Diavia air conditioning and fan

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ccaallvviinn
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Post Sun May 08, 2016 8:14 am

Sorry, yet another question, apologies

The heater fan only operates on speed setting 4 with the air con button pressed in

Has anyone else had this issue, is it the same fix as without the air con fitted?

Out if interest, is this a reliable system and worth recommissioning? I'm not a fan of ac on a car where the top comes off, but I do like what is there to work

Thanks in advance[/list]
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Brianmoooore
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Post Sun May 08, 2016 2:44 pm

It doesn't have the reputation of being the best of systems, but if it's there, it's better than nothing.
Does the fan speed switch work normally without the aircon on?
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ccaallvviinn
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Post Sun May 08, 2016 4:42 pm

No, the fan is dead on all speeds without the ac on, and only blows with the ac button on and speed 4 selected
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Brianmoooore
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Post Sun May 08, 2016 5:45 pm

Do the door mirrors work?
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ccaallvviinn
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Post Sun May 08, 2016 9:36 pm

Yes, door mirrors both fine
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ccaallvviinn
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Post Sun May 08, 2016 9:36 pm

Yes, door mirrors both fine
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Brianmoooore
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Post Sun May 08, 2016 10:48 pm

The problem I have is that I don't know how the Diavia system is connected into the existing electrics.
The door mirrors share the same power source as the fan, so if they are working, so is the unloader relay. Next thing to check is the relevant fuse, #20, and if that's OK it's time to look at the wires connected to the fan switch, which can be reached by removing, first, the rear centre console, and then the front one.
Pull off the plug, and connect a 12 volt bulb between the green/black wire and a good body earth, with the aircon off, and see if the bulb lights with the ignition on.
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ccaallvviinn
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Post Mon May 09, 2016 6:34 am

Thank you very much, I'll give it a go, brilliant forum