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Servicing photos.

If you service a model we have not covered here we would like to incorporate the details and photos to help others.
We would need a full set of good or at least reasonable quality pictures and a description of each stage. Ideally photos should be high resolution as possible, on a cd or dvd if too big to send by email. We always acknowledge the source of such photos.

If your heater is really carboned up we would welcome detailed photos to add to our pages.
Photos of specific problems are also of interest.


Here are some of the older Eberspacher air heater models with brief details.
* Dates are a general indication only, nearly all are very much best guesses as date information is not published.
The data is provided as a rough guide, check carefully with the official Eberspacher information if it is critical.






  





Eberspacher  D3LCC   D3LC   D3LP  D3L   Heaters.
D3LCC   also known as D3LC Compact,   D3LP compact





D3L





Better quality photos wanted please.
Manufactured 1989*, replaced by D3LCC   1996

Automatic settings      Start   High   Med   Low   Standby.
Heat output                3500   2800  1500   1000    0  watts.
Fuel consumption                  0.34    0.18    0.12    0   l/hr.
Current 12v approx                   3        1          1       0  amps
Current 12v with glow pin on during start   approx 20 amps
Length 422,  Width 155,  Height 167   mm.
Combustion air inlet pipe 25mm, Exhaust outlet pipe 24mm.


Start current is double that of a D4 so thicker cables needed.
Not as easy to service as the D4, some parts of the heat exchanger cannot be reached for mechanical cleaning.


Spare parts availability   Reasonably ok.
Gaskets, glowpin and screen same as D3LCC.
10 to 20 years old so getting towards end of Eberspacher support for items like ECU.
Servicing information generally similar to D1LCC.
Manufactured 1996, replaced by Airtronic D4   2003*

Automatic settings      Boost   High   Med   Low   Standby.
Heat output                 3500   3200  1500   1000    0  watts.
Fuel consumption        0.42    0.37   0.18    0.12    0   l/hr.
Current 12v approx         3        3         1        0.7     0 amps
Current 12v with glow pin on during start   approx 20 amps
Length 422,  Width 142,  Height 142   mm.
Combustion air inlet pipe 25mm, Exhaust outlet pipe 24mm.


Spare parts availability   Excellent
This heater used by military so parts will be manufactured if none available.
Wiring connection details same as D1LCC.
Full servicing information same as D1LCC.
Fault finding information see Faults pages.






D3LP compact
Reduced noise version of D3LCC
Heat output                 3000   2500  1500   900    0  watts.

Better quality photos wanted please.

The D3LC comes in 5 release versions, R0, R1, R2, R3, R4.
The number should be printed on the ECU.
Only R3 and R4 versions have ECU locking.
The diagnostics work with modern diagnosis equipment like 701 or 801 controllers.
There are also some simpler diagnostics built into the D1LC.
If you connect pin 4 and  pin 6 on the controller (yellow and black/white wires) together for between a half and two seconds the controller light should blink the fault codes.
Download this pdf for the details and the output codes.
http://www.avtonomka-bu.at.ua/dokk/Blinkingcode.pdf
See Controllers page  301 modulator for a circuit.
We have not tried it as we have no D3LC model so cannot give more detailed advice.



Photographs showing each stage during servicing would be welcome for including on our site as would reasonable quality pictures of the D3LC.

Start current is double that of a D4 so thicker cables needed.
Not as easy to service as the D4, some parts of the heat exchanger cannot be reached for mechanical cleaning.
Gaskets glowpin and screen are readily available.
Higher heat version of D1LCC so servicing will be the same.
Servicing details are also in the Installation Troubleshooting and Parts manual. If you need a copy we can email a pdf version in exchange for some photographs.
We understand there is a ventilation function but it is not documented in the manuals. Ventilation mode is not compatible with modern controllers.

Photographs showing each stage during servicing would be welcome for including on our site as would reasonable quality pictures of the D3LCC.
Older Eberspacher Diesel Air Heater Models 3 to 4 KW
D3LC,   D3LP





Manufactured from ???? to 1989*.
(We know one dated 87 88 89 was fitted in a new boat in 1989
  Others are dated  1981 1983)

Heat output                    3200, 1800  watts.
Fuel consumption         0.38 l/hr, low value not quoted.
Power consumption        45   watts
Current 12v approx           4   amps
Current 12v start, glow pin on, 21 amps
Manufactured in 12 and 24 volt versions.
Length 425,  Width 148,  Height 160      mm.
Combustion air input pipe 25mm
Exhaust outlet pipe 24mm.



Spare parts availability   Obsolete, parts running out.
Glowpins are sometimes listed on ebay.
Servicing details are on the D3L service page.



Very basic heater, two speed operation, over 25 years old.
Usually fitted with a thermostat controller wired to switch the heater either on/off or between high/low settings.
External ECU having 2 & 6 way connectors and a motor fuse.
[One D3L sold on ebay had a different ECU]
Round rubber bung on top of heater unit covering thermal safety cutout switch.


There is no glowpin screen fitted on this model, a wick does same function.
Fuel is supplied to a rotating open fuel distributor on the blower shaft.
Eberspacher say coming towards end of supported life so spares may not be available for much longer.
Later models are a far more sensible buy.

Quick rough sketch I made to show a user switching details.
Although not pretty it may be useful so I have included it here.