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Old 10-03-2015, 02:47 PM   #1
Coleary00
 
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Default Espar Heater Continued - Diagnostics Adapter

So, at the recommendation of OldWest and OneManVan (you guys are awesome), I contacted Greg at lubrication specialist about my espar heater. I inquired about getting the Westfalia Diagnostics Adapter and Code Reader. He no longer offers the diagnostic adapter....

Is there somewhere else I can purchase one? Or does someone have an extra they are selling. Or..... Does someone want to ship me their Adapter and Code Reader, and I will give them $50 for letting me use them.

I am assuming my local espar dealer will not be able to help me at all without that adapter, am I right?

I apolgize If these questions are stupid, my knowledge is limited (that is why I have you guys!)

Thanks again,

Connor O'Leary
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Old 10-04-2015, 01:17 AM   #2
OldWest
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Default Re: Espar Heater Continued - Diagnostics Adapter

Years ago, before Greg had created the wiring adapter, I sent him my Espar heater and asked him to splice in an adapter to hook up the diagnostic readers.

So my Espar heater is connected up like normal with an extra connector I leave dangling out the corner of the metal enclosure (Westfalia could have done the same thing with the original Espar wiring rather than cutting off and using their own connector through the box).

Greg later developed that wiring adapter which plugs into Westy's connector.

So I don't have Greg's adapter which puts/inserts the dangling connector in the Westy wiring harness.

One could replicate either of the two options above. Might try asking Greg if he has any suggestions--maybe another wiring adapter with the right digi computer connector and info as which wires to splice together.

One or more other posters had gone to the truck dealers who service Espars and were able to splice in the right connector--so extra work.
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Old 10-04-2015, 01:25 AM   #3
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Default Re: Espar Heater Continued - Diagnostics Adapter

The truck/Espar dealers just need to know that Westfalia had cut off the end of the original Espar wiring to use the connectors attached to the metal enclosure box. So just a matter of knowing which wires are what (probably easier for Espar dealer to drop heater to see the original Espar wiring harness).
So doable if dealer is willing to do extra work.

I'd go with your borrowing wiring harness and digicontroller first.

If that doesn't work, then send to Greg for maintenance and repair (and see if he might splice in a dangling connector for future). Heater metal box is held on by 6 bolts.

If too inconvenient or timing not right, check for an Espar dealer.
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Old 10-04-2015, 01:26 AM   #4
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Default Re: Espar Heater Continued - Diagnostics Adapter

ThermoKing services Espars for trucks.
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Old 10-06-2015, 08:19 PM   #5
Robert Foster
 
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Default Re: Espar Heater Continued - Diagnostics Adapter

I wonder if this explains why I haven't received a reply from Lubrication Specialists to the email that I sent them two weeks ago regarding sending my Espar heater in for service and upgrading to the digital controller/diagnostic reader ?
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Old 10-07-2015, 06:50 AM   #6
GoJohnGo
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Default Re: Espar Heater Continued - Diagnostics Adapter

Unless you have the connector to the box, it's probably easier to access the wiring by removing the driver's seat. Six Allen bolts, two screws, and one connector. A five minute job, described in the Westy manual. I installed a High Altitude Compensator (writeup forthcoming) and am working on wiring a standard diagnostic connector that can be reached by just taking off the fuse panel under the seat.

The problem with removing the heater box is that there are fuel and electrical lines held by guides that are screwed into the sides of the box, and the screws can't be accessed until you drop the box (unless you happen to have a very small 90 degree powered screwdriver), placing a lot of stress on the lines. The heater's heavy, so having an assistant helps, but it's still a pain.
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Old 10-07-2015, 05:30 PM   #7
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Default Re: Espar Heater Continued - Diagnostics Adapter

If you do need to drop the heater as I did, use something like bricks to support it and then work your way through opening and disconnecting things. When you put it all back together, use cable ties and you can do a better job than the original which will make it easier to service in the future.

Greg can be slow with email. Try calling him. Or just send him your heaters. That's what I did. Then I think he called me.

I have a write up of how i installed the altitude compensator with a new ECU at the end of this thread.
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Old 10-07-2015, 08:22 PM   #8
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Default Re: Espar Heater Continued - Diagnostics Adapter

Here is what I think I know to be true about our Espar D4 ( model: 25 2293 05 00 00 )

The ECU in our Espar D4 Airtronic heater is custom ( pn: 22 5101 00 1702 )
Heater functions can only be controlled with the Westfalia central electronics module.
Diagnostic outputs are Edith and Daimler Chrysler IE: NO 'free running' diagnostics
The Digi-Max D1000 cannot control the heater - it is not compatible with the custom ECU.
The Digi-Max D1000 cannot display diagnostics - it only understands 'free-running' diagnostics.

If you install a standard D4 ECU ( pn: 22.5101.00.3005 )
The Westfalia central electronics will no longer control the heater.
You'll have to install something like a Digi-Max D1000.
The Digi-Max D1000 can understand the diagnostic output from the standard ECU.
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Old 10-07-2015, 09:56 PM   #9
OldWest
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Default Re: Espar Heater Continued - Diagnostics Adapter

Excellent info.

So now we know that in addition to our special D4S model (s designation is extra), we also have a unique ECU (or programming?).

Still unknown is whether one can wipe and reprogram the ECU if one wishes to bypass the Westfalia central computer console and use an Espar control. Or whether one must replace the ECU. (Why? If can't replace the central computer console in future or if want handier location for heater control.)

The special EDITH software from Espar can apparently read our heaters. Still need the right connector.

Only other twist is whether some folks have been able to get some version of the digi controller to reset heater and/or read some diagnostics. Would be nice if folks who have purchased the controller could chime in with Westy number, model/version of Espar controller and what they were able to do.

Unknown as to whether Westfalia changed custom programming during the different Westies.
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Old 10-07-2015, 10:12 PM   #10
OldWest
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Default Re: Espar Heater Continued - Diagnostics Adapter

Also unknown is whether a regular D4 will work in a Westy, even with an Espar controller.

The S designation apparently is for long ductwork applications. The D4 may have some sensor or other mechanism to shut-off if too much back-pressure or in our S version, increase air flow to compensate for the long ductwork.

Also unknown is whether the smaller D2 heater would work in our application. To reduce soot build-up, Greg recommends running these heaters at higher outputs rather than letting them idle. A smaller heater would run at higher level.

Worst comes to worst, one could just disconnect the ductwork to the bathroom and/or under the kitchen cabinet, and just have one or two outputs from the standard noncustom D4 or D2 heater.

Besides more even distribution of heat, the long ductwork also may have the benefit of keeping the various graywater and blackwater tanks warm.
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