Chevrolet Volt Water Heater - Revision history

Johu: Added connector table

2026-01-11T13:41:54Z

Added connector table

@@ Line 44: / Line 44: @@
+}
 </syntaxhighlight>
 == CAN messaging ==

Johu: Added info about temp sensor and other CAN variant

2026-01-11T13:03:14Z

Added info about temp sensor and other CAN variant

Show changes

Johu: Added to HVAC category

2026-01-08T20:24:00Z

Added to HVAC category

← Older revision		Revision as of 20:24, 8 January 2026
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	[[Category:Opel]]		[[Category:Opel]]
	[[Category:Heater Coolant]]		[[Category:Heater Coolant]]
			[[Category:HVAC]]

Tom91: Categories

2024-12-20T16:16:01Z

Jason arnold at 22:39, 22 March 2022

2022-03-22T22:39:25Z

← Older revision		Revision as of 22:39, 22 March 2022
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	[[Category:Opel]]		[[Category:Opel]]
	[[Category:HVAC]]		[[Category:HVAC]]
			[[Category:Thermal Management]]

Crasbe: Added categories to the page to allow for better navigation and started a table with the CAN messages

2022-01-07T02:24:15Z

Added categories to the page to allow for better navigation and started a table with the CAN messages

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-It is 5kW Ebspracher coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others.
+It is 5kW Eberspächer coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others.
 This model is SW CAN controlled. https://leafdriveblog.wordpress.com/2018/12/05/5kw-electric-heater/
@@ Line 39: / Line 39: @@
 x102740CB,True,1,3,19,0,0,0,0,0,0,0
 Michael Neuweiler has published this wiring on his blog. http://s80ev.blogspot.com/2016/12/the-heat-is-on.html
@@ Line 45: / Line 100: @@
 Connecting using CAN board and Canalyst II does nothing since it is not normal CAN interface. This heater is supposed to work only with SW CAN transciever. Transciever should output a wake up signal for everything to work.
 One such SW transciever is NCV7356.

Crasbe: Crasbe moved page Chevy volt coolant heater to Chevrolet Volt Water Heater: Make titles consistent

2022-01-07T02:19:35Z

Crasbe moved page Chevy volt coolant heater to Chevrolet Volt Water Heater: Make titles consistent

← Older revision		Revision as of 02:19, 7 January 2022
(No difference)

Arber333 at 08:11, 10 December 2021

2021-12-10T08:11:41Z

Arber333 at 08:09, 10 December 2021

2021-12-10T08:09:59Z

← Older revision		Revision as of 08:09, 10 December 2021
Line 1:		Line 1:
	It is 5kW Ebspracher coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others.		It is 5kW Ebspracher coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others.
	This model is SW CAN controlled.		This model is SW CAN controlled. https://leafdriveblog.wordpress.com/2018/12/05/5kw-electric-heater/

	4 pin LV connector has SW CAN, ENABLE ~~and GND~~ pins.		3 pin LV connector has GND, SW CAN and ENABLE pins in that order.

	Temperature sensor is 3.2Kohm at 21degC. It is NTC type.		Temperature sensor is 3.2Kohm at 21degC. It is NTC type.

Arber333: Created page with "It is 5kW Ebspracher coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others. This model is SW CAN controlled. 4 pin L..."

2021-12-10T08:07:32Z

Created page with "It is 5kW Ebspracher coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others. This model is SW CAN controlled. 4 pin L..."

New page

It is 5kW Ebspracher coolant heater that works on 400Vdc. It is found in Chevrolet Volt gen1 and Opel Ampera cars as well as others.
This model is SW CAN controlled.

4 pin LV connector has SW CAN, ENABLE and GND pins.

Temperature sensor is 3.2Kohm at 21degC. It is NTC type.

This info from EVTV Forum:
The Eberspacher CAN version of their PTC liquid heater used in the Chevrolet Volt will work when used with a 33.33Kb SWCAN.
The data below is what we have found to be the minimum required to turn on and operate this heater.
This capture will operate the heater at approximately 33% of full power.
To command higher power, increase the value of message 0x10720099 byte 1 (it begins with byte 0) which is 3E below.
We saw full power heat when 85 was used as the value for byte 1 and that value will vary based upon inlet temperature.
The data below contains an entry for “Bus” and that refers to which CAN Bus of the 2 Buses on the CANDue recorded the original event.

ID,Extended,Bus,LEN,D0,D1,D2,D3,D4,D5,D6,D7
0x100,False,1,0,0,0,0,0,0,0,0,0
0x621,False,1,8,0,40,0,0,0,0,0,0
0x10720099,True,1,5,2,3E,0,0,0,0,0,0
0x13FFE060,True,1,0,0,0,0,0,0,0,0,0
0x10720099,True,1,5,2,3E,0,0,0,0,0,0
0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60
0x10242040,True,1,1,0,0,0,0,0,0,0,0
0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60
0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60
0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60
0x102740CB,True,1,3,2D,0,0,0,0,0,0,0
0x102740CB,True,1,3,19,0,0,0,0,0,0,0

Michael Neuweiler has published this wiring on his blog. http://s80ev.blogspot.com/2016/12/the-heat-is-on.html
https://1.bp.blogspot.com/-osB952BjJFM/V1HAdFRBpfI/AAAAAAAAAlE/3OND1f6nJLMi1ZS8arpRwGWIKpLRF65GwCPcB/s1600/gevcu_ext_layout.gif

Connecting using CAN board and Canalyst II does nothing since it is not normal CAN interface. This heater is supposed to work only with SW CAN transciever. Transciever should output a wake up signal for everything to work.
One such SW transciever is NCV7356.

← Older revision		Revision as of 16:16, 20 December 2024
Line 100:		Line 100:
	Connecting using CAN board and Canalyst II does nothing since it is not normal CAN interface. This heater is supposed to work only with SW CAN transciever. Transciever should output a wake up signal for everything to work.		Connecting using CAN board and Canalyst II does nothing since it is not normal CAN interface. This heater is supposed to work only with SW CAN transciever. Transciever should output a wake up signal for everything to work.
	One such SW transciever is NCV7356.		One such SW transciever is NCV7356.

	~~[[Category:OEM]]~~
	[[Category:Chevrolet]]		[[Category:Chevrolet]]
	[[Category:Opel]]		[[Category:Opel]]
	[[Category:~~HVAC]]~~		[[Category:Heater Coolant]]
	~~[[Category:Thermal Management~~]]

← Older revision		Revision as of 08:11, 10 December 2021
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	ID,Extended,Bus,LEN,D0,D1,D2,D3,D4,D5,D6,D7		ID,Extended,Bus,LEN,D0,D1,D2,D3,D4,D5,D6,D7

	0x100,False,1,0,0,0,0,0,0,0,0,0		0x100,False,1,0,0,0,0,0,0,0,0,0

	0x621,False,1,8,0,40,0,0,0,0,0,0		0x621,False,1,8,0,40,0,0,0,0,0,0

	0x10720099,True,1,5,2,3E,0,0,0,0,0,0		0x10720099,True,1,5,2,3E,0,0,0,0,0,0

	0x13FFE060,True,1,0,0,0,0,0,0,0,0,0		0x13FFE060,True,1,0,0,0,0,0,0,0,0,0

	0x10720099,True,1,5,2,3E,0,0,0,0,0,0		0x10720099,True,1,5,2,3E,0,0,0,0,0,0

	0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60		0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60

	0x10242040,True,1,1,0,0,0,0,0,0,0,0		0x10242040,True,1,1,0,0,0,0,0,0,0,0

	0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60		0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60

	0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60		0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60

	0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60		0x102CC040,True,1,8,1,1,CF,0F,0,51,46,60

	0x102740CB,True,1,3,2D,0,0,0,0,0,0,0		0x102740CB,True,1,3,2D,0,0,0,0,0,0,0

	0x102740CB,True,1,3,19,0,0,0,0,0,0,0		0x102740CB,True,1,3,19,0,0,0,0,0,0,0