Common Faults with Fisher and Paykel Dryer

MODELS: DEGX1 / DGGX1 / DEGX2 / DGGX2 / DEIX2 / DGIX2

IMPORTANT SAFETY NOTICE

CAUTION: This dryer must be electrically grounded in accordance with local codes and ordinances.
Common faults with Fisher and Paykel dryer. In the event of malfunction or breakdown, grounding will reduce the risk of electric shock by providing a path of least resistance for electric current. For further details refer to the "Installation Instructions". Minimum earth wire sizes are: 13AWG for DGGX1, DGGX2 and DGIX2 Gas Dryer & 10AWG for DEGX1, DEGX2 and DEIX2 Electric Dryer.

CAUTION: Electrical shock hazard: Disconnect the electrical power supply before installing or servicing dryer.
Pressing the POWER button to turn the dryer off, does not disconnect the dryer from the power supply, even though the lights on the dryer control panel are off. Consequently, all terminals and internal parts should be treated as live.

IMPORTANT – Reconnect all grounding devices:
If grounding wires, screws, straps, clips, nuts or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.

IF A FAILURE OCCURS
Most failures are diagnosed by the Diagnostic System. If a fault is detected the operation is stopped, and a fault code is displayed on either the DRYING PROGRESS LED’s or LCD screen and a warning is sounded.

If that occurs:

1. Record fault code (see example over).
2. Remove the plug from the wall outlet for at least one minute.
3. Plug in and start the machine, if the condition recurs, use the Diagnostic Mode to determine the cause.

DIAGNOSTIC MODE G (GENERAL)
A number of diagnostic mode options are available but service technicians should use the Last Fault Option.

To Select DIAGNOSTIC MODE – Last Fault Option.

1. (a) Turn the power supply to the dryer on.
2. (b) Press and hold the Auto Dry down button, while you momentarily press the Power button.
   The dryer is now in diagnostic mode.
3. (c) Press the Auto Dry up button three times to read the Last Fault Option. For other options see Service Manual.

Each LED has a specific value as follows:

In this example the LEDs with value ‘8’, ‘2’ and ‘1’ are on, therefore 8+2+1=11 Fault code #11 is displayed. Investigate corrective action in sequence as listed in the tault code summary on the following page.

G (GENERAL) AND I (INTUITIVE) FAULT CODE SUMMARY

The following are the fault codes that may be displayed. The remedy section of each fault is the suggested sequence of repair or replacement. If the first suggestion does not remedy the fault, check the next on the list.

Fault Code 1 – Communications Error.

Communications failure between the sensor module and motor control module.
Remedy:

1. Check the continuity of the module interconnecting harness.
2. Replace the sensor module.
3. Replace the motor control module.

Fault Code 2 – Drum Gap Cannot be Located.

Remedy:

1. Ensure the sensor module is correctly located and clipped into place.
2. Replace the lens on the sensor module.
3. Replace the sensor module.
4. Remove the top deck and clean the drum sensing "bumps" on the outside of the drum end.
5. Replace the drum.

Fault Code 3 – Drum Stalled.

Remedy:

1. If there is mechanical movement of the drum, but this fault code is appearing, follow the procedures for fault code 2.
2. If there is no mechanical movement of the drum, check drum movement mechanisms: belt, motor and motor harness.
3. Replace the motor control module.
4. Replace the motor.

Fault Code 4 – Invalid Option Link Read.

The motor control module heat source option link read is invalid.
Remedy:
Replace the motor

Fault Code 6 – Door Jammed – (User Warning).

The door is unable to close due to either clothes catching or an excessive closing load.
Remedy:

1. Remove the obstruction.
2. Reposition or remove some of the load.
3. Fix the cause of binding in the door closing mechanism.
4. Replace the motor.

Fault Code 7 – Motor Current Excessive.

Remedy:

1. Free up the dryer. Remove overload or cause of jamming.
2. Replace the motor control module.
3. Replace the motor.

Fault Code 7 – Display Module RAM Check Error – I only
On power up, the display has checked its memory against a known reference and found differences.
Remedy:
Replace the display module.

Fault Code 8 – Exhaust Sensor Over Temperature.

The exhaust sensor measures over temperature (element short circuit or low resistance).
Remedy:

1. Checkthe integrity of the sensor circuit checking particularly for short circuits.Approximate resistances (+/_ 10%) at various temperatures are; 0°C = 33 kOhms, 22°C = 11 kOhms, 40°C = 5 kOhms. Replace thermistor and harness if out of range.
2. Check the element integrity in that it switches off when the dryer is stopped.
3. Replace the motor control module.
4. Replace the sensor module.

Fault Code 9 – Exhaust Sensor Under Temperature.

The exhaust sensor measures under temperature (open circuit or not plugged in).
Remedy:
Refer to steps for over temperature fault (fault code 8) above, but open circuit likely.

Fault Code 10 – 24 Volt Supply Measurement Error.

The sensor module measures low voltage on actuator power supply.
Remedy:
Replace the sensor module.

Fault Code 11 – Lid Lock Open Circuit.

Remedy:
Check the lid lock harness and coil. If there is continuity through these, replace the sensor module.

Fault Code 12 – Lid Lock Switching Device Failure.

Remedy:
Check that there are no short circuits in the lid lock circuit which may have caused the failure in the sensor module. The resistance of the lid lock should be between 50 and 100 ohms. If the circuit is correct, replace the sensor module.

Fault Code 14 – Sensor Module Fault.

Remedy:
Replace the sensor module.

Fault Code 15 – Sensor Module Fault.

Remedy:
Replace the sensor module.

Fault Code 16 – Airflow Restriction – (User Warning).

Airflow restriction.
Remedy:

1. Check that the lint bucket is empty and the filter is clear.
2. Ensure that the exhaust duct is not restricted, blocked or kinked, preventing good airflow.
3. Ensure .that there is nothing inhibiting unrestricted airflow through the heater housing, through the drum, lint filter, lint collector and through the exhaust duct, and that the element has not shorted. If the dryer is located in a closet ensure there is adequate ventilation for air intake.
4. Check that the voltage is not too high.
5. Check for element shorts or low resistance.
6. Replace the automatic thermostat.
7. Replace the motor control module.

Fault Code 20 – Door Actuator Stalled.

Remedy:
As per fault code 21.

Fault Code 21 – Door Actuator Required Excess Voltage.

Remedy:

1. Ensure there is no weight placed on the lid of the product (e.g. clothes basket). If so, remove the weight and retest.
2. Inspect the installation, making sure that the cabinet sits evenly on the floor. If excess load is placed on the cabinet, it can cause the sub-deck assembly to twist.
3. Inspect the front inside edge of the top deck for any signs of excessive inwards bowing as this can cause it to catch on the door grabber, resulting in excess current draw on activation. The bowing can be caused by a bowed top deck or by incorrect assembly of the top deck to the cabinet front.
4. Ensure the user intervention tab is not inhibiting door grabber movement.
5. Check that the actuator linkage is located correctly. There must be no gap between the linkage and the plastic moulding.
6. Check that the actuator housing is in place, and that the four retaining lugs are correctly located. Early models may have aluminium tape holding the housing in place. If so, ensure that the tape is replaced when the housing is refitted.
7. Remove the actuator housing and look for obvious signs of things that are out of position (can the worm drive be rotated freely both backwards and forwards by hand, is the actuator motor in place?)
8. Replace the faulty door actuator mechanism.
9. Replace the door grabber, linkage and housings.
10. Replace the sensor module.

Fault Code 22 – Door Actuator Open Circuit.

Remedy:
(1) Check that the actuator wiring is plugged into the sensor module and is not open circuit. If faulty, replace.
(2) Replace the sensor module.

Fault Code 23 – Door Actuator Movement Interrupted By Low Voltage.

The door actuator movement was interrupted by low voltage (brown out).
Remedy:
(1) Ensure mains voltage is within +10% and -15% of nominal.
(2) Replace the sensor module, as voltage measurement circuit may be reading incorrectly.
(3) Replace the motor control module, as it may not be supplying sufficient power to the sensor module. When display is off, approximately 24V DC is supplied.

Fault Code 24 – Door Actuator Movement Took Too Long.

Remedy:
As per fault code 21.

Fault Code 28 – Data Retrieval Error Following Loss of Power.

Remedy:
(1) Switch off the mains power supply to the dryer for at least 10 seconds and confirm error.
(2) Replace the motor control module.

Fault Code 29 – Brown-Out Data Retrieval Error.

Remedy:
(1) If the fault occurs every time the dryer is turned on, replace the sensor module.
(2) Replace the motor control module.

Fault Code 30 – Lid Lock unable to Lock – (User Warning).

Reason: The lid lock failed to lock. (Not user displayed.)
Remedy:
(1) Ensure the lid is closed and the tongue engaged.
(2) Replace the lid lock harness.
(3) Replace the lid lock.
(4) Replace the sensor module.

Fault Code 45 – Display Module ROM Check Error – I only
On power up, the display has checked its memory against a known reference and found differences.
Remedy:
Replace display module.

Fault Code 105 – Comms ErrorTime Out – I only
Communications failure between the sensor module and display module.
Remedy:
(1) Visually check the contacts on the RAST (edge) connector at each end on the harness between the sensor module and display module.
(2) Using a multimeter check for continuity of the wires on this harness.
(3) Replace display module.
(4) Replace sensor module.
Note: The blue or green Air Dry LED illuminated without the fault "beeps" indicates the dryer is in a low mains voltage (brown out) state, and may be momentarily displayed when the supply power is turned off.

DIAGNOSTIC MODE I (INTUITIVE)

Entering the Diagnostic Mode
To enter the Diagnostic Mode press and hold the Lifecycles button and then the Power button. The machine will give 2 short beeps and the LCD screen will go blank. Make sure that the buttons are released after the beeps.

Note: Provided the power supply to the machine is switched on, diagnostic mode may be entered at any time.

Data Display
To enter the Data Display screens, push the Lifecycles button again. One of three displays will appear in the screen (detailed below). To scroll through the different screens use the Options Up or Down buttons.

Fault Status Screen
This screen will indicate the last fault code that occured. If a fault is registered the fault code is saved to EEPROM, which retains its memory even when the power is switched off. The fault code will remain visible until another fault code overwrites it.

Machine Status Screen
Tacho: This displays the position of the drum. The displayed figure is updated every five seconds and will change as the drum revolves.
Exht tmp: This displays the temperature in °C of the exhaust sensor. Actuator: This displays the current draw in milli-amps of the actuator motor.
Tacho Err: During reversals of the drum there will often be a transient error because of uncertainty of direction during the reversing process, but this should be connected to the next revolution.
Touch: This displays the impendance of the conductivity contacts.
LED Cnt: This is a measure of the infra-red light intensity required to sense the drum position. It is normally about 14 but can range from 5 to 53.

Warning Status Screen
The last User Warning will be displayed on this screen and will be displayed until another User Warning overwrites it.

DISASSEMBLY

WARNING
Always disconnect the mains power supply before commencing service work or disassembly of the dryer.
Pressing the Power button to turn the dryer off does not disconnect the dryer from the power supply, even though the lights on the dryer control panel are out.

Removing Lid
1. Open the lid to the upright position and lift it clear.

Removing Console

1. Remove the lid.

2. Remove 2 screws from the rear of the console.The console can be tilted forward to gain access to the Display Module.
NOTE: Modules removed from the machine for return must be protected from electrostatic damage while in transit by using the special package in which the spare parts were received.

Removing Top Deck

1. Follow instructions for removal of console.

2. Remove 2 lid buffers from front side top of deck by levering upwards.

3. Remove 2 screws under buffers securing top deck to cabinet.

4. Tilt top deck upwards towards the rear.

5. Disconnect display harness from sensor module, unclip and lift off Top Deck.

Removing Front Panel

1. Unfasten & tilt back the Top Deck (Steps 1 – 4 of Removing Top Deck).

2. Remove two screws from top (corners) of cabinet front.

3. Unclip cabinet front at sides, pull cabinet front forward, disconnect the earth wire at the bottom of the cabinet front from the base panel and lift the cabinet front clear.

TESTING THE CONDUCTIVITY CONTACTS G & I

Impedance Testing G
To enter the conductivity impendance check, enter the diagnostic mode then press the Auto Dry up button five times. In this mode, touching damp clothes or fingers across the conductivity contacts will cause the LED display to change. If the contacts, or the harness to them, have gone open circuit, no change will occur in the LED display. This is a useful method of checking the integrity of the sensor cells. To exit the diagnostic mode, press any cycle.

Impedance Testing I
It is possible to check the integrity of the conductivity contacts through diagnostics. Firstly enter the Machine Status Screen, and when in this modee, by touching damp clothes or fingers across the conductivity contacts.the value adjacent to the word Touch will increase. The minimum value is zero, this indicates an open circuit. The maximum value is 255. No change in this value when touching the contacts, or conversely a high value when not touching the contacts, would indicate a fault in this circuit.

ResistanceTesting (G and I)
An alternative, but slightly less reliable method of testing the conductivity contacts, is to test the circuit with a multimeter. When using this method to power to the dryer must be switched off. Place one probe of the multimeter on each conductivity contact. The resistance should be 6.4 MOhm ± 2%.