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Old 10-07-2015, 11:36 PM   #11
onemanvan
 
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Default Re: Espar Heater Continued - Diagnostics Adapter

Good feedback/insights - Indeed we have D4S - important distinction - does signify 'Super Charged' air flow/output/CFM - probably as you surmise due to additional/longer ductwork.

The only controller I'm aware of that can read Edith diagnostic codes is:

JE-Diagnosegerat 221545890000

http://standheizung-ersatzteile.com/...diagnosegeraet

However, I do not know if it can control our D4S heater with it's custom ECU...
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Old 10-08-2015, 08:57 PM   #12
Wasaabi
 
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Default Re: Espar Heater Continued - Diagnostics Adapter

Onemanvan that is such useful info. I wish I had known prior to driving myself nuts about why the central electronics were no longer controlling the Espar once I replaced the ECU.

Just for kicks, I'll also point out the behavior with the new ECU and the Westfalia central electronics was that the fan on the Espar would turn on and run at max. That was it. No heat. Investigating further, it seemed to be a maintenance mode of some sort on the Espar. So the Westfalia was communicating, just not correctly.

Not sure but this may give some sort of clue to a work around to using the digimax with the Espar and Westfalia controller. I suspect the difference is in the diagnostics wire (which doesn't have to be connected to the digimax to operate). Of course that would skip the most useful function of diagnostics, but at least it would allow someone to bypass the central electronics in case of failure, or relocate the thermostat to better spot reachable from top bunk.
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Old 01-21-2016, 10:06 PM   #13
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Default Re: Espar Heater Continued - Diagnostics Adapter

Having trouble w/ my espar airtronic. (Grrr)
1. changed to high elevation pump in Apr '14. Worked fine, never tested in high elevation yet.
2. exercised it ~4 times since then, successfully
3. tried it a week ago and it did not respond, not start, no nothing.
4. checked power - good
5. performed controller bypass troubleshooting technique of jumping power to yellow wire - no nothing.
6. i suspect there may be an ECU lockout going on.
7. I don't have a digi-controller to read codes or reset.
8. No dealer or service outlet found in central texas

Does anyone have a digi-controller and adapter harness to use on our configuration that they would be willing to mail to me? Will compensate you and return it.
My alternative now is to buy the digi-controller (quoted at $280 by Greg at Lubrication Specialists, ouch!) but he no longer has or makes the adapter harness. So would still be unable to read codes or reset.

Any ideas?
Thanks
David

Last edited by 512Westy; 01-21-2016 at 10:13 PM.
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Old 01-21-2016, 10:44 PM   #14
onemanvan
 
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Default Re: Espar Heater Continued - Diagnostics Adapter

Did you have the grey and grey/red wire disconnected/out of circuit when you applied 12vdc to the yellow wire?
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Old 01-21-2016, 11:31 PM   #15
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Default Re: Espar Heater Continued - Diagnostics Adapter

PM'd you David.
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Old 01-21-2016, 11:51 PM   #16
OldWest
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Default Re: Espar Heater Continued - Diagnostics Adapter

1. May need to borrow a digicontroller and wiring harness to reset (seems like it works for some posters to reset and not for others). We now know that we have special Westy programming.

Airstream Service Center in Ohio has (or at least used to) a notebook computer with the Espar EDITH software and a wiring harness which connects to the wiring (so no removal of heater).

2. Check other thread on German Manuals. OneManVan ran through translation which shows Central Computer Console can show bunch of faults.

Maybe printout manual and find someone who can read German.

3. Wasaabi also indicated the Westfalia Service Manual has singular info on using central computer console--maybe search ther manual.

4. From experience, I do not think the high altitude pump works at all altitudes. May work for awhile. Seems the two pump setup works better.

5. Greg must still have one wiring harness to service and read our heaters unless he's not going to service Westy Espar heaters.

Any Espar dealer can just splice into our wiring harness as long as they know which wire is what. Other posters have had ThermoKing dealers do exactly that.

Greg hard-spliced a parallel harness with right Espar connector on mine (the connector just dangles). Have never tried it out. Mine is also on blink but will probably just get around to sending to Greg someday for maintenance again.
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Old 01-22-2016, 04:58 AM   #17
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Default Re: Espar Heater Continued - Diagnostics Adapter

Hi OneManVan, yes, i had the connector (under the seat) unhitched to access the yellow lead so the grey was also disconnected. I also performed the same jumping routine from the connector at the heater box, so the entire connector had been opened up to access the terminals, so again w/ that method, grey was disconnected.

Thanks for tips OldWest, I'm going to visit Thermo King tomorrow am, but don't have much hope since i spoke with tech there today and they only work on Espar units that are tied into another A/C system and is controlled w/ another controller interface, so not sure diagnostics will be compatible. I was surprised to hear that our unit (stand alone D4 unit) is such an unknown entity in the trucking world, but maybe that's just down here in texas where no one is looking for a heater much. we pay much more attention to A/C!
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Old 01-22-2016, 03:51 PM   #18
onemanvan
 
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Default Re: Espar Heater Continued - Diagnostics Adapter

Error codes that might cause lockout:

F12 overheating, disconnection via fuel pump * 1 air duct clogged
F13 overtemperature Flame sensor * 2 air duct clogged
* 1 controller locks after four fault indication
* 2 controller locks after a single fault indication

050 Too many failed start attempts (operating lock-out)
The control box locks after too many failed start attempts (max. 255 start attempts).
Unlock the control box by deleting the fault memory with the timer, the
diagnostic unit, EDiTH diagnostic tool, the TP5 radio remote control /
EasyStart R+ and the EasyStart T timer.

Connections at rear of central electronic control module:

21 Heating control (+ 12V) 0.5 ge (controller Heating B14)
22 . Error Detection heating 0.5 bl / ws (controller Heating B04)
23 control voltage Heating (+1 .... + 2.5V) 0.5 gr / rt (controller Heating B07)
24 Reference voltage heating (+ 1.75V ) 0.5 g (controller Heating B08)

Connection of control unit and external sensor according to “control units” circuit diagram
• rt Power supply, plus – terminal 30
• ge Switch-on signal – S+
• gr Temperature – actual value
• wsrt Switch off the anti-theft alarm system
(ADR – feedback signal for timer)
• br Power supply, minus – terminal 31
• blws Diagnosis
• grrt Temperature – setpoint
• brws Ground connection for external temperature sensor
and temperature setpoint

Cable colours circuit diagrams
sw = black
ws = white
rt = red
ge = yellow
gn = green
vi = violet
br = brown
gr = grey
bl = blue
li = purple
Attached Files
File Type: pdf Eberspacher_Airtronic_D4S_Workshop_Manual.pdf (5.91 MB, 22 views)
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Old 01-22-2016, 05:29 PM   #19
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Default Re: Espar Heater Continued - Diagnostics Adapter

If you notice white smoke coming out the exhaust:


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Old 01-22-2016, 05:30 PM   #20
onemanvan
 
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Default Re: Espar Heater Continued - Diagnostics Adapter

Overview of heater operation:

https://www.youtube.com/watch?list=P...&v=guN0ZtemeO4
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