PHILIPS AC3420 AC3421 Air Purifier and Humidifier Owner’s Manual
- September 13, 2024
- Philips
Table of Contents
PHILIPS AC3420 AC3421 Air Purifier and Humidifier
Change List
| Version | Detail | Remark | Date | Owner |
|---|
1.0
| ****
Initial Service manual
| ****
NA
| ****
2024.5.24
| ****
CC Chen
2.0
| ****
Add service part list:
AC3421/13 EU & AC3420/10 UK
| ****
NA
| ****
2024.6.20
| ****
CC Chen
3.0
| ****
Add service part list:
AC3421/13 UK & AC3420/10 RU
| ****
NA
| ****
2024.7.22
| ****
CC Chen
| | | |
| | | |
| | | |
| | | |
Product Overview
Control Overview
Safety precautions
- This manual is only for maintenance professionals reference.
- Non-professionals do not disassemble the machine, So as not to cause injury to the adult body
- Please turn off and unplug the power cord when the appliance is maintained.
- Please use the same type of parts and components in the machine during repair and replacement parts.
Tips for disassembling
- During repair, the parts should be disassembled according to actual n eeds.
- During repair, please pay more attention to each spare part in order to avoid damage, especially to prevent PCB from static electricity damage.
- After repair, assemble each part in reverse order. wrong-assembling and miss-assembling should be forbidden.
- During repair, please pay more attention to safety when test appliance with electricity.
Tool
- Cross Sc rewdriver
- Straight Sc rewdriver
- Normal tools
DISASSEMBLY INSTRUCTION
Before you start dismantling!
For your safety be sure the plug is disconnected from the mains! If installation, perform the reverse operation, then test the basic functions accordingly.
- Take the Front cover/Filter/Wick/water tank/the front cover of water tank out and remove 4pcs screws
- Remove five screws from the base, take out the base cover , three Ball hole plugs and DC JACK cover, then remove 2pcs screws and 2pcs fixing parts, finally remove 2pcs screws from HALL board.
- Remove 8pcs screws from the real cover and 4pcs screws from the top cover, then take out the sensor cover, three filter balls, three springs, the cable of DC Jack and the cable of the control PCBA.
- Take out the sensor and remove two screws from the temperature and humidity sensor, then take out the cable of the sensor ,the cable of HALL board and Hall board, remove 8pcs screws from lower filter housing and the related parts.
- Remove 8pcs screws from the upper filter housing and the related parts
- . Remove the related parts from the fan.
- . Remove 5pcs screws from the Impeller bracket cover and 3pcs screws from the motor
- Remove 3cs screws from the Rubber buffer and take out the cable of motor and Impeller bracket
- Remove 6pcs screws from the top cover and take out the Light Guide
- Remove 4pcs screws from the control board and take out the Light ring band.
PART LIST
SERVICE PART LIST Unicorn 2-in-1 AC3420/10 EU (688001001348)
| Item | Philips 12NC | PCM CODE | Part Name-English |
|---|---|---|---|
| 1,2,3,4 | 642001015280 | 12870121CNOC02 | UI panel ASSY AC3420/10 EU |
| 5 | 642001015283 | 8001001348 | Main PCBA AC3420/10 EU |
| 6 | 642001015125 | 30409060329 | Light ring band |
| 7 | 642001015126 | 22880NC8001 | Light Guide |
| 8 | 642001015127 | 22880WH8002 | Top housing |
| 9 | 642001015128 | 30307070073 | Compessing spring |
| 10 | 642001015132 | 30106BK0040 | Filter Compessing Ball |
| 12 | 642001011100 | 31105000076 | HEPA+AC FILTER FY3400 |
| 13,53,54,55 | 642001015133 | 12880121CNOC12 | Upper filter bracket assy |
| 14 | 642001015134 | 30102BK0059 | Impeller inlet grill |
| 15,16,17,23,25 | 642001015284 | 12870121CNOC01 | Front housing assy (Philips |
Logo)
18| 642001015136| 31604030008| M8 Left thread locknut
19| 300008365241| 31606010035| D-shaped washer
20| 642001015138| 30101BK1422| Impeller with 8MM shaft hole
21| 300008362851| 31606010001| Washer
22| 642001015139| 22880BK8004| Impeller bracket cover
24| 642001015143| 22880BK8003| Impeller bracket
26| 642001015285| 22870WH8001| Wick supporter
27| 642001015144| 30902010064| Double shaft motor
28| 642001015145| 30305070019| Motor bracket
29| 642001015146| 30111BK0107| Rubber buffer
30| 642001015148| 30101BK1421| Impeller with 6MM shaft hole
31| 642001015142| 31606010036| φ6 D-shaped washer
32| 642001008019| 31103000059| WICK,PET, FY3401/00
33,35,40,41,42| 642001015287| 12870121CNOC04| Water tank ASSY
34| 996510079889| 22866WH8014| Floating
36,44,47,48| 642001015288| 12870121CNOC03| Lower filter bracket assy
37| 642001015289| 30101BK1426| Ball hole plug
38| 642001015290| 30409060335| Hall detection PCBA
39| 642001015291| 30101BK0306| Fixed part
43| 642001015155| 22880WH8001| Bottom housing
45| 642001015114| 30107BK0011| DC Jack cover
46| 642001015151| 30409060331| DC Jack with wires
51| 642001015147| 31606010010| φ6 Washer
56| 642001014974| 31001020022| Particle sensor
58| 642001015293| 30409060334| Temperature and humidity PCBA
59,60| 642001015294| 12880121CNOC06| Sensor cover with silk-screen and Foam
61| 642001015295| 12880121CNOC09| Rear housing + label
70| 642001015255| 30501430020| POWER ADAPTER 24V/2A
| 642001015256| 30602110017| Cable from T&H PCBA to control PCBA
| 642001015257| 30602040115| Cable from motor to control PCBA
| 642001015258| 30602030118| Cable from sensor to T&H PCBA
| 642001015298| 30602020324| Cable from hall detection PCBA to T&H PCBA
SERVICE PART LIST Unicorn 2-in-1 AC3420/10 UK (688001001349)
| Item | Philips 12NC | PCM CODE | Part Name-English |
|---|---|---|---|
| 1,2,3,4 | 642001015280 | 12870121CNOC02 | UI panel ASSY AC3420/10 EU |
| 5 | 642001016675 | 8001001349 | Main PCBA AC3420/10 UK |
| 6 | 642001015125 | 30409060329 | Light ring band |
| 7 | 642001015126 | 22880NC8001 | Light Guide |
| 8 | 642001015127 | 22880WH8002 | Top housing |
| 9 | 642001015128 | 30307070073 | Compessing spring |
| 10 | 642001015132 | 30106BK0040 | Filter Compessing Ball |
| 12 | 642001011100 | 31105000076 | HEPA+AC FILTER FY3400 |
| 13,53,54,55 | 642001015133 | 12880121CNOC12 | Upper filter bracket assy |
| 14 | 642001015134 | 30102BK0059 | Impeller inlet grill |
| 15,16,17,23,25 | 642001015284 | 12870121CNOC01 | Front housing assy (Philips |
Logo)
18| 642001015136| 31604030008| M8 Left thread locknut
19| 300008365241| 31606010035| D-shaped washer
20| 642001015138| 30101BK1422| Impeller with 8MM shaft hole
21| 300008362851| 31606010001| Washer
22| 642001015139| 22880BK8004| Impeller bracket cover
24| 642001015143| 22880BK8003| Impeller
26| 642001015285| 22870WH8001| brWacikcektsupporter
27| 642001015144| 30902010064| Double shaft motor
28| 642001015145| 30305070019| Motor bracket
29| 642001015146| 30111BK0107| Rubber buffer
30| 642001015148| 30101BK1421| Impeller with 6MM shaft hole
31| 642001015142| 31606010036| φ6 D-shaped washer
32| 642001008019| 31103000059| WICK,PET, FY3401/00
33,35,40,41,42| 642001015287| 12870121CNOC04| Water tank ASSY
34| 996510079889| 22866WH8014| Floating
36,44,47,48| 642001015288| 12870121CNOC03| Lower filter bracket assy
37| 642001015289| 30101BK1426| Ball hole plug
38| 642001015290| 30409060335| Hall detection PCBA
39| 642001015291| 30101BK0306| Fixed part
43| 642001015155| 22880WH8001| Bottom housing
45| 642001015114| 30107BK0011| DC Jack cover
46| 642001015151| 30409060331| DC Jack with wires
51| 642001015147| 31606010010| φ6 Washer
56| 642001014974| 31001020022| Particle sensor
58| 642001015293| 30409060334| Temperature and humidity PCBA
59,60| 642001015294| 12880121CNOC06| Sensor cover with silk-screen and Foam
61| 642001015295| 12880121CNOC09| Rear housing + label
70| 642001016587| 30501430027| POWER ADAPTER 24V/2A
| 642001015256| 30602110017| Cable from T&H PCBA to control PCBA
| 642001015257| 30602040115| connecting wire from motor to control PCBA
| 642001015258| 30602030118| connecting wire from sensor to T&H PCBA
| 642001015298| 30602020324| Cable from hall detection PCBA to T&H PCBA
SERVICE PART LIST Unicorn 2-in-1 AC3421/13 EU (688001001408)
| Item | Philips 12NC | PCM CODE | Part Name-English |
|---|---|---|---|
| 1,2,3,4 | 642001016681 | 12870121CNOC07 | UI panel ASSY AC3421/13 EU |
| 5 | 642001016664 | 8001001408 | Main PCBA AC3421/13 EU |
| 6 | 642001015125 | 30409060329 | Light ring band |
| 7 | 642001015126 | 22880NC8001 | Light Guide |
| 8 | 642001016656 | 22880GY8006 | Top housing |
| 9 | 642001015128 | 30307070073 | Compessing spring |
| 10 | 642001015132 | 30106BK0040 | Filter Compessing Ball |
| 12 | 642001011100 | 31105000076 | HEPA+AC FILTER FY3400 |
| 13,53,54,55 | 642001015133 | 12880121CNOC12 | Upper filter bracket assy |
| 14 | 642001015134 | 30102BK0059 | Impeller inlet grill |
| 15,16,17,23,25 | 642001016665 | 12870121CNOC06 | Front housing assy (Philips |
Logo) AC3421
18| 642001015136| 31604030008| M8 Left thread locknut
19| 300008365241| 31606010035| D-shaped washer
20| 642001015138| 30101BK1422| Impeller with 8MM shaft hole
21| 300008362851| 31606010001| Washer
22| 642001015139| 22880BK8004| Impeller bracket cover
24| 642001015143| 22880BK8003| Impeller bracket
26| 642001015285| 22870WH8001| Wick supporter
27| 642001015144| 30902010064| Double shaft motor
28| 642001015145| 30305070019| Motor bracket
29| 642001015146| 30111BK0107| Rubber buffer
30| 642001015148| 30101BK1421| Impeller with 6MM shaft hole
31| 642001015142| 31606010036| φ6 D-shaped washer
32| 642001008019| 31103000059| WICK,PET, FY3401/00
33,35,40,41,42| 642001016667| 12870121CNOC05| Water tank ASSY AC3421 EU
34| 996510079889| 22866WH8014| Floating
36,44,47,48| 642001015288| 12870121CNOC03| Lower filter bracket assy
37| 642001015289| 30101BK1426| Ball hole plug
38| 642001015290| 30409060335| Hall detection PCBA
39| 642001015291| 30101BK0306| Fixed part
43| 642001016669| 22880GY8010| Bottom housing AC3421/13 EU
45| 642001015114| 30107BK0011| DC Jack cover
46| 642001015151| 30409060331| DC Jack with wires
51| 642001015147| 31606010010| φ6 Washer
56| 642001014974| 31001020022| Particle sensor
58| 642001015293| 30409060334| Temperature and humidity PCBA
59,60| 642001016658| 12880121CNOC19| Sensor cover with silk-screen and Foam
61| 642001015120| 12880121CNOC08| Rear housing + label
70| 642001016659| 30501430011| POWER ADAPTER 24V/2A
| 642001015256| 30602110017| Cable from T&H PCBA to control PCBA
| 642001015257| 30602040115| Cable from motor to control PCBA
| 642001015258| 30602030118| Cable from sensor to T&H PCBA
| 642001015298| 30602020324| Cable from hall detection PCBA to T&H PCBA
SERVICE PART LIST Unicorn 2-in-1 AC3420/10 RU (688001001390)
| Item | Philips 12NC | PCM CODE | Part Name-English |
|---|---|---|---|
| 1,2,3,4 | 642001015280 | 12870121CNOC02 | UI panel ASSY |
| 5 | 642001017932 | 8001001390 | Main PCBA AC3420/10 RU |
| 6 | 642001015125 | 30409060329 | Light ring band |
| 7 | 642001015126 | 30103TP0173 | Light Guide |
| 8 | 642001015127 | 22880WH8002 | Top housing |
| 9 | 642001015128 | 30307070073 | Compessing spring |
| 10 | 642001015132 | 30106BK0040 | Filter Compessing Ball |
| 12 | 642001011100 | 31105000076 | HEPA+AC FILTER FY3400 |
| 13,53,54,55 | 642001015133 | 12880121CNOC12 | Upper filter bracket assy |
| 14 | 642001015134 | 30102BK0059 | Impeller inlet grill |
| 15,16,17,23,25 | 642001015284 | 12870121CNOC01 | Front housing assy (Philips |
Logo)
18| 642001015136| 31604030008| M8 Left thread locknut
19| 300008365241| 31606010035| D-shaped washer
20| 642001015138| 30101BK1422| Impeller with 8MM shaft hole
21| 300008362851| 31606010001| Washer
22| 642001015139| 22880BK8004| Impeller bracket cover
24| 642001015143| 22880BK8003| Impeller bracket
26| 642001015285| 22870WH8001| Wick supporter
27| 642001015144| 30902010064| Double shaft motor
28| 642001015145| 30305070019| Motor bracket
29| 642001015146| 30111BK0107| Rubber buffer
30| 642001015148| 30101BK1421| Impeller with 6MM shaft hole
31| 642001015142| 31606010036| φ6 D-shaped washer
32| 642001008019| 31103000059| WICK,PET, FY3401/00
33,35,40,41,42| 642001015287| 12870121CNOC04| Water tank ASSY
34| 996510079889| 22866WH8014| Floating
36,44,47,48| 642001015288| 12870121CNOC03| Lower filter bracket assy
37| 642001015289| 30101BK1426| Ball hole plug
38| 642001015290| 30409060335| Hall detection PCBA
39| 642001015291| 30101BK0306| Fixed part
43| 642001015155| 22880WH8001| Bottom housing
45| 642001015114| 30107BK0011| DC Jack cover
46| 642001015151| 30409060331| DC Jack with wires
51| 642001015147| 31606010010| φ6 Washer
56| 642001014974| 31001020022| Particle sensor
58| 642001015293| 30409060334| Temperature and humidity PCBA
59,60| 642001015294| 12880121CNOC06| Sensor cover with silk-screen and Foam
61| 642001015295| 12880121CNOC09| Rear housing + label
70| 642001015255| 30501430020| POWER ADAPTER 24V/2A EU
| 642001015256| 30602110017| connecting wire from T&H PCBA to control PCBA
| 642001015257| 30602040115| connecting wire from motor to control PCBA
| 642001015258| 30602030118| connecting wire from sensor to T&H PCBA
| 642001015298| 30602020324| Cable from hall detection PCBA to T&H PCBA
SERVICE PART LIST Unicorn 2-in-1 AC3421/13 UK (688001002079)
| Item | Philips 12NC | PCM CODE | Part Name-English |
|---|---|---|---|
| 1,2,3,4 | 642001016681 | 12870121CNOC07 | UI panel ASSY AC3421/13 EU |
| 5 | 642001017935 | 8001002079 | Main PCBA AC3421/13 UK |
| 6 | 642001015125 | 30409060329 | Light ring band |
| 7 | 642001015126 | 30103TP0173 | Light Guide |
| 8 | 642001016656 | 22880GY8006 | Top housing |
| 9 | 642001015128 | 30307070073 | Compessing spring |
| 10 | 642001015132 | 30106BK0040 | Filter Compessing Ball |
| 12 | 642001011100 | 31105000076 | HEPA+AC FILTER FY3400 |
| 13,53,54,55 | 642001015133 | 12880121CNOC12 | Upper filter bracket assy |
| 14 | 642001015134 | 30102BK0059 | Impeller inlet grill |
| 15,16,17,23,25 | 642001016665 | 12870121CNOC06 | Front housing assy (Philips |
Logo) AC3421
18| 642001015136| 31604030008| M8 Left thread locknut
19| 300008365241| 31606010035| D-shaped washer
20| 642001015138| 30101BK1422| Impeller with 8MM shaft hole
21| 300008362851| 31606010001| Washer
22| 642001015139| 22880BK8004| Impeller bracket cover
24| 642001015143| 22880BK8003| Impeller bracket
26| 642001015285| 22870WH8001| Wick supporter
27| 642001015144| 30902010064| Double shaft motor
28| 642001015145| 30305070019| Motor bracket
29| 642001015146| 30111BK0107| Rubber buffer
30| 642001015148| 30101BK1421| Impeller with 6MM shaft hole
31| 642001015142| 31606010036| φ6 D-shaped washer
32| 642001008019| 31103000059| WICK,PET, FY3401/00
33,35,40,41,42| 642001016667| 12870121CNOC05| Water tank ASSY AC3421 EU
34| 996510079889| 22866WH8014| Floating
36,44,47,48| 642001015288| 12870121CNOC03| Lower filter bracket assy
37| 642001015289| 30101BK1426| Ball hole plug
38| 642001015290| 30409060335| Hall detection PCBA
39| 642001015291| 30101BK0306| Fixed part
43| 642001016669| 22880GY8010| Bottom housing AC3421/13 EU
45| 642001015114| 30107BK0011| DC Jack cover
46| 642001015151| 30409060331| DC Jack with wires
51| 642001015147| 31606010010| φ6 Washer
56| 642001014974| 31001020022| Particle sensor
58| 642001015293| 30409060334| Temperature and humidity PCBA
59,60| 642001016658| 12880121CNOC19| Sensor cover with silk-screen and Foam
61| 642001015120| 12880121CNOC08| Rear housing + label
70| 642001017956| 30501430012| POWER ADAPTER 24V/2A UK/ME
| 642001015256| 30602110017| connecting wire from T&H PCBA to control PCBA
| 642001015257| 30602040115| connecting wire from motor to control PCBA
| 642001015258| 30602030118| connecting wire from sensor to T&H PCBA
| 642001015298| 30602020324| Cable from hall detection PCBA to T&H PCBA
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