Eberspacher D4W SC 25 2257 05

[tugby]

Came back to boat after a few days away. Eberspacher dead, was set to run 3 x 3 hour burns a day just as it has done for the last 4 months with no problem (going off at 8pm each evening).

 

Symptoms:

1) All coolant gone from header tank, vanished! Was ok just before I went away -

no obvious water accumulation in either cabin bilge or engine room bilge, no evidence of damp or damage anywhere.

 

2) Faults codes read from 7 day timer -

Seems to have had three failed starts, code 052, then locked out on code 050.

 

050 Too many no start attempts Safety time counter reading exceeded.

Reset control unit using 7 day timer or fault code retrieval device to unlock control unit.

052 No start safety time exceeded No flame detected on start attempt.

Check fuel delivery and fuel supply, Check exhaust gas and combustion air ducts.

 

Where has the coolant gone???

 

Bob.

[Pretty Funked Up]

no ideas yet but your stop cock in your header tank needs attention.

 

where has it gone though?

[tugby]

PFU - header tank does not have a ball cock valve, it is a closed circuit system not unlike the engine cooling system.

 

Investigation Update - having thought about it overnight ... If the antifreeze/water mix missing out of the header tank is not in the cabin bilge or engine bilge, then it must have left the boat! A few years ago on an earlier boat with a Webasto heater I had a similar experience when the heater exchanger unit in the boiler became perforated and the heating circuit liquid crossed over into the exhaust and left the boat via the exhaust system. So ... Decided to drop the exhaust hose off the bottom of the Eberspacher as the first action and low and behold, dirty water and unburnt diesel dropped out into the bilge.

 

Eberspacher unit removed and now with Halls Auto Electrics in Yate just north of Bristol. I am hoping it is nothing more than a broken gasket, but they will investigate and advise. Will update with the results.

 

Bob.