAINING MANUAL
BASIC Model : DV5471 DV456EWHDWR/AA DV456EWHDSU/AA DV400EWHDWR/AA 생활가전(사) 세탁기 개발 그룹 Drum Lab.

Product Introduction ….3-6 Changed Part List ….7-10
CONTENTS Product Introduction ….3-6 Changed Part List ….7-10 Instruction of Function ….11-17 Test Mode & Error Check ….18-24 Disassembly and Reassembly….25-46 PCB Diagram….47-50 Wiring Diagram….51-52 Schematic Diagram….53-54 Reference Information….55-65

1.Product Introduction Main Feature Sub. Feature 1-1. Concept
▶ Extra-Capacity [7.3 cu.ft. (DV456)] ▶ Energy Saving [3.09pounds/kWh] ▶ Time Saving [Normal Course: 45 min] Sub. Feature ▶ Fuzzy Algorithm ▶ Easy Reversible Door ▶ 4-way Vent (electric model only)

1.Product Introduction 1-2. Specification Model Hudson[DV456]
Capacity (cu.ft. DOE) 7.3 7.2 Power source Electric/Gas Drying Cycle 11 9 Heater 5,300 W(22,000Btu/hr) Drying Level 4 Temp Select 3 Display residue time Yes Drum light No Child lock Reversible Door Drum material EGI + Power Coating Size (WxDxH : Inch) 27x30x44.7 Performance Cycle time (AHAM 8lbs) 42min DOE Energy Factor 1.39 (kg/Kwh)-Elec 2.67 (lb/Kwh) -Gas Drying Noise 57 dBA Appearance Door trans·par·ency opaque Control Panel LED Display Color BLACK / SILVER SILVER

1.Product Introduction 1-3. Product Dimension Dimension Inches (cm)
Height 43.86” (111.4) Width 27” (68.6) Depth With Door Open 90 Degrees 49.80” (126.5) Depth 29.96” (76.1)

1. Product Introduction 1-4. Options Specifications Item Code QTY
Remarks Manual-Book DC A 1 DV456** DV422** DV400** Inlay-Holder Glass DC A

2. Changed Part List 2-1. Design ORCA (BASIC) Hudson Panel Display
Door

2. Changed Part List 2-2. Door Div ORCA (BASIC) Hudson Shape Assy Door
4 Angle Door(550mm x 540mm ) Comfortable Grip Big 4 Angle Door(650mm x 450mm )

2. Changed Part List 2-3. Panel Div ORCA (BASIC) Hudson Shape Assy
- Separated Jog Dial & Power Button, Start /Pause Button - All Option and Function buttons are constructed by separated parts. - All Option and Function buttons are constructed by separated parts.

2. Changed Part List 2-2. Design Div ORCA (BASIC) Hudson Shape Assy
PCB Sub Display type : LED Window Seg Function Button : 9 EA (DV5471) Function Button : 7 EA (DV5451) Display type : LED Window Seg Function Button : 10 EA (DV456) Display type : LED Window +88 Seg Function Button : 9 EA (DV422,400) DV5471 DV456 DV5451 DV422, DV400

3. Instruction of Function
3-1. Control Panel

3-1. Control Panel Cycle Selector To select a cycle, rotate the Cycle Selector dial to the desired cycle. The indicator light by the cycle name will illuminate. The Nomal, Heavy Duty, Perm Press, Bedding, Delicates, and Towels cycles are Sensor Dry cycles. Sensor Dry automatically senses the moisture in the load and shuts the dryer off when the load reaches the dryness level you have selected with the Dry Level Selection Button (see below). Normal – Use this cycle to dry loads of cotton, underwear, and linen. Heavy Duty – Use this cycle to dry heavy fabrics such as jeans, corduroys, or work clothes with high temperature heat. Perm Press– Dry wrinkle-free cottons, synthetic fabrics, knits, and permanent press fabrics automatically. Bedding – For bulky items such as blankets, sheets and comforters. Delicates – The Delicates cycle is designed to dry heat-sensitive items at a low drying temperature. Towels(DV456*) - To dry bath towels and similar items. Sanitize – Sanitizes garments by infusing high temperature heat deep into the fabric during the drying cycle. Use this course to keep your bedding and curtains clean through sanitization. Time Dry – Time Dry allows you to select the desired cycle time in minutes. Turn the Cycle Selector dial to Time Dry, and then press the Adjust Time up arrow to set the drying time. Press the arrow repeatedly to scroll through the time settings. Quick Dry - Provides a 30 minute drying cycle. Air Fluff(DV456*) – The Air Fluff cycle tumbles the load at room temperature air. Wrinkle Release – The Wrinkle Release cycle will release wrinkles from items that are clean, dry, and only slightly wrinkled, such as clothes from a crowded closet, suitcase or items that have been in the dryer too long after the cycle has ended. Wrinkle Release can be used with any tempeature selection. 1

3-1. Control Panel Digital Graphic Display The display window shows the estimated time remaining in the cycle after you have pressed the Start/Pause button. The estimated time remaining may fluctuates as the cycle progresses. The Drying light will illuminate and remain lit until the cycle is complete. When your dryer is in the cool-down phase, the Cooling light will illuminate. When your dryer is in the wrinkle prevent phase, the Wrinkle Prevent light will illuminate. When the cycle is complete, “End” will appear in the display panel until you push the Start/Pause button or the Power button. If your dryer is paused during a cycle, the indicator lights will blink until you press the Start/Pause button. Dry Level Selection Button To select the dry level in the Normal, Heavy Duty, or other Sensor Dry cycles, press the Dry Level button. An indicator light will illuminate next to the dryness level you selected. Press the button repeatedly to scroll through the settings. Larger or bulkier loads may require the Very Dry or More Dry setting for complete dryness. Damp Dry is designed to partially dry items. Use for items that lay flat or hang to dry. 2 3

3-1. Control Panel Temp Selection Button To select the temperature for the load, press the Temp button. An indicator light will illuminate next to the temperature you selected. Press the button repeatedly to scroll through the settings. High – For sturdy cottons or those labeled Tumble Dry. Medium – For permanent press, synthetics, lightweight cottons, or items labeled Tumble Dry Medium. Low – For heat sensitive items labeled Tumble Dry Low or Tumble Dry Warm. Extra Low(DV456*) – Provides the lowest heated drying temperature possible. Time Selection When using Manual Dry cycles, you can adjust the drying time by pressing the time selection button. During the Sensory Dry cycle, the time light indicator is off because exact drying times are determined by fluctuating humidity levels. 4 5

3-1. Control Panel Select Cycle Option Adjust Time – You can add or subtract time from the automatically set times in the Wrinkle Release cycle and the Manual Dry cycles (Time Dry, Quick Dry, or Air Fluff cycles.) To add or subtract time from the cycle, press the Adjust Time arrow pad up or down until the desired time is displayed. Wrinkle Prevent -Wrinkle Prevent provides approximately 180 minutes of intermittent tumbling in unheated air at the end of the cycle to reduce wrinkling. Press the Wrinkle Prevent button to activate this feature. The indicator light above the pad will illuminate when you select Wrinkle Prevent. The load is dry and you can remove it at any time during the Wrinkle Prevent cycle. Mixed Load Bell(DV456*) - This is an alarm that notifies you when the average dry level of a mixed load with various types of cloth is damp dry (80 % dried). When this level is reached, an alarm sounds for five (5) seconds. After the alarm sounds, the dryer will continue to run until you turn it off or the clothes reach the level of dryness you selected at the start of the cycle. This function can only be selected in the Sensor Dry course, and the dry level can only be selected from among Normal Dry, More Dry, and Very Dry. SmartCare(DV456*) - Use this function to check if the Dryer is out of order using your smart phone when the Dryer malfunctions. This function is set if you press and hold the Mixed Load Bell key for 3 seconds within 10 seconds of turning the power on or when an error occurs. 6

3-1. Control Panel Start/Pause Selection Button Press to pause and restart programs. My Cycle Choose your favorite cycle including cycle, temp, dry level option, etc. Power Button Press once to turn your dryer on, Press again to turn it off. If you turn your dryer on and do not touch any buttons for 10 minutes, the power automatically turns off. 7 8 9

Setting/Releasing Child Lock Details 3. Instruction of Function
Prevents children from playing with your dryer. Setting/Releasing If you want to set or release the Child Lock, press the Temp. and Time buttons simultaneously for 3 seconds. Child Lock Details - You can turn Child Lock on while your dryer is running. - Once you turn Child Lock on, no button, except for the Power button, will respond until you turn off the Child Lock function. - The Child Lock indicator will be lit. - If you have not turnd off Child Lock, and then turned the dryer off and on, the Child Lock function will still be on. To turn off Child Lock, follow the instructions above. - When other buttons, except for the Power button, do not respond, check the Child Lock indicator. If Child Lock is on, follow the instructions above to turn Child Lock off.

4. Test Mode & Error Check 4 -1. Service Mode How to Enter:
To enter Service Mode , press Wrinkle Prevent + Temp. Keys 3 seconds in normal mode until it sends out a beeping sound. If pressing Wrinkle Prevent + Temp. Keys in Service mode , it will return Normal mode. - Even though entering Service mode, the operating cycle will not be influenced .

4. Test Mode & Error Check 4-1-1. Touch Sensor Data Display Mode
How to Enter: With Power On pressing Wrinkle Prevent + Temp for 3 seconds This action will put the dryer into sensor bar touch data mode Dryer will display Sensor Bar data. Definition of Sensor Bar Touch Data Mode: - This mode is default mode of entering service mode

4. Test Mode & Error Check 4-1-2. Cycle Count Mode How to Enter:
Press the Wrinkle Prevent key in Service Mode. Definition of Sensor Bar Touch Data Mode: This mode is to bring up the total number of cycles that User have carried out.

4. Test Mode & Error Check 4-1-3. Software Revision Mode How to Enter:
At Service Mode, press Temp until it sends out a beeping sound ex) In case of "U105", U0 means major version “U1“ 05 means minor version "05“ - If press Temp key In Software Version Mode, it will return Service Mode. Definition of Software Version Mode: - It is to retrieve its software version

Wrinkle Prevent + Dry Level
4. Test Mode & Error Check Continuous Run Mode Power On State Wrinkle Prevent + Dry Level Continuous Run Mode (Normal User Mode) 7Sec How to enter: - Press Wrinkle Prevent+ Dry Level for 7 sec during Power On State (normal user mode). - Once in Continuous Run Mode, display “CC” for 1 sec and the number of Cycle for 1sec and the remaining time for 1 sec in turns. - The previous cycle will restart during Continuous Run Mode until the mode is deactivated. - During Continuous Run Mode, press Wrinkle Prevent + Dry Level for 7 seconds to go back to normal user mode.

4. Test Mode & Error Check 4-2. Error items and Diagnostic Codes
Error Display Trigger Action Taken tE Clogged Lint Screen Vent is restricted Check for : - Clean the screen or vent. - If the problem continues call for service. dE Running the dryer with door open Check for : - Close the door, and then restart. - If the problem continues call for service. dF Door is not closing properly Check for : - Call for service. bE2 Unit detects a button is being pressed for over 30secs or button is stuck. Check for : - Make sure a button is NOT being pressed continuously. Try restarting the cycle. If the problem continues call for service.

4. Test Mode & Error Check 4-2. Error items and Diagnostic Codes
Error Display Trigger Action Taken hE Invalid heating Temp Check for : - Call for service. Et EEPROM is not communicating properly Try restarting the cycle. If the problem continues call for service. FE Invalid power source Frequency

5. Disassembly & Reassembly
- Control Panel Removal 1. Disconnect the power supply to the unit. 2. Remove 6 screws from the Cover Panel. 3. Remove the Panel Control. 4. Remove Each Housing.

- Control Panel Removal 5. Remove the Knob. 6. Remove 4 screws from the GUIDE-PCB(M). ☞ Be careful of external scratch on the Panel Control.

- Door Removal 1. Unplug the power cord. 2. Remove the four hinge screws from the door 3. Remove the door by lifting it 4. Remove the two screws from the holder-lever, and then remove the cover-holder. 5. Assemble the holder-lever on the opposite side using the screws that were removed from the holder-lever-in Step 4. 6. Assemble the cover-holder on the opposite side.

- Door Removal 7. Remove the two cover-hinges. 8. Assemble the two cover-hinges on the opposite side. ☞ Use a flat head screwdriver(-) to remove the cover-holder’s cover-hinge. 9. Remove the 14 screws. ☞ Two screw (L) are longer than the other screws.

- Door Removal 10. Remove the holder-glass. 11. Exchange the positions of: : The cover-hinge and handle door : The holder-hinge and guider holder glass 12. Remove the Lever-Door, Cover-Lever (DV400 Only) and then install it on the opposite side. : DV456 & DV422 Refer Figure. 1 : DV400 Refer Figure. 2 ☞ Refer to the illustrations on the right to aid you in the assembly process. 13. Remove the cover-hole (P1). 14. Assemble the holder glass and then fasten the 14 screws that you removed in step 9. 15. Attach the cover-hole. ☞ A spare cover hole is in the assy manual.

- Door Removal 16. Install the door on the frame-front and then fasten the 4 screws that you removed in step 2. ☞ Check the positions of the screws you installed in the hinge door.

- Drum Front Removal 1. Disconnect the power supply to the unit. 2. Remove the Panel Control, the Main PCB, the Cover Top and the Frame Front. 3. Disconnect Interior Light wiring Harness. (DV456 Only) 4. Remove the four Bracket Drum Front 5 screws.

- Drum Front Removal 5. Disconnect the Moisture Sensor wiring Harness. 6. Remove the Drum Front.

- Drum Front Removal 7. Remove the filter. 8. Remove 2 screws from the Duct Oulet.

- Drum Front Removal 9. Remove the Duct Outlet. 10. Remove 3 screws from the Case Filter(F).

- Drum Front Removal 11. Remove 1 screw from the Case Filter(B). → Make sure the Filter does not get damaged by the Roller. 12. Remove the Case Filter(B/F).

- Drum Front Removal 13. Disconnect 2 Housing Sensor-Plate. 14. Remove 2 Sensor-Plate.

- Drum Back Removal 1. Disconnect the Power Supply to the unit. 2. Remove the Panel Control, the Main PCB, the Top. Cover, the Frame Front, the Drum Front and the Drum. 3. Remove 7 screws from the Drum Back. 4. Separate the wire in the Wire Holder.

- Drum Back Removal 5. Separate the Drum Back from the Frame. 6. Remove 4 screws from the Air Duct. → Be careful of the Bracket edge.

- Frame Front Removal 1. Disconnect the power supply to the unit. 2. Remove the Panel Control, the Main PCB and the Cover Top. 3. Remove 3 screws from the Frame Front. → When 1 screws of the top portion work because was added newly, keep in mind. 5. Remove 3 screws.

- Frame Front Removal 6. Remove the Door Switch Housing. → When reassemble Door Switch to Frame Front, be careful for insert direction. 7. Lift the Frame Front off the three tabs across the bottom and remove.

- Motor / Blower Assembly 1.After remove Drum, do the following. 2.Remove the 2 screws from Duct Connector. 3.Separate Duct Connector 4.Remove 1 Housing Motor 5.Remove 2 Housing Belt Cut Off Switch 6.Remove 3 Screw from Motor-Bracket

- Motor / Blower Assembly 8. Separate Assy Motor in Bottom Plate 9. Lock Blower Wheel with a screwdriver and separate the 14mm nut from Fan. 10. Remove Blower Fan. 11. Remove the three screws from Cover-Duct Fan. 12. Remove 2 Spring Plate Using a long-nose plier. 13. Remove 1 Screw Belt Cut Off Switch 14. Remove Holder Shaft and Roller-Idler. ■ After reassembly check the Motor work properly

- Front & Rear Roller (After removing Real Bulkhead) - After remove Holder-Shaft, separate each Roller. - Front & Rear Roller (After removing Real Bulkhead) 1. After separate Assy-Drum Back, do the following. 2. Remove 1 screws from Back-Cover. 3. Remove the Duct-Exhaust.

- Sensors (Thermostat, Thermistor, Radiant/Frame) 1. Remove each securing screws to remove each of the sensors. For differences between Gas and Electric, refer to 5-3. Component Check. - Heater Assembly 1. After separate Motor, Duct-Fan, do the following. 2. Remove 6 Housing Heater-Terminals 3. Remove 1 screw from Heater Die. 4. Separate Heater in Drum-Back.

- Drum Removal 1. Disconnect Power Supply to Unit 2. Remove the Panel Control, the Main PCB, the Top Cover, the Frame Front and the Drum Front. 3. Remove Belt 4. Lift Drum and Pull out - Carefully spread the cabinet as needed to get extra clearance. But, take care not to deform the cabinet.

- Burner Removal 1. After the knock-down to Motor/Assy-Motor, do the following. 2. Shut off gas supply. 3. Disconnect gas pipe. 4. Remove all the connectors. 5. Remove two screws (one at the front and the other one at the back) securing Burner to Frame. NOTE: The Igniter Bar is fragile. So, take care when removing Burner Assy. 6. Remove the two screws attaching the housing to Burner Bracket. 7. Remove Burner Assy from the unit.

6. PCB Diagram 6-1. Main PBA

6. PCB Diagram 6-2. Connector & Relay Terminal Description (Main PBA)
CN2 1.Communications Port(Rx) 2.Communications Port(Tx) 3.SUB RESET 4. 5V 5. DGND 6.12V CN3 1.5V 2.SO 3.SI 4.RESET 5.CLOCK 6.FLMDO 7.DGND 8.Empty Pin CN1 1.AC Power Port 2.Door Detection Sensor 3.Motor Switch Sensor ①→③ ⑥←① ⑧←① ⑦←① CN4 1.DGND 2.5V 3.TEMP Sensor1 4.Fabric Detection Sensor 5.Fabric Detection Sensor 6.5V 7. TEMP Sensor2 RY5 1.Motor Relay Switch 2.Motor Relay Switch CN6 1.SET GND RY7 1.Heater1 Relay Switch 2.Heater1 Relay Switch

6. PCB Diagram 6-3. Sub PBA Layout (The Principle Part) ② ① ③ Location
Part No. Function Description 1 CN11 Connect Main PBA Receives power from the Main PBA and provides a communications function. 2 CN1 Connect Lamp Drum light and Connection. 3 BZ1 BUZZER Generates sound when the Menu key is pressed, the Encoder operates and the menu is closed.

6. PCB Diagram 6-4. Connector & Relay Terminal Description (Sub PBA)
CN1 1. 12V 2. Empty Pin 3. DRUM LIGHT(-) CN11_MCU 1. Communications Port(Tx) 2. Communications Port(Rt) 3. Outputs the Reset Signal 4. 5V 5. GROUND 6. 12V 1 3 1 6

7. Wiring Diagram 7-1. Wiring Diagram(Electric Dryer)

7. Wiring Diagram 7-2. Wiring Diagram(GAS Dryer)

8. Schematic Diagram 8-1. Schematic Diagram of Main PBA

8. Schematic Diagram 8-2. Schematic Diagram of Sub PBA(LED)

Dryer is marking Pair Washer Capacity
9. Reference Information 9-1. Model name in the Hudson Dryer PJT Product Type Capacity Feature 1 Feature 2 Feature 3 Platform or Series Sub-Plat or Ver. Outside Color Buyer W F 4 7 9 D R V A / Feature Project Color Drum-Washer Ex : kg = kg = cuft = 50 Project Feature Table Project Code Table Color Code Table / : CBU U : SKD 1 : Service Ver. Buyer Code Drum-Combo Dryer Washer Dryer is marking Pair Washer Capacity 1st Feature (Drum/Dryer) Code ETC Prestiage 8 Washer (Pair Dryer) Best 6 Better 4 Good 2 Basic Code PJT HA Orca HD Hudson HF Hudson2 2nd Feature (Dryer) Code Vent-Elec E Vent-Gas G Condensing C Heat Pump (Inverter) H Hybrid Heat Pump Y Color Name Code Neat White WR ULTRA INOX SU 3rd Feature (Dryer) Code Vent Sensor/Steam/Wrinkle Prevent V Steam/Wrinkle Prevent T Wrinkle Prevent W

9. Reference Information
9-2. Motor Universal Parameter 부품명 CODE MAKER SPEC Resistance DC H Motor 뉴모텍 120V, 5A 1/3HP Mian : 3.35 Ω Sub : 3.05 Ω DOOR SWITCH DC B Dae sung 125V 10A 30mΩ LAMP DC F GOODS DC 3V, 45mA, 700Lux - HEATER DC A TUTCO 240V 5300W COIL HEATER 9.2~9.6Ω THERMOSTAT DC A TOD 250V 25A(126.6/98.9) DC A PESIC 250V25A 160℃ -35℃ DC A AC125/250V 25A 85℃ -35℃ THERMISTOR DC A JAMSTECH 25℃ 10KOHM -40~105℃ B=3945K 10㏀ POWER CORD DC G YUEHUA 125V 13A DC A 120V25A 230℃ open close MICRO S/W DECO 125V 16A HEATER-IGNITER DC A UNIQUE SPECTRONICX 120V, 40~400Ω 40~400Ω SENSOR-RADIANT DC A THERM-O-DISC 120V 5.75A 10RS, 12~20s open, 26~40s close VALVE-GAS DC A WHITE-RODGERS GD-PJT,3WAY,MAX 10BAR,NTR,120V/50/60Hz/INCH 1365Ω 560Ω 1325Ω DC A PERENNIAL CABLE SNOMA/66"/BLK/DRT-30,30A 120/240,CANADA,60HZ

9-3. Troubleshooting Problem Possible Cause & Corrective Action Will Not Start or Run • All connectors are plugged in correctly. • Dryer is plugged into the power outlet. • Check if house fuses or circuit breaker is blown. • Check if the door is closed properly (if it is open, “do” will light up). • Check if the rotary selector dial works well. • Check if Control Board is good. • Check if the belt is cut off or Belt Cut-off switch is initiated. • Check if Drive Motor is spinning properly. • Check motor winding resistance: 2.88ohms between pin #3 and 4, 3.5ohms between pin #4 and 5. Motor runs/ tumbler will not turn • Check if the belt is cut off. • Check if Idler Tension Spring is fatigued and get relaxed, pressing Belt S/W. • Check if Idler Pulley is jammed or stuck. Runs a few minutes and then stops • Lint built-up around Drive Motor. • Insufficient power. • Blower Impeller stuck in Blower Housing.

9-3. Troubleshooting Problem Possible Cause & Corrective Action Blown Fuses Tripped Circuit Breaker (Electric Model) • The amperage readings are at 240 volts. One line will be 24 amps and the other line will be 21amps. The neutral line will be at 3 amps. If the above amperages are present, then the house wiring, fuse box or circuit breaker could be suspicious (faulty). • Shorted heating element to housing. • Incorrect wiring or wire-short to ground. • Drive motor winding shorted to ground. (Gas Model) • During ignition, the dryer will draw 7 amps. With the burner ON, the dryer will draw 4.5 amps. If the dryer is drawing amperages roughly about, then the house wiring, fuse box or circuit breaker could be suspicious (faulty). • Igniter harness loose and shorted to base. • Incorrect wiring or wire shorted to ground. • Drive motor winding shorting to ground. No Heating (Motor Spinning) • Defective Heater (Open Circuit). • Hi-Limit trips easily or is open. • Regulating thermostat trips easily or is open. • Membrane Switch (Open – Centrifugal S/W). • Check Thermistor. • Check Sensor Bars

Possible Cause & Corrective Action The igniter does not glow.
9. Reference Information 9-3. Troubleshooting Problem Possible Cause & Corrective Action Will Not Dry Gas Model Poor Gas Ignition When the dryer is operated on a heat setting, the igniter should be energized and burner shall fire within 45 seconds at 120 VAC. The failure of a component in this system will usually be indicated by one of three symptoms: The igniter does not glow. If the igniter does not heat up, remove power and using an ohmmeter, check the following: • Open Radiant Sensor (Flame Sensor) • Open Igniter • Shorted Booster Coil • Open wiring • Bad Motor Switch (Centrifugal S/W, Neutral supply) • No power from control ( L1 supply)

9-3. Troubleshooting Problem Possible Cause & Corrective Action No gas ignition with the igniter glowing. If the igniter heats up but the main burner flame is not ignited, remove power and using an ohmmeter, check the following: • Open Secondary Coil • Open Holding Coil • Open wire harness • Stuck Radiant Sensor (Stuck closed) It dies after the ignition (gas). If a normal ignition takes place and after a short while the flame goes out, check for the following: • Radiant sensor contacts opening prematurely. • Weak gas valve coil may get open when being stressed by higher Temps. • Weak Hi-Limit • Poor venting • Bad drum rubber seal

Possible Cause & Corrective Action
9. Reference Information 9-3. Troubleshooting Problem Possible Cause & Corrective Action Insufficient Drying Too much wrinkle Rough texture Long drying time • Clean Lint Filter. • Remove any restriction in the exhaust system. • Too long Exhaust Pipe (extended) or too many elbows. • Insufficient air-intake. • Incorrect tumbler speed due to the slipping of Tumbler Belt. • Remove any restriction in Blower Impeller. • Overloaded Dryer. • Set the selection according to labels on the clothes. • Clothes containing too much water. Noise/Vibration • Thumping - Check for loose tumbler baffle, worn or misaligned rear tumbler rollers, eccentric tumbler or stepped weld-seam on tumbler. • Ticking - Check for loose wire harness or any restriction in Blower Wheel. • Scraping - Check if front or rear bulkhead Felt Seal is out of position or Tumbler Front Bearing is worn out. • Roaring - Check if Blower Wheel rubs on Blower Housing, or Motor Bearing is worn out. • Popping/Squealing - Check for belt slipping.

<Radiant Sensor>
9. Reference Information 9-4. Component Check Parts Image Description Value Thermistor Unplug connector and test from wire insertion side. Pin #2 and Pin #6 of CN6 10 77° F/25°C Door Switch Unplug connectors and test switch terminals. Door open terminals COM to NC Door open terminals COM to NO Door closed terminals COM to NC Door closed terminals COM to NO Infinity Less than 1 Ω Lamp Check across terminals DC12V Belt Switch Check across terminals switch closed Check across terminals switch open [Gas] [Electric] <Radiant Sensor> COM NO NC BELT CUT-OFF S/W 125V, 15A

Thermostat Cut Off 320°F/160°C, 25A
9. Reference Information 9-4. Component Check Parts Spec Description Value Thermostat 1 Thermostat Cut Off 185°F/85°C, 25A Unplug connector and measure its resistance Less than 1 Ω Thermostat 2 Hi Limit 260°F/127°C, 25A (Electric) 230°F/110°C, 25A (Gas) Thermostat 3 Thermostat Cut Off 320°F/160°C, 25A Heater 240V / 5300W Unplug connectors and test Heater terminals 10 Ω Thermostat 1 Gas Dryer Thermostat2

9-4. Component Check Parts Image Description Value Radiant Sensor (Gas) Unplug connectors and test sensor terminals. Closed Sensor Bars Unplug connector and measure its resistance. Pin #4 to Pin # 5 of CN6 Infinity dry load 190 Ω ± 10% wet load Motor Unplug harness connector and test motor circuits. Pin #4 and Pin #5 (Windings) Pin #1 and Pin #2 (Centrifugal switch) Refer to 5-2 wiring for differences between Electric & Gas 2 Ω Open Gas Valve Unplug connectors and test valve terminals (its numbering is from the front terminal.) Check across terminals #1 and #3 (Booster Coil). Check across terminals #1 and #2 (Holding Coil). Check across terminals #4 and #5 (Secondary Coil). 560 Ω 1365 Ω 1325 Ω

9-5. Q & A Q. What does it mean when chasing light appear in the display? A. The chasing lights appear in the display when Wrinkle Prevent is selected. This lets you know that the dryer is tumbling intermittently for 95 minutes with room temperature air after the cycle is complete to reducing wrinkling. The load is dry and can be removed at any time during Wrinkle Prevent. Q. Why is the estimated drying time so long? A. The initial estimated drying time will be longer because the dryer has not yet detected the amount of moisture in the load. After the dryer has been running for several minutes, a more accurate estimate will be displayed. Remember, the times are estimated. The actual drying time may be longer or shorter, depending on the load. Q. My dryer seems to run longer than I expect. Why? A. The dryer automatically senses the dryness level of load. Be careful to avoid overloading your dryer. For best drying results, avoid mixing heavy and lightweight items in the same load.

Hudson-Dryer TRAINING MANUAL

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