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]]  
* 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


LIN messages for the water heater: 
== Dimensions ==


* Feedback comes on ID48, 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>)
* ID28 is sent for control, Byte 0 is power, last bit of byte 1 starts and stops
* Dimensions L x W x H (mm): 210 x 73 x175
* Weight (kg): ~1,7 <br />


== Pinout/Connectors ==
[[File:VW heater connectors (annotated) V2.jpg|thumb]]


HV cable P/N is 3Q0971475 or 5Q0971475.


LV connector looks like it is Webasto 1J0973714 8P type.
HV connector: TE 4-2103177-5 (HVA 280 series - key "E")
* HV+ near to the body,


*HV- far from the body


HV connector HVA 280 KEY_E from TE


* +HV near to the body,
LV connector: TE 1-1394416-1


* -HV far from the body
* 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 ==
 
  {| 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


PID: 0x9C
|Control, every 50ms
|2
|Enhanced
|Power
0-100%


LV Connector 1J0973714
scale: x1
| Last bit: Start/Stop
|
|
|
|
|
|
|-
|Dec: 48
Hex: 0x30


* Pin 1 is permanent 12V
PID: 0xF0
* Pin 2 is GND
|Feedback
* Pin 4 is LIN
|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==
<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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