A/C - Dripping water

Good morning,
Was driving my Pantera (VIN 1571) yesterday with A/C switched on. After 10 minutes my wife started complaining about cold water dripping on her feet. Water comes from the A/C heat exchanger. I checked the water drainage which is free. I could not find the origin of the leak, but accessibility is quite limited as you know. Did you had similar issues and how did you fix it?
Brgds
Hartwig
Original Post
quote:
Originally posted by SIG:
Good morning,
Was driving my Pantera (VIN 1571) yesterday with A/C switched on. After 10 minutes my wife started complaining about cold water dripping on her feet. Water comes from the A/C heat exchanger. I checked the water drainage which is free. I could not find the origin of the leak, but accessibility is quite limited as you know. Did you had similar issues and how did you fix it?
Brgds
Hartwig


There is a wrap for the air conditioning lines that is used. It basically insulates the lines and keeps the condensation off. It is somewhat difficult to get to the lines and this wrap is very sticky.
Thanks for your thoughts. I have all my lines well insulated and I checked yesterday that they are not the origin of the water condensation. It looks as if the water is coming from the A/C block. There is a sticky wrap put around part of the A/C block. Has that wrap a sealing function? The wrap is still very sticky after so many years but I have not understood its purpose. Is it maybe closing some holes in the A/C block. On the accessible front side I removed some of the wrap but could not find any holes in the block to seal. When driving through corners there is even a splash of water. Thanks for any additional advice you might have.
Brgds
Hartwig
Hi the sticky cork tape is used to seal around awkward shaped pipes, fittings and any openings where cold air can escape or warm humid air can condense onto. Basically it is a very pliable Insulation material widely use in the commercial refrigeration world.
The only thing I can think is that the evaporator is freezing up and stopping the condensate water getting to the drain outlet, if this is the case then incorrect gas charge or expansion valve would cause icing, the air con evaporator operating correctly shouldn’t really ice up.
Hi,
yesterday I removed parts of the sticky wrap that is around the block (as far as I could). I found underneath that wrap overlapping metal sheet which could well be the origin of the dripping water. I put new sealant along that line which was not easy since there is the ventilator blocking partially access. I will test drive today and report back.
Brgds
Hartwig
Short feedback: Below the sticky wrap of the A/C & heater block there is partially overlapping metal sheet. Seems that the purpose of the wrap is also to stop condensed water leaving the block. My wrap was still very sticky but obviously with time it lost part of its sealing ability. The new applied sealant stopped all leakage. There was not a single drop of water even after two hours driving in hot and humid weather conditions and A/C at maximum power.
Brgds
Hartwig

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