Eberspacher D5L Heater Help please

[Dockhead]

Originally Posted by john61ct

How do you find this friendly neighborhood Espar service guy?

Google-** usually works, in the absence of knowing local sailors to consult.

[raingolfer]

I have an Espar D5LC. We were having problems with it shutting off. Found some info from a former tech that you can jump/reset the control unit.
"If the heater locks out due to too many overheated. It will just go dead and not try starting at all, you can unlock it by jumping terminals 4 and 6 under the lefthand cover of the thermostat and then turn on the on switch with the jumper in place. Hold it on for two seconds, and that will unlock the lockout. Alternatively. Pins 9 and 11 on the black plug going into the bottom of the control box (ecu). Same sequence keep jumper in place and turn on thermostat. Remove the jumper when the heater starts. The ECU is the square aluminum box near the heater(brain) Or called the control unit."

I did that and got it running. When it quit again, we pulled out the control unit and opened it up. There was corrosion on the circuit board. A local service guy had a used one that he gave me, and once I reset it, the heater has worked great.

[Adrian Chen]

These guys are a great resource:

https://www.letonkinoisvarnish.co.uk...r_Intro_1.html

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