View source for VW A/C Compressor

This type of compressor has been widely used in Volkswagen and Audi hybrid vehicles and can be found cheaply.

=== Part Numbers, Revisions and Refrigerant ===
The vehicle, date and refrigerant options have been scavenged from type stickers on compressors in ebay auctions. The list is not complete but supposed to give an overview.
{| class="wikitable"
|+
Overview of A/C Compressors used
!Part Number
!HW & SW Revision [https://openinverter.org/forum/viewtopic.php?p=35520#p35520]
!Vehicles
!Years
!Refrigerant
|-
| colspan="5" |'''12E820803x'''
|-
|12E820803B
|HW 4 - SW 4
|VW e-Golf VII, VW e-Up
|05.2014, 
|R134a
|-
|12E820803C
|HW 4 - SW 7
|Audi A3 1.4 TFSI e-tron
|12.2013, 03.2014
|R134a
|-
|12E820803D
|HW 5 - SW 4
|Audi A3 1.4 TFSI e-tron

??
|07.2015
07.2018
|R134a
R134a, R1234yf
|-
|12E820803E
|HW 2 - SW 5
|Audi A3 1.4 TFST e-tron
VW Passat B8 GTE
|03.2015, 09.2015
06.2016
|R134a
R134a, R1234yf
|-
| colspan="5" |'''5QE816803x'''
|-
|5QE816803
|HW 2 - SW 7
|Audi A3 1.4 TFSI e-tron
VW Golf VII GTE 

VW Passat B8 GTE 
|03.2015, 11.2015
08.2016, 08.2017
|R134a
R134a, R1234yf
|-
|5QE816803A
|HW 3 - SW 9
|
|
|
|-
|5QE816803C
|HW 2 - SW 6
|
|01.2018
|R134a, R1234yf
|-
|5QE816803D
|HW 2 - SW 8
|
|
|
|-
|5QE816803F
|HW 2 - SW 7
|
|07.2018
|R134a, R1234yf
|-
|5QE816803H
|HW 3 - SW 9
|VW Passat B8 GTE

|01.2016

|R134a

|-
|
|
|
|
|
|}
Generally the switch to R1234yf compatibility was around Juni 2016. The oil used for all compressors is 120ml PAG SP-A2.

=== LIN Bus Communication ===
{| class="wikitable"
|+Control and Answer Messages to/from the Compressor [https://openinverter.org/forum/viewtopic.php?p=25580#p25580]
!ID
!Description
!Length
!Checksum Type
!Byte 0
!Byte 1
!Byte 2
!Byte 3
!Byte 4
!Byte 5
!Byte 6
!Byte 7
|-
|31 (0x61)
|Answer from the compressor
|8
|Enhanced
|HV OK (0 for voltage < 200V, 1 for voltage > 200V)
|always 112
|?
|RPM set from command
|110 for V<200V, 14 for V>200V, 46 when running
|0
|0
|54 at 109V, 28 at 56V 83 at 166V 
scaling: Voltage/2
|-
|32 (0x20)
|Command to the compressor
|6
|Enhanced
|RPM (decimal from 20-250)
|Bit 0: Start, Bit 2: Activate
|0
|0
|0
|0
|
|
|}


=== Electrical Connection [https://openinverter.org/forum/viewtopic.php?p=25580#p25580] ===
connectors are:

HVA 280 KEY_D from TE +HV left side (near to the 12V conn.), -HV right side (far from the 12V conn)

1J0973714 8= +12V , 5= GND, 2= LIN



[[Category:OEM]] [[Category:VAG]] [[Category:HVAC]]
[[Category:Thermal Management]]