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[Big_Al]

hi guys,     got SWMBO a W reg 1.2 ecotech corsa to run around in . Nice little motor , she loves it anyway.

It has AC fitted but it does not seem to work.  started having a look at what it could be & when you pull the dash switch to put the AC on the "Frost" sign lights up but the compessor is not engaging at all . Had a look at the electrical connectors & all seem OK. checked 2 fuses that I think are for AC & both OK.

Any ideas where to start ?  TIA         AL

[Marks DTM Calib]

Need to get the gas pressures checked.

I have seen a couple of issues:

1) Failure of the main hose that runs along the left side of the engine bay

2) Condenser failure

3) O ring failure around the expansion valve on the bulk head.

[Big_Al]

Need to get the gas pressures checked.

I have seen a couple of issues:

1) Failure of the main hose that runs along the left side of the engine bay

2) Condenser failure

3) O ring failure around the expansion valve on the bulk head.

thanks for the reply,

So would it be  that if any one  of these faults are there -  this would prevent the compessor from engaging ?  :-/ :-/ :-/

[Andy B]

Need to get the gas pressures checked.

I have seen a couple of issues:

1) Failure of the main hose that runs along the left side of the engine bay

2) Condenser failure

3) O ring failure around the expansion valve on the bulk head.

thanks for the reply,

So would it be  that if any one  of these faults are there -  this would prevent the compessor from engaging ?  :-/ :-/ :-/

Mark means that any one of those potential faults will result in low gas pressure, which in turns prevents the compressor from engaging.   

[Big_Al]

Need to get the gas pressures checked.

I have seen a couple of issues:

1) Failure of the main hose that runs along the left side of the engine bay

2) Condenser failure

3) O ring failure around the expansion valve on the bulk head.

thanks for the reply,

So would it be  that if any one  of these faults are there -  this would prevent the compessor from engaging ?  :-/ :-/ :-/

Mark means that any one of those potential faults will result in low gas pressure, which in turns prevents the compressor from engaging.   

Thanks Mark, Thanks Andy , will look into getting pressures checked.   

[Matchless]

Also look for any cables or pipes rubbing against the alloy a/c pipes...can wear a hole in them very quickly.

[Big_Al]

Also look for any cables or pipes rubbing against the alloy a/c pipes...can wear a hole in them very quickly.

Will do  -  thanks

[the alarming man]

would the compressor engage if the system was in need of a regas?

[Andy B]

would the compressor engage if the system was in need of a regas?

No. The low pressure switch will stop it from doing so.