Fisher & Paykel Smartload DEGX1 User manual

517760B
DRYER
Models
DEGX1 & DGGX1
DEGX2 & DGGX2

Fisher & Paykel Appliances Ltd
Technical Publications
PO Box 58-732, Greenmount, Auckland
78 Springs Road, East Tamaki
New Zealand
Telephone: [phone]
Facsimile: 09 273 0656
Fisher & Paykel Appliances Inc
5900 Skylab Road, Huntington Beach
California, CA92647
USA
Telephone: [phone] (F&P),
888 396 2665 (DCS)
COPYRIGHT ãFISHER & PAYKEL APPLIANCES LTD 2004
2
MANUAL 517760B - JULY 2004 REPRINT: JANUARY 2006
The specifications and servicing procedures outlined in this manual are subject to change without
notice.
The latest version is indicated by the reprint date and replaces any earlier editions.

3
CONTENTS
1 SERVICING REQUIREMENTS.............................................................................................. 6
1.1 Health & Safety.............................................................................................................6
1.1.1 Electrical Safety ................................................................................................... 6
1.1.2 Electrostatic Discharge ........................................................................................ 6
1.1.3 Good Working Practices ...................................................................................... 6
1.1.4 Safety Test .......................................................................................................... 6
1.1.5 Sheet Metal Edges .............................................................................................. 6
1.1.6 Gas Leakage Test ............................................................................................... 6
1.2 Specialized Tools.......................................................................................................... 6
1.2.1 Fisher & Paykel Smart Tool ................................................................................. 6
2 MODEL INFORMATION........................................................................................................ 7
2.1 Model Number .............................................................................................................. 7
2.2 Serial Number...............................................................................................................7
3 TECHNICAL OVERVIEW ...................................................................................................... 8
3.1 Finish ............................................................................................................................ 8
3.2 Electrical Supply ...........................................................................................................8
3.3 Dimensions ...................................................................................................................8
3.4 Maximum Capacity (Full Load)...................................................................................... 8
3.5 Principles of Operation.................................................................................................. 9
1.1.1 Electronic Control ................................................................................................ 9
3.5.2 Loading................................................................................................................ 9
3.5.3 Lid Lock Control................................................................................................... 9
3.5.4 Lint Filter............................................................................................................ 10
3.5.5 Airflow................................................................................................................ 11
3.5.6 Temperature Control.......................................................................................... 12
3.5.7 Cool Down ......................................................................................................... 12
3.5.8 Drum Parts. ....................................................................................................... 12
3.5.9 Drum Control. .................................................................................................... 13
3.5.10 Drum Door Control............................................................................................. 14
3.5.11 Heater Control. .................................................................................................. 16
3.5.12 Thermostats (Electric)........................................................................................ 18
3.5.13 Auto Sensing ..................................................................................................... 19
3.5.14 Regulator Valve ................................................................................................. 19
3.5.15 Gas Flame Detector........................................................................................... 20
4 MAJOR COMPONENTS...................................................................................................... 21
4.1 Gas Igniter ..................................................................................................................21
4.2 Gas Regulator Valve................................................................................................... 21
4.3 Gas Flame Detector.................................................................................................... 21
4.4 Thermostat Cutout – Automatic Reset (Gas) .............................................................. 21
4.5 Thermostat Cutout – Manual Reset (Gas) .................................................................. 22
4.6 Element Assembly 240V 3.6 KW ............................................................................... 22
4.7 Element Assembly 240V 1.4KW ................................................................................. 22
4.8 Thermostat Cutout – Automatic Reset Upper (Electrical)............................................ 22
4.9 Thermostat Cutout – Automatic Reset Lower (Electrical)............................................ 23
4.10 Thermostat Cutout – Manual Reset (Electrical)........................................................... 23
4.11 Motor – 3 Phase 240W ............................................................................................... 23
4.12 Exhaust Temperature Sensor Loom ........................................................................... 23
4.13 Lid Lock ...................................................................................................................... 24
4.14 Motor Control Module.................................................................................................. 24
4.15 Sensor Module............................................................................................................ 24
4.16 Display Module ........................................................................................................... 24
5 DIAGNOSTICS ....................................................................................................................25
5.1 Overview.....................................................................................................................25
5.2 Fault Code Summary .................................................................................................. 26

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5.3 Diagnostic Mode .........................................................................................................32
5.3.1 Entering the Diagnostic Mode ............................................................................32
5.3.1.1 Last Fault.......................................................................................................32
5.3.1.2 Conductivity Contact Impedance ...................................................................32
5.3.2 Entering the Data Download Mode.....................................................................32
5.3.3 Entering the Showroom Mode............................................................................32
6 FAULT DIAGNOSTICS ........................................................................................................33
6.1 Problem - No Power....................................................................................................33
6.1.1 Check the Continuity of the Power Cord (Electric) .............................................33
6.1.2 Check the Continuity of the Main Harness (Electric) ..........................................33
6.1.3 Check the Continuity of the Power Cord (Gas)...................................................34
6.1.4 Check the Continuity of the Main Harness (Gas) ...............................................34
6.2 Problem - No Heat ......................................................................................................34
6.2.1 Check All Thermostats (Gas and Electric)..........................................................34
6.2.2 Check the Elements (Electric Only)....................................................................34
6.2.3 Check Voltage Across Elements (Electric Only).................................................35
6.2.4 Measure the Current Draw for Each Element (Electric Only)..............................35
6.2.5 Check the Gas Valve/Regulator (Gas Only).......................................................35
Primary Coil ................................................................................................................35
6.2.5.2 Secondary Coil ..............................................................................................35
6.2.6 Check the Flame Detector (Gas Only) ...............................................................36
6.2.7 Check the Igniter (Gas Only)..............................................................................36
6.2.8 Check the Exhaust Sensor (Gas and Electric) ...................................................36
6.2.9 Check For Leaks In Air Circuit............................................................................36
6.3 Problem – Drum Does Not Rotate...............................................................................36
6.3.1 Check for Fault Code. ........................................................................................36
6.3.2 Check the Integrity of the Belt. ...........................................................................36
6.3.3 Check the Motor Windings. ................................................................................36
6.4 Problem - Under Drying/Damp ....................................................................................37
6.4.1 Possible User Faults ..........................................................................................37
6.4.2 Possible Installation Faults.................................................................................37
6.4.3 Possible Maintenance Problems ........................................................................37
6.4.4 Check the Inlet and Outlet Duct Seals................................................................37
6.4.5 Check the Heating Circuits.................................................................................37
6.4.6 Check the Moisture Sensing Circuit ...................................................................37
6.5 Problem - Over Drying ................................................................................................37
6.5.1 Check the Moisture Sensing Circuit ...................................................................37
7 SERVICE PROCEDURES ...................................................................................................38
7.1 Removal of Lid ............................................................................................................38
7.2 Components in Console Area......................................................................................38
7.3 Removal of Display Module.........................................................................................38
7.4 Removal of Top Deck..................................................................................................39
7.4.1 If the top deck is to be removed for replacement: ..............................................39
7.4.2 If the top deck is to be removed to gain access to other components: ...............39
7.5 Removal of Lid Lock....................................................................................................39
7.6 Components Within Cabinet........................................................................................40
7.7 Removal of Front Cabinet Brackets.............................................................................40
7.8 Removal of Door Grabber Assembly...........................................................................40
7.9 Removal of Door Grabber Actuator .............................................................................41
7.10 Removal of Door Grabber ...........................................................................................42
7.11 Removal of Door Bracket ............................................................................................42
7.12 Removal of Drum Door ...............................................................................................42
7.13 Removal of Drum Door Buffers ...................................................................................43
7.14 Removal of Drum Door Key Bracket ...........................................................................43
7.15 Removal of Drum Door Scraper ..................................................................................43
7.16 Removal of Drum and Chassis Assembly ...................................................................44
7.17 Removal of Outlet Panel Assembly .............................................................................44
7.18 Removal of Outlet Duct Assembly...............................................................................45

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7.19 Removal of Outlet Duct Bearings................................................................................45
7.20 Removal of Outlet Duct Seal....................................................................................... 45
7.21 Removal of Exhaust Sensor........................................................................................ 46
7.22 Removal of Lint Collector Housing .............................................................................. 46
7.23 Removal of Conductivity Contacts .............................................................................. 46
7.24 Removal of Belt Tensioner.......................................................................................... 47
7.25 Removal of Inlet Panel Assembly................................................................................ 48
7.26 Removal of Inlet Duct Seal..........................................................................................48
7.27 Removal of Inlet Bearing Shaft ................................................................................... 49
7.28 Removal of Drum Inlet Bearing ................................................................................... 49
7.29 Removal of Belt .......................................................................................................... 49
7.30 Removal of Drum........................................................................................................ 49
7.31 Removal of Lint Filter Assembly.................................................................................. 50
7.32 Removal of Motor........................................................................................................ 50
7.33 Removal of Fan .......................................................................................................... 50
7.34 Removal of Fan Motor Housing .................................................................................. 51
7.35 Removal of Motor Control Module............................................................................... 51
7.36 Removal of Sensor Module......................................................................................... 51
7.37 Removal of Gas Igniter (Gas Models) ......................................................................... 52
7.38 Removal of Flame Detector (Gas Models) .................................................................. 52
7.39 Removal of Thermostats............................................................................................. 52
7.40 Removal of Gas Regulator Valve, Pipe and Burner Tube (Gas Models) ..................... 52
7.41 Removal of Elements (Electric Models)....................................................................... 53
7.42 Removal of Front Foot Bracket Assembly................................................................... 53
7.43 Removal of Rear Foot Bracket Assembly ................................................................... 54
8 WIRING DIAGRAMS ........................................................................................................... 56
8.1 U.S.A. Model (Electric)................................................................................................ 56
8.2 U.S.A. Model (Gas)..................................................................................................... 57
9 FAULT FINDING FLOW CHARTS....................................................................................... 58
9.1 No Power .................................................................................................................... 58
9.2 No Heat (Electric Models) ........................................................................................... 59
9.3 No Heat (Gas Models) ................................................................................................ 60
9.4 Drum Door Not Opening/Closing ................................................................................ 61
9.5 Drum Does Not Rotate................................................................................................ 62
9.6 Clothes Take Too Long to Dry .................................................................................... 63
Noisy64

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1 SERVICING REQUIREMENTS
1.1 Health & Safety
Note: When servicing the SmartLoad™electronic dryer, health and safety issues must be considered
at all times. Specific safety issues are listed below to remind service people of the health and safety
issues.
1.1.1 Electrical Safety
WARNING! TO AVOID ELECTRIC SHOCK!
Do not attempt to service this dryer without suitable training and qualifications.
Ensure the mains power has been disconnected before servicing any part of the dryer. If the power is
required to be on for electrical fault finding, or observing gas flame or checking operation, then
extreme care should be taken not to make contact with electrical components other than with testing
probes. Ensure the dryer is turned off when removing any electrical component or connection.
1.1.2 Electrostatic Discharge
Electronic components are prone to damage from electrostatic discharges. The electronic modules in
this product contain no user serviceable components and breaking seals to access internal
components of an electronic module may void the product warranty. Avoid contact with PCB edge
connectors when handling electronic modules.
1.1.3 Good Working Practices
Ensure the work areas are kept tidy and free of hazards while servicing the dryer. On completion of
the servicing, ensure the dryer and work areas are left clean and tidy.
1.1.4 Safety Test
On completion of any service carried out to the dryer, all safety tests as required by law must be
carried out.
1.1.5 Sheet Metal Edges
When working around cut sheet metal edges use appropriate gloves or protection to eliminate the
chance of receiving a laceration.
1.1.6 Gas Leakage Test
On completion of any service carried out on a gas dryer, all safety tests as required by law must be
carried out.
1.2 Specialized Tools
1.2.1 Fisher & Paykel Smart Tool
Fisher & Paykel have developed diagnostics software for use in a laptop computer or a handheld palm
computer. With this software, diagnostic data may be downloaded from the appliance to assist in
servicing.
Authorised service centres may download this software from the Fisher & Paykel web site.

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2 MODEL INFORMATION
The product serial plate is located on the upper rear of the cabinet and contains the following
information:
2.1 Model Number
The model number contains the following information:
DEG X 1
Series
Size
Feature Level
Heating Type (E = Electric, G = Gas)
Product Type (Dryer)
2.2 Serial Number
The serial number consists of three letters and six digits and contains the following information:
Example:
BEN123456
Sequential Serial Number
Manufacturing Plant Code
FISHERPAYKUL Code indicates month of manufacture
CUMBERLAND Code indicates year of manufacture
CUMBERLAND Code
Letter C U M B E R L A N D
Year 1234567890
FISHERPAYKUL Code
Letter F I SHERPAYKUL
Month123456789101112
Manufacturing Plant Code
A Laundry – Australia
F Refrigeration – New Zealand
M Range & Dishwasher
N Laundry – New Zealand
Q Refrigeration - Australia
In the example above, the appliance was manufactured in the fifth month of the fourth year (2004) at
the New Zealand Laundry plant.

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3 TECHNICAL OVERVIEW
3.1 Finish
Cabinet: Pre-paint (Polyester)
Touch-Up Paint: White #503086
Lid: ABS Co-injected, one piece
Console: ABS with Polycarbonate insert for control panel
Drum: Stainless steel grade 430T
Top Deck: Polypropylene
3.2 Electrical Supply
Operating Voltage Maximum Current
USA Electric 220/240V AC 60Hz 24 amps
USA Gas 110/120V AC 60Hz 6 amps
3.3 Dimensions
Height to lid
Open 55½ in - 56¾ in 1410mm – 1440 mm
Closed 36½ in - 37½ in 925 mm – 955 mm
Height to console 40¼ in - 41½ in 1020 mm – 1050 mm
Width 27 in 685 mm
Depth 27½ in 700 mm
Note: Exact height of the SmartLoad™dryer is dependent on how far the feet are inserted into the base
of the dryer.
Weight Packed 152 lbs (69kg)
Unpacked 134 lbs (61kg)
3.4 Maximum Capacity (Full Load)
Drum Volume 6.5 cubic feet (.184 cubic metres)

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3.5 Principles of Operation
1.1.1 Electronic Control
The 120V or 220/240V power supply is connected to the
motor control module which rectifies to DC for use by its
own controller and peripherals, and also for the sensor
and display module. The motor control module has an
optically isolated serial communications port to the
sensor module from which it receives commands for
operating the drum motor and the heater(s). The motor
control module does the actual control of those devices.
The sensor module is responsible for the overall control
of the dryer, including the input and output of all other
peripherals. The sensor module controls the lid lock and
the drum door actuator, senses the drum position and
speed, measures. the exhaust duct temperature through
the exhaust sensor and measures the dampness of the
clothes load via the sensor bars.
The algorithm for when the heaters are turned on and
off, and also for the speed and direction of the motor, is
implemented within the sensor module, but the switching of the elements or gas heater, and control of
the motor, is done by the motor control module in response to the commands from the sensor module.
When the mains power is first applied to or restored to the sensor module, the dryer will endeavour to
continue operating from when the power was lost. If mains power was lost during a drying cycle, it will
continue to dry to the same set dryness level, otherwise the machine will return to have the drum door
open and the lid unlocked.
The display module is a “Dumb” module and user interface that passes user settings to the sensor
module and displays information in the form of LED displays transmitted from the sensor module.
3.5.2 Loading
The dryer always stops with the drum door open. The user places the drying load into the drum,
closes the lid, pushes the Power button, selects the required cycle and presses the Start/Pause
button. The lid will lock, the drum will rotate and the door grabber will slide the drum door closed. The
door grabber will then move clear of the drum.
3.5.3 Lid Lock Control
SmartLoad™has a lock installed in the lid to provide added safety while the dryer is operating. It
ensures that the lid cannot be opened while the drum is rotating.
The lid lock is a mechanism driven by a DC solenoid and prevents the lid being opened when the drum
is rotating. If the lid lock mechanism is not engaged for any reason, including open circuit or short
circuit, a “Locked” is not assumed. If unable to lock after the user has requested a start, a User
Warning will be given.
The LID LOCKED LED (above the Start/Pause button) comes on when the lid is locked to tell the user
when they cannot open the lid.
§When the LID LOCKED LED is illuminated, the lid is locked and the lid cannot be opened.
§When the LID LOCKED LED is not illuminated, the lid is not locked and the lid can be opened.
§If the LID LOCKED LED is flashing, the lidlock is in the process of locking or unlocking, (i.e. while
the dryer coasts down or Start/Pause has been pressed). During this stage the lid cannot be
opened.
Sensor Module
Motor Control Module
Display Module

10
The lid must be closed before the drying cycle can start. If Start/Pause is pressed with the lid open,
the dryer will beep, signalling the lid needs to be closed. Once the lid has been closed and
Start/Pause is pressed, the lidlock will be activated and the cycle begins.
If the power fails, either from a power cut or having been switched off at the wall, the lid may be
opened. In some circumstances the drum door may not be in the open position. When the power is
restored the dryer will automatically recommence the drying cycle as long as the lid is shut.
If it is absolutely necessary to remove the load before the power is
restored, follow the steps below:
1. Ensure the dryer is disconnected from the power supply.
2. Open the lid (this will already be unlocked).
3. On the left hand side of the dryer there is a thumb tab that appears
when the drum is not open. Press the thumb tab and rotate the
drum by hand towards the back of the machine.
4. Hold the thumb tab down until the drum door starts opening.
5. Keep rotating the drum until the door is fully open and the drum
comes to a stop.
6. The clothes can now be removed.
7. Close the lid once the clothes have been removed.
8. Re-connect the power supply to the dryer.
The drum door will automatically close and the dryer will resume normal
operation when power is restored.
3.5.4 Lint Filter
Lint laden air passes through the small
holes in the outlet end of the drum (the
small holes around the lint bucket). The lint
removal system is directly behind these
holes. As this air moves through the holes
it is forced through the lint filter. The fan
then sucks the air down through the duct
and out the back of
the dryer.
The lint filter in the
SmartLoad™ dryer
is circular and is
positioned next to the drum. When the
drum rotates the lint filter rotates with it.
The filter is made of very fine 200-micron mesh. All clothes dryers produce potentially flammable lint.
Use of a fine mesh enables a lint filter to catch more lint from the air before it reaches the exhaust
ducting. That reduces the possibility of any blockages or hazards caused by the accumulation of lint.
There is a scraper situated on the top of the lint collecting housing which the filter moves past. Where
the lint on the filter builds up, the lint begins to touch the scraper, and is automatically scraped off.
Because the scraper is directly above the lint bucket it falls straight in.
The scraper helps achieve consistent airflow throughout the drying cycle by continuously removing any
accumulated lint from the mesh of the filter.
Lint Filter
Lint Filter

11
The dryer user manual and lid label instruct the user to empty
the lint bucket before the lint reaches the top of the transparent
part of the bucket. If the lint bucket overflows due to the user
not emptying it, the SmartLoad™ dryer can clear itself. The
user just needs to empty the bucket and run the dryer on a
cycle for approximately 20 minutes. The dryer will free all the
trapped lint and will re-deposit it back into the lint bucket.
3.5.5 Airflow
An intake grill at the bottom rear of the cabinet provides an
entry point for the airflow through the dryer via four large
louvred slots. Additional air is drawn in at the front of the
cabinet under the front panel. A fan on the exhaust side of the
drum draws the air over the heating elements/gas burner
located in a combustion chamber, through an inlet duct and into
the drum.
The air exits the drum through a self-cleaning lint filter in the
drum outlet duct, then passes through the fan housing and out
the rear exhaust vent situated at the bottom rear of the cabinet.
Lint
Cold
Air
Drum
Lint Removal
System
Heater
Hot Air
Belt
Outlet
Belt Tensioner
System
Fan Motor
Rear Exhaust Vent
Air Intake Grill
Lower Rear Cabinet Panel
Scraper
Lint

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3.5.6 Temperature Control
The user can select either a dryness level that they require or a timed drying period. Auto sensing of
the clothes load dryness level is achieved by touch sensors that sense the moisture content of the
load. An exhaust temperature sensor is used to monitor the exhaust temperature. The controller limits
the temperature to what is required for the various cycles.
3.5.7 Cool Down
The dryer enters a cool down period at the end of the cycle. During this period the dryer continues to
run with the heating elements/burner turned off, blowing ambient air through the load to help prevent
creasing. If an Auto Sensing cycle has been selected, the cool down period will continue until the
exhaust temperature drops to 95oF (35oC). If a Timed Dry cycle has been selected, the cool down
period will run for the last 5 to10 minutes of the timed dry period.
3.5.8 Drum Parts.
1. Drum Inlet End: Allows inlet air to pass through. This is how air enters the drum. It also
houses the inlet central bearing assembly, about which the drum rotates.
2. Drum End Outlet: Provides the route for air to exit the drum as well as securing the lint filter.
The outer face has dimples which are collectively referred to as “the drum tachometer”. The
central flange of the drum end outlet is supported and guided by seven bearing pads which
are mounted in the outlet duct.
3. Vanes: Encourage clothes to tumble during the drying cycle.
4. Drum Door: Slides back along grooves in the bridge to provide access into the drum.
5. Door Bracket: Secures and seals the drum in the closed position and houses components
for latching the door.
6. Hinge Arm: Part of the door assembly, which is contacted by the door grabber for opening
and closing the door. It also latches the door closed over the end of the track.
7. Locking Bar: Attached to its ends are the hinge arms. Its function is to hold these hinges in
the correct orientation.
8. Hinge Spring: Springs the hinge arm down to ensure latching when the door is closed.
1
2
3
4

13
There is also a Drum Door Scraper that prevents clothes from being drawn into the gap between the
drum and the door when the door is opening, and a Key Bracket that prevents the door from closing
when the clothes are protruding.
3.5.9 Drum Control.
The drum is coupled to a three phase induction motor by
way of a pulley on the motor shaft, which drives via a “V”
belt and belt tensioner system. The motor control module
controls the motor by generating the three phases from a
high voltage rectified DC rail. When tumble drying, the
drum is tumbled at 47 RPM, during opening and closing at
5 RPM, and at other speeds as required and requested
from the sensor module. Feedback on speed is via the
drum tachometer signal, which comes via the sensor
module.
When drying, the drum rotates in the door closing
direction for 4 minutes, after which it coasts to stop and
reverses for 40 seconds, then coasts to stop before
repeating the reversing throughout the drying and cooling
cycle. The reversing of the drum direction reduces
tangling.
During Wrinkle Guard the drum rotates in one direction
for 30 seconds, then stops for 5 minutes without opening the drum door, after which it goes in the
opposite direction for 30 seconds, then pauses again before turning off. If the user does not remove
the clothes load, the cycle is repeated 255 times, which take approximately 23 hours. The elements /
burner are turned off during this process.
The drum tachometer uses pressed “dimples”, formed directly into the drum end outlet, spaced every 2
degrees to provide positioning information while also providing speed data. There is a 15 degree “gap”
to provide the reference for absolute position. An infrared diode and optical receiving transistor
provide the reading of the “dimples.” The digital signal is output to the motor control module, which
uses the signal for speed controlling the drum. The drum position is monitored by the sensor module,
which uses the position for both speed commands and drum door actuator control.
Belt Tensioner
System
Belt
Three Phase
Motor
5
6
78

14
3.5.10 Drum Door Control
The drum door is opened and closed by the door
grabber, which is positioned by an actuator driven by a
small DC brush motor.
A mechanical interlock prohibits the drum door from
latching closed if garments get caught in the door
opening. With the door unable to close, the drum will
stall, which will be sensed by the motor control module
and corrective action will occur.
After Start/Pause is pressed when the dryer is waiting
with the drum door open:
1. The lid will lock.
2. The sensor module assumes the drum door is open at “Home” and rotates the drum at 5 RPM in
the drum door close direction. If it is “Home” and the grabber lowered, the door will close at 78
degrees away from “Home”. Note: If the door is closed and the grabber lowered, the drum will
simply rotate with a slight rubbing noise of the grabber on the drum.
3. If the motor stalls after the drum has moved at least 42 degrees, a “Clothes Jammed” fault will be
internally flagged and the drum will reverse and the door will open before trying to close again.
After three unsuccessful attempts, the drum door will open, the lid will be unlocked and the
relevant User Warning will occur.
4. At the “Retract Grabber Position”, 142 degrees from “Home”, the sensor module begins moving
away the grabber.
5. If a fault is detected during the actuator movement, the operation of the actuator will be checked.
The drum will stop and an attempt will be made at moving the actuator back to lower the door
grabber.
6. If a fault is again detected, a maximum of five attempts are made at moving the grabber,
alternating the direction with each attempt, until finally the dryer will display the relevant fault
code and remain in the stationary position with the lid unlocked. If however the actuator is
operated correctly, the grabber is left in the retracted position.
7. When the grabber is confirmed to have retracted, the drum motor is sped up to 47 RPM and the
sensor module will begin or continue the normal drying operation.
When Pause is pressed or the drying is completed:
1. If the drum is rotating in the Close direction, then it will be reversed and the drum speed will be
set at 20 RPM, at which speed the position of the drum is verified using the tacho “Gap” as its
reference. If however the drum was moving in the open direction, its position may have already
being verified at the higher speed, but if not, will be set to slow down to 20 RPM until the position
is verified. If within 40 seconds the sensor module is unable to verify its position, either because
no “Gap” of sufficient arc has been detected or a correct count for a complete revolution of the
drum cannot be obtained, then a fault code will be displayed.
2. Once the position is known, the drum speed begins to slow to 5 RPM. Provided the drum speed
has reduced to at least 18 RPM when the drum position is 132 degrees from the extended door
grabber position (210 degrees from “Home”), the lowering of the grabber begins.
3. As the bridges approach the lowered door grabber, wings on each side of the grabber enter the
bridge channels. If the wings do not enter the channels, the grabber will be unable to open the
drum door (refer to the diagram below).
Reference
Point
Dimples
Door Grabber is lowered against the Wrapper

15
4. As the drum continues to rotate, the engagement ribs attached to the door grabber unlatch the
drum door hinge arms, lifting them out of the channel slots. The hinge arms are raised by details
on the door grabber to the top face of the bridge channels. The drum continues to rotate in the
opening direction, while the drum door is held stationary by the door grabber.
5. As the drum reaches the fully opened position, details on the drum bridges hit the door grabber,
causing the motor to stall and the drum to stop. The drum is now in a fully opened position,
where the user can load or unload garments from the dryer.
6. The dryer electronics can determine whether the drum has reached the correct position by way
of the optical sensor attached to the Sensor board, which uses the dimples on the drum end
outlet to determine the drum position.
7. Provided there is no failure in extending the grabber, the drum door will be opened. However, if
a failure is detected in the actuator’s movement, the drum will immediately stop. The dryer will
then attempt to retract the grabber. If the grabber is successfully retracted, the sequence will
repeat from step 1 of this opening sequence. However, if the actuator fails to successfully move
the grabber after repeated attempts, the sensor module will stop the drum in its closed state and
a fault code will be displayed. Five attempts are made to open the drum door before flagging the
fault.
8. The lid lock will be released.
When the power is first switched on or restored after interruption:
In normal circumstances where the previous cycle was completed successfully, when power is
reapplied to the product, the sensor module will assume the door is open and the machine is at rest.
In all other cases it will either continue operating or return to the “home” position so that the drum door
is open and the lid is unlocked. If for some reason the drum door is not open, then the operator will
need to first start, then pause the machine to return it to its drum open position. When the dryer
recommences operation, the sensor module must allow for the situation where the drum door may be
part way through an opening or closing sequence. In order to do this without the risk of damaging any
of the mechanical parts, the sensor module executes the following sequence:
Engagement Ribs contacting Hinge Arm Hinge Arm and Locking Bar are unlatched by
the Door Grabbe
r
Bridge Channels
Door Partiall
y
O
p
ened Drum is stopped by the Door Grabber

16
1. Moves the drum in the open direction to check if the user has manually opened the drum door,
and if found so, will stop and assume the normal off position.
2. If not “Home”, moves the drum so as to close the door, moving as far as would normally be
required to close the door from the “Home” (fully open) position.
3. The sensor module then operates the grabber and leaves it in the retracted position.
4. Provided the grabber was successfully retracted, the drum will continue rotating in the Close
direction; ramp up to full speed, and the dryer will continue its cycle.
3.5.11 Heater Control.
The heaters are controlled in response to the selected drying cycle chosen and also according to other
technical requirements such as reversing and over heating.
In the electric heater models, the heater housing is fitted with two elements that supply about 5 kW of
heat when both are on. There is a 3.6kW and a 1.4kW element that are used at various times
depending on the cycle chosen and the drum/fan direction. For the gas model, a gas burner is used to
provide the heat, and this is turned on for lower duty times for the Permanent Press and Delicate
cycles to apply similar heating as the electric model.
When drying, the heater is only switched on when the drum is up to speed. Because of the time it
takes for the element to cool down after switching off, the larger element in the electric model is
switched off a few seconds before stopping to reverse, to prevent excessive heat entering the drum.
The software in the motor control module responds to the switching on and off of the heater as
requested by the sensor module. It also monitors the automatic thermostat on the heater housing for
excessive restriction of airflow, and if detected, will set a User Warning but continue the drying cycle
until the end of the cycle when the warning will reset. If the User Warning occurs, the drying will take a
longer time to complete and the load will possibly end up a little damp.
Each cycle, Denim through to Delicate, has a temperature limit, as defined in the table below, as
measured in the exhaust air. After switching off at the limit, the temperature has a hysteresis of 5
degrees below these temperatures when the heat source switches back on.
Denim Regular Permanent
Press
Delicate
149oF (65oC) 149oF (65oC) 140oF (60oC) 127oF (53oC)
When tumbling the heat source is turned on as shown in the table below:
Electric
Door Close Direction
4 minutes
Door Open Direction
40 seconds
Element 2/3 Heat Element 1/3 Heat Element 2/3 Heat Element 1/3
Heat
Denim ON ON OFF ON
Regular ON ON OFF ON
P.Press ON OFF OFF ON
Delicate ON OFF OFF ON
Air Dry OFF OFF OFF OFF

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Gas
Door Close Direction
4 minutes
Door Open Direction
40 seconds
Gas Ignition delay Gas Heating
Denim 30 seconds 3 minutes 30 seconds No Heat
Regular 30 seconds 2 minutes 30 seconds
P.Press 30 seconds 2 minutes 30 seconds
Delicate 30 seconds 2 minutes 30 seconds
Air Dry No Heat No Heat
Note: During heating, if the temperature exceeds the limits for the particular cycle, the heat is turned
off and can significantly reduce the heating time. This is particularly true for gas dryers which require
the 30 second ignition time.
Cycle times can be affected by a number of factors including:
§The cycle chosen
§Load size
§Size of items
§Type of fabric
§Load wetness
§Venting method
§Location of dryer
§Condition of exhaust ducts
§Heat used (electric, natural gas or LPG gas)
§Environmental conditions (temperature, humidity)
The table below shows approximate cycle times (in minutes) for an 8 pound (3.6 kg) load dried using
the regular cycle.
Damp Damp/Dry Dry Dry/Extra Dry Extra Dry
Smartload™Electric 26 36 47 50 50
Smartload™Gas 29 38 47 49 51

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3.5.12 Thermostats (Electric)
There are three thermostats located on the combustion housing, two auto reset thermostats and one
manual reset thermostat.
The manual reset thermostat should only trip if there is a fault in the product, or a failure develops. In
all other cases the two auto thermostats should control the heat of the elements.
Two auto thermostats are used on the heater because under different airflows the hot airstream is in
different areas. The thermostat near the duct inlet controls the temperature when the airflow is
medium to high and the thermostat above the manual thermostat (between the elements) comes into
play when the airflow is low.
The two auto reset thermostats have the same trip temperature however the upper thermostat (located
above the manual reset thermostat) has an exposed disk. It is important that the correct thermostat is
fitted to the correct location.
Upper Auto Reset Thermostat
(with exposed disk)
Part Number 395668
Trip Temperature 158oF ± 6o(70°C ± 3o)
Reset Temperature 131oF ± 7o(55°C ± 4o)
Lower Auto Reset Thermostat
Part Number 395455
Trip Temperature 158oF ± 6o(70°C ± 3o)
Reset Temperature 131oF ± 7o(55°C ± 4o)
Manual Reset Thermostat
Part Number 395155
Trip Temperature 212oF ± 11o(100oC ± 6o)

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3.5.13 Auto Sensing
When wet or damp clothes are loaded into a dryer they are partially saturated with water which is a
relatively good conductor of electricity. In the SmartLoad™ dryer, sensor bars are used to measure
the conductivity. When moisture in the clothes touches across the sensor bars (located beneath the
lint bucket) their conduction is measured. As the clothes dry they become less conductive and it is this
measurement that is used to calculate the dryness of the clothes load.
Large loads will brush against these moisture sensor bars more frequently than small loads, and this
strike count is used to help determine the dryness of different sized loads.
Different fabrics retain moisture differently; a thick towel containing a lot of moisture will often conduct
the same as a light synthetic garment containing very little. It is this difference in fabric characteristics
plus the initial unknown moisture content that makes the calculation of dryness reasonably complex.
3.5.14 Regulator Valve
In a gas dryer, the regulator valve forms part of the gas control system and performs the function of
regulating the gas pressure into the burner venturi and turning the gas flow on and off.
The regulator valve consists of two solenoid shut-off valves, a gas pressure regulator and a gas orifice
assembled into a single cast body. The pressure regulator is factory set to maintain 3½ inches of
water column (WC) gas pressure at the orifice (0.87kPa). The regulator is service adjustable. The two
solenoid valves are in series such that the gas flowing through the pressure regulator must pass
through both valves to get to the orifice and burner. At dryer start up, the gas igniter is energised and
the first valve is opened. Once the gas igniter has reached ignition temperature, the gas flame
detector operates the second valve, allowing gas to flow through the orifice and into the burner venturi,
and ignition takes place. The second valve is held open only when a flame or hot ignition is detected
by the gas flame detector.
The orifice is a precisely drilled brass plug screwed into the outlet port of the regulator valve. The
orifice extends into the burner venturi. The combination of regulated pressure and orifice size provides
the proper volume of gas for the heat rating of the burner. The regulator valve comes from the factory
sized and adjusted to deliver heat at the rate of 20,000 BTUs per hour, using natural gas.
While natural gas is most commonly used, the regulator valve is also able to accommodate the use of
LPG. In this case, a LPG conversion kit (part number 395489) is used to modify the regulator valve to
achieve the correct volume of gas flow for LPG.
Gas Pipe Gas Flow
Regulator
and Valves
Orifice Igniter
Flame Detector
Information fed back
to gas flow regulator
and valves from
Combustion
Chamber

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3.5.15 Gas Flame Detector
The gas flame detector is an essential safety device that forms part of the control system for the gas
burner. It consists of a thermostatically operated single-pole, single-throw, normally closed bimetallic
switch that is sensitive to radiant energy.
The function of the gas flame detector is to detect when the gas igniter has reached an appropriate
temperature to ignite the incoming gas/air mixture, and then energise the secondary valve in the
regulator assembly, releasing the gas into the burner venturi. The gas flame detector also detects the
radiant heat from the flame once ignition is achieved and keeps the secondary valve open as long as it
detects a flame present. If for any reason the flame is extinguished, the flame detector contacts will
close in approximately 30 to 50 seconds, causing the secondary valve to close, thereby turning off the
gas supply to the burner venturi.
The system takes approximately 20 to 30 seconds to operate the regulator valve once the gas ignitor
has been energised. This length of time is a function of the thermal inertia of both the gas ignitor and
the gas flame detector.
The gas flame detector is attached to the side of the combustion housing with a tab-through-slot and
one screw. A rectangular hole in the combustion housing adjacent to the “window” in the gas flame
detector allows the radiant energy to reach the gas flame detector.
Gas Pipe
Gas Fl
Rep
Does the ignitor glow
Burner
Venturi
Orifice
Igniter
Igniter
Bracket
Gas Burner Assembly