Hi, I have an Eberspacher D4 Plus. It runs for a short while (up to 20 mins) then stops with error 31 (interruption to the blower). The fan rotates fine and the wiring all appears okay. I've ordered a service kit from you, but is it likely the blower motor is at fault? I have a spare controller so have already replaced that, so that's not to blame. I intend to service the device anyway as I last did so 4 years ago. Thank you in advance. Steve

Question

Hi, I have an Eberspacher D4 Plus. It runs for a short while (up to 20 mins) then stops with error 31 (interruption to the blower). The fan rotates fine and the wiring all appears okay. I've ordered a service kit from you, but is it likely the blower motor is at fault? I have a spare controller so have already replaced that, so that's not to blame. I intend to service the device anyway as I last did so 4 years ago. Thank you in advance. Steve

This question is related to Eberspacher Airtronic D4 12v Blower Motor | 252113992000.

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Answers (1)

Answered by Butler Technik's David Butler
Posted 4th September, 2025 at 07:52 by David Butler

Hi Steve, with error code 31 coming up repeatedly I expect the blower motor will be faulty. This code and rectification work is very famiyto us in our workshop tbh. 
thanks

David

 

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