Hi guys I thought I’d share this for your thoughts. Apologies if this isn’t new to you but I’ve tried searching Fchat on the topic but found nothing like this. I’m used to the quirks of Ferrari ownership and wrenching through my 328GTB. Or I thought I was! Recently I acquired a 2006 gated 430 and am enjoying it immensely. All was fine until I stalled it whilst slowly manoeuvring. On restarting the car it ran perfectly but the blower fan, which had been on, stopped working completely. Despite trying lots of things at the time I could only get cooler fresh air from outside on the move. It was a hot drive home. I looked in the owners manual, checked fuses and relays (all good), consulted friends and searched Fchat but got nowhere. Eventually my dealer suggested to try an “a/c heater ECU reset”, which I did as instructed. When I was out driving the 430 for the ECUs to relearn their parameters, the fan blower wasn’t working and I was getting concerned about what to do next. However, after stopping and restarting the car everything is back to normal! what is going on here? Do any of you have suggestions to prevent it in the future (apart from not stalling the car again, obviously!). I look forward to hearing your thoughts and advice Many thanks in advance Andrew NZ Image Unavailable, Please Login
Apologies for the graphic! Newbie error as I don’t how that happened[emoji85] Sent from my iPhone using Tapatalk
If you look at the evap unit, item 11. From what i have read on here, these are subject to failure and they control the fan. But just not available- were used on other makes of cars so might find one on e bay. The fact your fan is running again might just be a hic cup.
What did this involve? I doubt there is any preventive maintenance you could try. Worry about it next time it happens. The fan regulator (Item 11 in the Parts Manual (Table 0139)) is also known as a "hedgehog" (P/N 64280200). This item can be repaired. If the item is beyond repair, I've even heard of a used Lamborghini fan regulator being modified by a repair company to suit a Ferrari. https://www.technozen-electronics.co.uk/mg-zs-rover-45-climate-control-repairs/ Unfortunately, sellers of these (second hand) regulators are asking ridiculous prices. https://www.ebay.fr/itm/204093637755? Even this item requires modifications to the plugs
Thx for your posts Mike32 and Qavion. View attachment 3450707 This is the procedure that I did. Hopefully the fan regulator is ok. Do you think it’s worth changing relays? I read a post on Flife from SteVan about ageing relays in these cars and he suggested getting new one for most? In the meantime I think I’ll just enjoy driving it and see if it happens again Again, thanks for posting[emoji106] Sent from my iPhone using Tapatalk
Hi mwstewart Thx for posting. I’ll try it - but where is that? Cheers Andrew Sent from my iPhone using Tapatalk
Sorry, the link/attachment doesn't seem to be working. It's on the left hand side of the evaporator (AC unit) under the dash. This diagram may or may not help. Image Unavailable, Please Login It sounds more like a temporary glitch, maybe due to a voltage dip after the engine died. How old is your battery? There are no relays associated with the blower fan.
Here is the reset procedure With the key out: 1) Pop hood open and Turn battery master power switch to OFF position. 2) Go inside car and turn temperature knob to LO position 3) Turn battery master power switch to ON position. Leave everything alone for about 5 minutes. 4) Start car and allow it to warm up to normal operating temperature, about 10 minutes. 5) Turn temperature control knob to Hi and see if heated air starts to come out. 6) Leave car running for another 5 minutes. 7) Turn temperature to LO and see if cool air starts to come out of vents. 8) That should be it. Hope that helps.
Probably a voltage drop or a pending ac ECU failure Seems to be a thing on the f430 Just reset (as you did) and see if happens again Also check voltage of battery while cranking Sent from my moto g power using Tapatalk
it's probably the resistor aka "hedgehog" playing up, mine also stops intermittently. It's a pain to get to from underneath the dash, but doable. Once you pull it out there are companies who specialise in rebuilding them - here's one in UK: https://www.technozen-electronics.co.uk/mg-zs-rover-45-climate-control-repairs/
arrrrrgh Hi f430 brain trust! Recently the problem with the blower fan not working after starting the car, happened a few more times. After a reset it usually starts to work normally and whilst driving it’s fine. After stopping the car and restarting, the fan just doesn’t work (not every time though and I did think if particularly if hot outside). I can hear the vents are moving. I have started waiting for a few seconds after the “check ok” comes on the the ECUs to talk to each other. This hasn’t helped! I replaced the battery (as the installed one was 2016), because I thought it might be a fluctuating supply. Checked master fuse 3, changed out relay psr1, fuses psf19 and psf13 and all ok. Rest of car works as should. Basic code readers x2 (car scanner and eobd facile) show no codes. Voltage drop on starting is very short and 10+ volts Do you have any further ideas before I go down the ecu or blower fan control unit replacement? Cheers from NZ Andrew
Tricky one. Have you tried resetting the plugs on the ECU? https://www.ferrarichat.com/forum/posts/148907201/ Do you have the same results with the fan in various settings? (AUTO, etc) Seems unlikely to be a fuse as it sometimes resets. There is a fuse dedicated to the blower fan only and that is on the side of the evaporator. Anyway, check for signs of melting. It's the fuse shown in this diagram. Shouldn't be too hard to find on the F430 (left side of driver's footwell on a RHD car) Image Unavailable, Please Login Relay PSR1 is related to the airconditioning compressor only. Can't think of anything obvious at the moment. You wouldn't think that the fan control unit ("hedgehog") would be bothered by hot ambient temperatures at the moment the car is turned on (considering the temperatures in the unit during normal operation), but I wouldn't cross it off your list entirely. I see Eurospares has a new one advertised for NZ$15,195.96 (LOL)... so I guess repair or second hand are the next best options. Maybe something is confusing the computer.
I would think about sending item 11 to the uk for repair, they update some parts to make it more reliable and the cost is next to nothing. If you look on their web site they mention the problems that occur with the fan motor, so that might give you a few pointers
I assume the large green fuse is for the blower motor (30amp?) Image Unavailable, Please Login The smaller brown fuse (7.5amp?) must be for the ECU
Thanks Qavion, mwstewart & Mike32 for putting your minds to this Re fan settings Doesn’t make any difference Re fuses I’ve checked the 30amp green and 7.5 brown fuses on the side of the evaporator, and they are good Re ECUs resetting Didn’t actually pull them off, I gave them a good wiggle though! I’ll try this next. Btw is resetting them, pulling out and then putting them back, or do I have to do something else? If this doesn’t work I’m at the stage of sending the hedgehog for repair, and if that doesn’t work maybe a new ECU or a more homemade solution Image Unavailable, Please Login Thanks again! Andrew Sent from my iPad using Tapatalk
Andrew, pull out completely and reinsert. Do this a few times. It's something to rule out early on as the modules are temperamental when resistance builds on the module pins. It's less likely to be on the fan circuit - usually it's on the control and sensor side of things - but something simple and free to check.
The hedgehog will be controlling the motor speed and other things, if you can find the wires going to the motor you might be able to supply 12 volts directly to prove the motor. It also might have a start capacitor fitted to the motor supply. Remove the hedgehog if you do
The old style cars used to have resistors in the line to the motor, depending on the speed you wanted from the fan, dictated which resistor was used. Given the resistor would get hot, it was fitted into the fan output air flow to keep it cool. Is part of the hedgehog fitted into the fan air flow trunking
Correct. @Baurice Here's the wiring diagram: https://www.dropbox.com/t/atVkijMh597NN2pG Looking at the diagram, it will be quite easy to activate the motor. There is always live battery power on the motor. You just need to provide an earth. This can be done by removing the small (2 pin) plug on the hedgehog and shorting the light blue wire to the black wire on the plug (harness). No need to turn on the ignition. Note that the fan will operate at max speed only. Image Unavailable, Please Login Image Unavailable, Please Login
