Dyson Pure Cool User manual

Service manual
Issued March 18

Repair notes
General notes........................................................................................................08
Full dismantle.......................................................................................................09
Full rebuild...........................................................................................................18
Technical information
Electrical safety testing............................................................................................03
Wiring diagram.......................................................................................................04
AQ displays during calibration................................................................................05
Accessing the diagnostic menu...............................................................................06
Diagnostic table......................................................................................................07
Parts diagram
Main body assembly................................................................................................32
Amp assembly.........................................................................................................33
Contents
Product overview
Features and benefits..............................................................................................01
This manual is written specifically for Dyson trained engineers and covers the full TP04 and
DP04 range. The service instructions assume that the engineer has the approved tools and
test equipment with them.

Product overview
Features and benefits
01
Sealed filtration - removes gases and particles
The fully - sealed filter system combines an activated carbon filter to remove
gases, and a Glass HEPA filter that captures 99.97% of microscopic allergens
and pollutants as small as 0.3 microns.
Draft-free diffused mode
New side vent to diffuse purified air,
creating circulation with no draft.
Forward airflow mode
Purifies and cools you.
Backward airflow mode
Purifies without cooling you.

01
Product overview
Features and benefits
02
Intelligent sensors detect
pollutants
Particulate, nitrogen dioxide,
and humidity and temperature
sensors continually monitor air
quality in the room. A unique
algorithm processes the input
and activates the machine, to
capture pollutants and project
clean air.
Wider room coverage with 350˚
oscillation
Maximise personal comfort by
customising the oscillation range up
to 350˚ through the App or choose
from 4 standard oscillation settings
from 45˚ to 350˚.
LCD display reports in
real-time.
Dyson Link app
Intelligent purification. Responds and
reports to your Dyson Link app.

02
02
Ensure that at all times during the repair and testing of products
that customers, pets, children and you are not exposed to any
Live electrical supply.
Insulation test
The following tests must be performed prior
to and upon completion of all repairs to
Dyson floorcare products and before any
functional checks.
You must ensure that a full visual inspection
of the product is completed prior to repair.
Test results
An insulation test reading of >2 MW
is acceptable.
A reading of below 2 MWis considered
unsafe and further investigation,
rectification and testing must be completed
before the product is used. The following
components must be visually inspected.
• Dust sensor loom and AMP assembly
loom.
The socket and see PDIT 360
(or equivalent) should be used to test
the electrical insulation of a Class 11
appliance; it indicates any electrical
leakage.
Insulation test points:
Test directly onto the four T-10 screws in the
Main body.
Note: the filters will need to be removed to
gain access to the screws.
These tests are vital to avoid any possibility
of personal injury to the end user.
If you cannot repair a product with an
insulation test reading of below 2MWyou
must inform the customer that the product is
unsafe to use.
Please inform the customer of the required
actions to repair the product (including the
charge structure).
If the product is left un-repaired please
indicate on your paperwork/hand held
device that the product is electrically
unsafe and attach a ‘WARNING’: product
electrically unsafe’ sticker in
a visible location on the product.
Technical infomation
Electrical safety testing
03

J8
J4
J10 J10
J18
J3
J1
J1
J2 J3
AMP
Assembly
J2
Oscillation
Motor
Oscillation
Sensor
Plantower
Dust Sensor
VOC
Sensor
Wi
Receiver
Main
PCB
LCD
PCB
Lower Body
Assembly
Main
Motor
Power
Adapter
Technical infomation
Wiring diagram
04

05
Technical infomation
AQ displays during calibration
When the product is new, the AQ sensors begin calibrating. This 1 hour process will affect
the VOC & NO2readings for the entire 1 hour duration. During this period the product will
show PM2.5/PM10 data after a few seconds of turning on. The following screens will be
displayed.
After the initial one hour calibration, it will take up to 20 minutes to calibrate the VOC and
NO2sensors each time a product has been switched off at the wall or unplugged.
During this period the following screens will be displayed.
After each calibration period the screens will now show readings as below.
Prior to carrying out any repairs that are associated to fauly air quality readings, it is
important to determine whether the product has a genuine fault or is simply calibrating.

06
Technical infomation
Accessing the diagnostic menu
Diagnostic menu
Built into DP04 and TP04’s software there is an engineers diagnostic menu designed to
enable the repair agent a quick diagnosis of the machines failure.
The menu is accessed by pressing a sequence of buttons via a standard remote control.
Once you have finished accssing the engineering menu, press any button on the remote
except the ‘i’ button to exit the diagnostic menu.
If the engineering screen does not appear press any button to reset and start again.
Repeat all steps ensuring the flow button is pressed between 11 and 13 seconds detailed in
step 3.
AUTO AUTO
AUTO AUTO
4
AUTO
Switch
machine on. Press night mode
button once.
Hold down flow
mode direction
button for 11 to
13 seconds.
Immediately press
the oscillation
button once.
Press i button three times to
show fault code screen
(the screen above is an
example).
13
4 6
5
2
Engineering screen
will appear.

07
Technical infomation
Diagnostic table
Further information to the above table, the LCD display may show the screens below to
help you diagnose the products fault.
These screens are displayed without having to go into the engineering screen.
Faults codes will be displayed as per the following format: 00X-0X-0X-X.
In most cases it is only necessary to recognise the first three digits to determine the fault.
Fault code Affected Part/s
Any codes starting with 002
except 002-02-01-2
Motor and Bucket assembly
002-02-01-2 Lower body service assy or Oscillation motor control harness
Any codes starting with 003 Main PCB assembly
Any codes starting with 004 LCD display service assembly or
Main PCB assembly
Any codes starting with 005 Main PCB assembly
Any codes starting with 006 Main PCB assembly
Any codes starting with 007 Power supply unit or
Main PCB assembly
Any codes starting with 008 Dust sensor service assembly or
Sensor input service assembly or
Sensor PCB service assembly
Any codes starting with 009
except 009-01-01-1
Wifi harness assembly
009-01-01-1 Motor and Bucket assembly
1. Air Quality (AQ) Sensor fault
2. Temp Sensor fault
3. Humidity Sensor fault
4. AQ Sensor fault
5. Wrong Power Supply Unit (PSU) inserted/PSU fault, advise to use the Dyson PSU that
came with the machine.
6. Fault. Shown permanently if fatal fault. Shown temporarily if limited
functionality fault. Will be necessary to access diagnostic menu to determine fault.
1. 2. 3. 4. 5. 6.

Disconnect the machine from the electrical outlet at all times
during repair and test. Failure to do so could result in electric
shock or personal injury.
Recommended tools to repair DP04 and TP04:
Torx T-15 screwdriver (magnetic if possible)
Torx T-10 screwdriver (magnetic if possible)
Torx T-8 screwdriver (magnetic if possible)
Thin flat bladed screwdriver
Long nosed pliers
Wire colours may vary between territories.
All screws used in DP04 and TP04 are Torx unless otherwise stated.
Where this symbol is shown ensure ESD
(Electro Static Discharge) protection is used.
Repair notes
General information
Ensure that at all times during the repair and testing of products
that customers, pets, children and you are not exposed to any
Live electrical supply.
08
Some female terminal clips used in DP04 and TP04 contain a
locking mechanism. The release pip will need to be activated
before separation from the male terminal can occur.
Important: this product contains a WiFi PCB that stores critical data.
If a WiFi PCB requires replacement the data will require reinstalling following the repair.
The necessary equipment is not currently available, therefore any machines requiring a WiFi
PCB replacement cannot be repaired until further notice.
A further issue of this manual will be released providing full instructions of the procedure
when the equipment becomes available.
It is a mandatory requirement that when handling any
product during any repair or refurbishment process that
the following equipment is worn:
• FPP3 particle filter Face mask
• Safety gloves
• Safety glasses
• Safety shoes

02 Remove the two shrouds and HEPA
filters.
01 Press the left and right filter release buttons on either side of the product.
03 Remove the two Carbon filters.
Repair notes
Full dismantle
09

05 Carefully lift the Amp assembly from
the Main body.
Note: the Amp will still be
connected by the Flow motor loom.
Disconnect the Flow mode motor
loom from the Main PCB and the
retaining feature.
10
04 Turn the machine upside down.
Remove the four 16mm T-10 screws from the front and rear of the machine holding the Amp
assembly to the Main body.

06 This diagram is to identify all PCB’s within the main body.
If the reason for the repair is to replace any of the PCB’s or sensors this can be done at this point.
Disconnect the affected PCB or sensor. Fit a new PCB or sensor ensuring the looms are retained as
shown in diagram above.
Note: the wifi PCB can not be replaced. The machine will have to be exchanged.
For Amp fitting instructions go page 29 step 48.
* Offered together as one assembly ‘Sensor PCB service assembly’.
11
LCD display
Main PCB Wifi PCB
Dust sensor
VOC sensor*
Sensor satelite*
Temperature/
Humidity sensor
Note: the LCD display is secured with a locking mechanism that will need to be opened
before removing/replacing.

07
08 Disconnect the Motor loom from
the Main PCB assembly.
07 Remove the motor to AMP seal.
09 Release the Motor loom grommet
from the main body and guide the
connector through the hole.
12

07 09
10 Carefully release the three Motor bucket catches from around the main body.
11 Carefully lift the Motor and bucket
assembly out of the main body.
For Motor and bucket fitting
instructions go page 24 step 39.
If the reason for the repair is to
replace the Lower body assembly
proceed to the next step.
13

13 Lift the Filter catch assembly up and
away from the Main body.
14 Disconnect the Oscillation and
Main power connectors from the
Main PCB.
For ease, first disconnect the Sensor
input harness assembly.
12 Remove the two 7mm T-8 screws
holding the right handside filter
catch assembly.
14

16 Remove the five 12mm T-15 screws
from the inside of the main body.
15 Carefully release the two looms
from the retainers and the channel
in the side of the main body.
17 Lift the main body away from the
Oscillation housing.
If the reason for the repair is to
replace the Lower body service
assembly or any parts contained
within except the oscillation motor
control harness this can be done
now. If the reason for the repair is
to replace the harness go to the
next step.
15

19 Disconnect the IR sensor loom from
the IR sensor.
18 Disconnect the Oscillation motor
control harness from the Oscillation
motor.
16
20 Open the grommet clip.

17
21 Release the grommets from the
grommet clip.
22 Release the Grommets from the
retainer.

18
24 Connect the harness to the
Oscillation motor.
25 Locate the first two grommets
together and locate into the
grommet clip.
23 Connect the new Oscillation motor
control harness to the IR sensor.
Repair notes
Full rebuild