I have a DV42H5400 dryer less than a year old that runs for a few seconds than stops. No error code but the cooling light flashes. After a few minutes it repeats the process.

Based on symptom and details, the control has detected a component failure. Since your model does not have digital display window in order to display a fault code, it will flash the four indicator lights of

Drying, Cool Down, Wrinkle Rid (Press Saver), and Clean Lint Filter will flash the number of times for the first digit of the code and the START indicator light will flash the number of times for the second digit.

Take separate counts of each indicator light, then repeat to confirm in order to be accurate in identifying the proper error code. The code is obtained by counting the number of times the lights flash. Example E24: The four indicator lights would flash twice indicating the 2 and the START indicator light will flash four times indicating the 4. The four indicator lights and the START indicator light

start flashing at the same time. The control will pause for 2 seconds, then repeat the code.

The failure is likely because of a faulty thermistor or because the heater is not working. It could have a broken heating element or a burnt wire connection at the control board. I would begin by accessing the thermistor and disconnecting it. The thermistor can be tested with an Ohm meter. The thermistor should measure approximately 50,000/5K Ohms at room temperature.

The heating element is located behind the drum and it can be disconnected and tested for continuity with an Ohm meter.

NOTE: Disconnect the dryer from the power supply before servicing.

I have no idea

Alarm conditions during operation of the dryer

The LEDs begin to flash if one of the following malfunctions occurs:

• NTC open (the LEDs flash in sequence from right to left)
• NTC short-circuited (the LEDs flash in sequence from right to left)
• If the START button is pressed for more than 20 seconds while a cycle is in operation all the LEDs flash.

If the microprocessor identifies one of the conditions listed above, operation of the dryer is interrupted; the LEDs continue to flash in order to warn the user of the malfunction.
If the error is eliminated, the dryer returns to normal operation when the programme selector knob is turned to RESET and the drying cycle is re-selected.

Dado

Hello & Welcome to FixYa

PF error means power failure which is generally caused when the control board inside the unit goes bad. You can try unplugging the unit for 15-30 minutes, if the issue returns then the control board needs replacement. Please get back to me if you have any other questions.

Kevin

Error Indication Information
Error No. Error Information ERROR DESCRIPTION LAMP LED OSD LAMP OFF
(Note 3) (Note 4)
POWER LED TEMP LED
Note:
1.When any of the above errors has occurred, the LED will flash as shown above every 5 seconds.
2.When two or more errors have occurred at the same time, the LED will light up or flash as shown above, and then
change to another every 5 seconds in turn.
3.Warning OSD appears when the Air Filter is clogged 90%, accumulated operation time of the Lamp reaches 5000 hours,
or accumulated operation time of the Air Filter reaches 400 hours.
4.LAMP OFF: The LED will flash right after the Lamp goes off.
5.IC2301 is mounted on LCD Main C.B.A. which is included in the Projection Unit.
6.IC6001 is mounted on TV Main C.B.A.
Clogged air filter
more than 90%
15)
16)
17)
18)
1)
2)
3)
4)
5)
6)
7)
11)
8)
9)
10)
12)
13)
14)
- flashes 5 times -
every 5 seconds
IC2301(pin82) detects the clogged air filter, then indicates the
error when the air filter is clogged 90%.
Front Fan stop or
Lamp Fan stop
flashes orange
once every
5 seconds
- -
IC2301(pin12) detects the Front FAN stop or Lamp
FAN stop, then indicates the error when the Front FAN
or Lamp FAN is stopped.
Lamp Cover open
Temperature Sensor
short or open
flashes orange
twice every
5 seconds
flashes orange
3 times every
5 seconds
flashes green for
140 seconds.
flashing red for
60 seconds.
light up red.
flashes once
every 5 seconds
flashes once
every 5 seconds
flashes red for
10 minutes
flashes once
every 5 seconds
-
-
-
-
Abnormal
Temperature
flashes twice
every 5 seconds
flashes twice
every 5 seconds
- -
Request for Lamp
Replacement - - lights up
Power Ballast Error
(abnormal
Lamp voltage)
- -
flashes 3 times
every 5 seconds
Power Ballast Error
(abnormal
temperature)
- -
flashes 4 times
every 5 seconds
Power Ballast Error
(other causes) - -
- -
Request for Filter
Cleaning -
Abnormal Voltage
on 16 V line of
LCD Main C.B.A.
-
flashes twice
every 5 seconds
flashes twice
every 5 seconds
Abnormal Voltage
on 14 V line of
LCD Main C.B.A.
-
flashes 3 times
every 5 seconds
flashes 3 times
every 5 seconds
Abnormal Voltage
on 7 V line of
LCD Main C.B.A.
-
flashes 4 times
every 5 seconds
flashes 4 times
every 5 seconds
IC2301(pin76) detects the Lamp Cover Unit condition
(open or close), then indicates the error when the
Lamp Cover Unit is open.
IC6001(pin85) detects the Duct FAN stop, then
indicates the error when the Duct FAN is stopped.
IC2301(pin74 and 75) detects open or short of the Temperature
Sensor (R2911) on Front Thermistor C.B.A., then indicates the
error when Temperature Sensor is open or shorted.
(The error is not detected for 1 minute after Lamp ON.)
IC2301(pin74 and 75) detects the temperature attached near
the Front FAN by the Temperature Sensor (R2911) on Front
Thermistor C.B.A., then indicates the error when the
temperature becomes more than 43 C (109 F).
(The error is not detected for 1 minute after Lamp ON.)
IC6001(pin86 and 87) detects open or short of the
Temperature Sensor (R2901) on Lamp Thermistor C.B.A.,
then indicates the error when Temperature Sensor is open or
shorted.
(The error is not detected for 4 minutes after Lamp ON.)
IC2301(pin74 and 75) detects the temperature attached near
the Lamp by the Temperature Sensor (R2901) on Lamp
Thermistor C.B.A., then indicates the error when the
temperature becomes more than 60 C (140 F).
(The error is not detected for 4 minutes after Lamp ON.)
IC2301(pin11) detects the error of LCD Power C.B.A.,
then indicates the error when the temperature fuse
(117 C)(243 F) in LCD Power C.B.A. is open.
IC2301(pin11) detects the error of LCD Power C.B.A. and Lamp,
then indicates the error when an inner malfunction of LCD Power
C.B.A. occurs, the Lamp voltage becomes more than 130V or
less than 30V, Lamp current becomes more than 5A, or the Lamp
is cracked.
IC2301(pin11) detects the error of the Lamp, then indicates the
error when the Lamp is short-circuit.
IC2301(pin48) detects +16V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +13V.
IC2301(pin47) detects +14V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +11V.
IC2301(pin45) detects +7V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +5.7V.
IC2301(pin44) detects +3.3V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +2.5V.
flashes 3 times
every 5 seconds
flashes 4 times
every 5 seconds
Abnormal Voltage
on 3.3 V line of
LCD Main C.B.A.
-
-
-
- flashes 5 times
every 5 seconds
Forced cooling
The failure of Lamp
light up
-
Temperature Sensor
short or open
-
-
Abnormal
Temperature
Duct Fan stop -
When accumulated operation time of the the Lamp reaches
5000 hours, OSD (replacing the Lamp) appears on the screen.
Note: The Lamp time is stored in EEPROM (IC2305).
When accumulated operation time of the Air Filter reaches 400
hours, OSD (cleaning the Air Filter) appears on the screen.
Note: The Filter time is stored in EEPROM (IC2305).
During forced cooling, this indication is indicated.
IC2301 (pin11) detects the failure of light up processing of
the Lamp, then the POWER LED is changed as follows.
1) POWER LED flashes green for 140 seconds (while turning on).
2) POWER LED flashes red for 60 seconds (while cooling).
3) POWER LED lights up red (standby).
Note: If the Lamp will not light after attempting turning on the
power 2 or 3 times, the Lamp, the LCD Power C.B.A. or the
LCD Main C.B.A. may be defective.
Error Symptom Problem Possible Solutio

I would check for a faulty high limit thermostat. This is a small round device mounted on a metal plate and attached to the internal ductwork. It's recommended that the thermal fuse be replaced at the same time and may come as a set from a parts supplier. I will attach a photo of a fuse/thermostat for reference. Remember to disconnect the dryer from power source before attempting any repair. Sorry for your trouble and I hope this helped. Best wishes.

Check fuses, any thing added lately?

I have the same problem..really disappointed in this product. I bought mine in 07 as well..I found that if i hold all the buttons down and then hit start it (Sometimes starts), but after it starts it turns off after 10 seconds.

hello Whgispers42,
Huuum At your service!

You said,
We frequently have to start the dryer several times during one load. The dryer will run fine for a while then all the sudden give 3 beeps and then the F 70 code. Sometimes when you go to start the dryer you can press power and the panel will light up for about 3 - 5 seconds and then shut off again, this will happen several times in a row. We have been unable to solve this issue ourselves and are becoming very frustrated since this washer/dryer set are less than a year old. Any help you could offer would be greatly appreciated. (If we are unable to fix this problem soon, it is likely that the dryer will make a sudden leap from the second floor window to the backyard)


Try this first!!
This is an error code.

This can reset the system.
First unplug the washer and wait a 5 minutes then restart it.
It's like rebooting your computer when its acting strange!
Usually it corrects some error problems if they are not serious.
Or they are sometimes just a glitch.

If this does not help, you said the machine is not one year old.
All appliances have a 1 -year warranty and the service and parts are free for that first year!
I hope you succeed with my recommendations.
Please contact me with your progress1

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