Please Don't Post on this thread !

The most common causes for blowing the air conditioning fuse is a blower motor overload or a short in the airconditioning control panel. It is best to eliminate the blower as the fault symply by unplugging it. If the fuse still blows it is best to disconnect the control panel next, this is the easiest way to determin whether the fault is in the A/C circuit board or not.
At this stage most people would now bite the bullet and order a new part. There is some good news. Most circuit boards can be saved with very little effort.

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Gary

Cherry Red GTi 6

Repair Steps
1. Isolate the short circuit by disconnecting the A/C panel.
2. If this confirms the fault then procede with removing the control panel and dismantle.
3. Remove the large diode adjacent to the blue connector. See figure A and B.
4. Plug the A/C harness back into the crcuit board.
5. Does the fuse still blow? If not, then we are almost there.
6. Check all funktions and if all is ok, reassemble the panel.

Fig A

gazzerdaman has attached the following image:

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Gary

Cherry Red GTi 6

Important! It is not unusual for the earth and main power supply pins on the board or in the connector to be burnt due to the high current flow. This can be easely rectified by soldering an earth and positiv power supply wire directly in the place where the diode used to be. In figure B the locations are marked: + and — respectivly.

gazzerdaman has attached the following image:

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Gary

Cherry Red GTi 6

I expect it is probably possible to also replace the component but I haven't personally carried out this repair.

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Gary

Cherry Red GTi 6

It looks like the device is a surge suppressor which goes short circuit to protect the PCB.

If it is removed and it gets another surge the whole PCB may be destroyed.

Can you post the component number written on it and I will find out what it is exactly. I will then be able to get one for you.

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S Reg Diablo standardsSpec SORNED
R Reg Nile standard spec written off then repaired
X Reg Astor in need of TLC
R Reg Nile to restore
Set of Lions to fit.

FAQ'ed

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GTI-6 & Rallye

Rallye gets sideways in the wet at Snetterton