Fan Position 1

[Jonathanm]

Hello,
I don't get any air from position 1 on the fan control. Everything lights up ok - only get fan running on speed 2 or 3. Assume this is not normal - any ideas about where this is all controlled from?

Thanks as usual to the brain trust!

 

[supersnoop]

That seems normal to me, unless I misunderstood your numbering. The lowest fan setting is off.

 

[Jonathanm]

That seems normal to me, unless I misunderstood your numbering. The lowest fan setting is off.

Thanks, yes zero is of course off - but on my car there is no fan running on position 1. Only position 2 & 3. Just does not seem normal to me?

 

[Drewflux]

@Jonathanm I wonder if the blower fan has a conventional fan speed resistor? Normally most are internally wired in series, but I have seen some that are eired in series/parallel. You will have to wait for someone who has a schematic to confirm.

 

[XR116]

Seems not to be normal to me, mine is blowing at 1, and 2 and 3 is just more airflow, but it starts at "1" - 0 is off.
Any difference if you set to windshield or passnger (right knob @full right or full left) ?

 

[Jonathanm]

Seems not to be normal to me, mine is blowing at 1, and 2 and 3 is just more airflow, but it starts at "1" - 0 is off.
Any difference if you set to windshield or passnger (right knob @full right or full left) ?

No, no fan on position 1 no matter where the direction is - ok seems this is not normal. OK now to get to the bottom of this...any gems? I must admit its been like this since I had the car...

Thanks,

 

[supersnoop]

Sorry for the confusion. Mine doesn’t have any numbers, so I wasn’t considering position 0.

 

[NigelM]

Roadster 2.5 has 0-1-2-3 just beneath the Alpine unit; but, yes @Jonathanm you have something that isn't normal. I get air flowing while the car is moving even on zero which is only stopped by physically closing the vents or switching to internal circulation only, however 1-2-3 are fan settings with corresponding increasing speed.

 

[ML Auto]

The fan speed is controlled by the HVAC module. It does not use a blower motor resistor like the lotus. It could be the switch, as it has three separate 12V feeds into the HVAC module, one for each speed.

 

[Jonathanm]

The fan speed is controlled by the HVAC module. It does not use a blower motor resistor like the lotus. It could be the switch, as it has three separate 12V feeds into the HVAC module, one for each speed.

Thanks for this...switch first place to check....if I remember correctly whole dash and stereo needs to be removed first before I can get to the fan controls?

 

[strider]

I would check the switch first - could be a dirty contact or a loose wire. Haven't had the dash apart so can't help you there.

 

[Kerios]

Try some contact cleaner on the switch - you may need to remove the switch panel - but often the contacts between the pads on the switch accumlate grime which prevents a good electrical contact. If you do that switch, worth doing the others at the same time.

 

[Jonathanm]

Thanks Kerios - I'll try that but I think I need to remove the centre consul to get the panel off...I'll try from the outside first...

 

[jnordeng]

My fan isn't working in any positions now, did you ever find the problem?

 

[Jonathanm]

No I have not looked at it yet....its on my list....I think I have to take the dash off...not 100% sure...not the end of the world but a bit of a PITA..