Volkswagen Heater: Difference between revisions

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VW heater P/N are:
[[File:VW heater.jpg|thumb]]


* 3Q0963231A
== General Information <ref>http://datasheets.dbk-worldwide.com/EN/Datasheets/WireHeaters/DBKITM_HV%20Water%20heater_eng.pdf (Backup: [http://web.archive.org/web/20221016161226/http://datasheets.dbk-worldwide.com/EN/Datasheets/WireHeaters/DBKITM_HV%20Water%20heater_eng.pdf Web Archive])</ref> ==
* 3Q0963231C
* 3Q0963231E
[[File:VW heater.jpg|thumb]]  


LIN messages for the water heater:
* Operating Voltage: 280VDC - 450VDC
* Power: 5kW (7kW "boost" between 350-450V)
* Control via LIN by integrated electronics
* Temperature control by integrated sensor
* 3d Scan: [https://grabcad.com/library/vw-egolf-gte-electric-water-heater-1 https://grabcad.com/]
* Must be used in an inverted orientation with the sockets situated below as air can be left trapped in the heater element zone causing steam to be explosively generated


The feedback comes on ID48. 
== Dimensions ==


Byte 0 is power. 13 for 770W, 26 for 1540W 
* Fluid connection (mm): 20 (Nozzle dimensions according to DIN3021-3<ref>https://web.archive.org/web/20250109134824/https://images.carid.com/mubea/items/pdf/hose-spring-band-clamp-brochure.pdf</ref>)
* Dimensions L x W x H (mm): 210 x 73 x175
* Weight (kg): ~1,7 <br />


Byte 6 and 7 are temp in and temp out   
== Pinout/Connectors ==
[[File:VW heater connectors (annotated) V2.jpg|thumb]]


ID28 is sent for control, every 50ms


Byte 0 is power, last bit of byte 1 starts and stops
HV connector: TE 4-2103177-5 (HVA 280 series - key "E")
* HV+ near to the body,


*HV- far from the body




HV cable P/N is 3Q0971475 or 5Q0971475.  
LV connector: TE 1-1394416-1
 
* Pin 1 is permanent 12V
* Pin 2 is GND
*Pin 4 is LIN
*Pin 5 is HV Interlock loop passthrough (ref. right terminal highlighted with Blue in picture)
*Pin 7 is HV interlock loop passthrough (ref. left terminal highlighted with Blue in picture)
 


LV connector looks like it is Webasto 1J0973714 8P type.




HV connector HVA 280 KEY_E from TE
==LIN Bus Communication ==


* +HV near to the body,
  {| class="wikitable"
|+Control and Answer Messages from/to Heater<ref>https://openinverter.org/forum/viewtopic.php?p=26604#p26604</ref>
!ID
!Description
!Length
!Checksum Type
!Byte 0
!Byte 1
!Byte 2
! Byte 3
!Byte 4
!Byte 5
!Byte 6
!Byte 7
|-
|Dec: 28
Hex: 0x1C


* -HV far from the body
PID: 0x9C
|Control, every 50ms
|2
|Enhanced
|Power
0-100%


scale: x1
| Last bit: Start/Stop
|
|
|
|
|
|
|-
|Dec: 48
Hex: 0x30


LV Connector 1J0973714
PID: 0xF0
|Feedback
|8
|Enhanced
|HV Current:
Unit: Amp
Scale: 0.25
|??
|??
|??
|LV Voltage:
Unit: Volt
Scale: 0.1
|Module Temp
Unit: Celcius
offset:-50
|Temperature in
Unit: Celsius
offset:-50
|Temperature out
Unit: Celsius
offset:-50
|}
==VW Part Numbers==


* Pin 1 is permanent 12V
Heater:
* Pin 2 is GND
 
* Pin 4 is LIN
*3Q0 963 231 A
*3Q0 963 231 C
*3Q0 963 231 E
 
 
Cable assemblies:
 
* HV cable is 3Q0 971 475 or 5Q0 971 475
* LV cable appears to be 1J0 973 714
 
==References==
<references />
[[Category:VAG]]
[[Category:Heater Coolant]]

Latest revision as of 08:54, 23 April 2025

VW heater.jpg

General Information [1]

  • Operating Voltage: 280VDC - 450VDC
  • Power: 5kW (7kW "boost" between 350-450V)
  • Control via LIN by integrated electronics
  • Temperature control by integrated sensor
  • 3d Scan: https://grabcad.com/
  • Must be used in an inverted orientation with the sockets situated below as air can be left trapped in the heater element zone causing steam to be explosively generated

Dimensions

  • Fluid connection (mm): 20 (Nozzle dimensions according to DIN3021-3[2])
  • Dimensions L x W x H (mm): 210 x 73 x175
  • Weight (kg): ~1,7

Pinout/Connectors

VW heater connectors (annotated) V2.jpg


HV connector: TE 4-2103177-5 (HVA 280 series - key "E")

  • HV+ near to the body,
  • HV- far from the body


LV connector: TE 1-1394416-1

  • Pin 1 is permanent 12V
  • Pin 2 is GND
  • Pin 4 is LIN
  • Pin 5 is HV Interlock loop passthrough (ref. right terminal highlighted with Blue in picture)
  • Pin 7 is HV interlock loop passthrough (ref. left terminal highlighted with Blue in picture)



LIN Bus Communication

Control and Answer Messages from/to Heater[3]
ID Description Length Checksum Type Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7
Dec: 28

Hex: 0x1C

PID: 0x9C

Control, every 50ms 2 Enhanced Power

0-100%

scale: x1

Last bit: Start/Stop
Dec: 48

Hex: 0x30

PID: 0xF0

Feedback 8 Enhanced HV Current:

Unit: Amp Scale: 0.25

?? ?? ?? LV Voltage:

Unit: Volt Scale: 0.1

Module Temp

Unit: Celcius offset:-50

Temperature in

Unit: Celsius offset:-50

Temperature out

Unit: Celsius offset:-50

VW Part Numbers

Heater:

  • 3Q0 963 231 A
  • 3Q0 963 231 C
  • 3Q0 963 231 E


Cable assemblies:

  • HV cable is 3Q0 971 475 or 5Q0 971 475
  • LV cable appears to be 1J0 973 714

References

  1. ↑ http://datasheets.dbk-worldwide.com/EN/Datasheets/WireHeaters/DBKITM_HV%20Water%20heater_eng.pdf (Backup: Web Archive)
  2. ↑ https://web.archive.org/web/20250109134824/https://images.carid.com/mubea/items/pdf/hose-spring-band-clamp-brochure.pdf
  3. ↑ https://openinverter.org/forum/viewtopic.php?p=26604#p26604
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