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| D3 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc |
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#1
23rd August 2019, 05:24 PM
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D3 heater/ac fan problem
So, i guess as a result of lack of use my D3 heater blower has sort of stopped working.
Because the blower motor runs perfectly fine when being powered by the solar sunroof, I don't think its the motor itself. So today I installed a replacement fan controller in the blower motor housing, and the result is still the same. Runs fine when left in the sun and engine off. However today was really sunny and I discovered the fan is actually running with the engine on, but it's stuck in solar mode. Switching the system off and the fan still runs, disabling the solar sunroof running makes no difference and the fan continues to run. So the blower fan is stuck in solar mode by the looks of it, is there a switching relay like on the D2? I did having it running properly for a couple of days a few weeks back and it did work briefly this evening until I turned the climate control off and the blower would not switch back on when I turned it back on. Manual fan speed adjustments make no difference, neither does setting Lo or Hi.
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles Last edited by mannyo; 23rd August 2019 at 05:28 PM. 
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