Heater / Fan - nothing on position3

Technical questions and answers about the Mazda Bongo

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MattK

Heater / Fan - nothing on position3

Post by MattK » Sun Jan 13, 2008 5:16 pm

Hi,

My heater / fan has stopped working on position 3 only. Still works fine on 1,2 and 4.
Has anyone else had this problem and managed to fix it?

I have searched and have vague ethereal ideas about resoldering something in a relay somewhere.

PS - The drain holes under the bonnet have been kept clean so I don't think the heater motor has got wet.
Lewy

Post by Lewy » Sun Jan 13, 2008 5:23 pm

If you take the resistor pack out and follow the instructions to split it open you'll probably see that one of the tabs has come unsoldered - that will be your fan position 3. Some people think that as well as a bit of a power shunt if the fan sticks, the connections are prone to breaking through engine vibration.

Resolder it and put it back in - should work fine.
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