Checking condensation drain, removing and installing valve — AUDI

Condensation drain valve -A- must not be gummed up and must close; the drainage aperture must be positioned at bottom.

Notes:

Remove condensation drain downwards out of floor panel -B-.
When fitted, condensation drain valve must not make contact with heat shield.
The condensation drain valve must not be gummed up with wax or underseal.
When installing, ensure correct position in floor panel -B-.

Drain funnel -A- is screwed to the floor panel with bolts -B-; it must not impair the function of the drain valve.
In the event of complaints about moisture in passenger compartment, check and, if necessary, clean condensation drain valve. Also check the function of the two vent frames for forced air extraction in the boot =>Page
87-104
.

Foam seal -A- must make snug contact with drain funnel.
The drain funnel and the foam seal can only be replaced with the air-conditioner removed (removing and installing air-conditioner =>Page
87-267
).
The condensation drain is provided with a spout -B- to prevent the condensation at the drain running back into the foam seal.

If spout has broken off, fit grommet -A- (part no. 8D0 860 155) as shown and seal off from drain pipe using silicone adhesive sealant.

In the event of moisture in passenger compartment:

Check passenger compartment forced air extraction (via luggage compartment) => Page
87-104
.
In vehicles as of model year 2002, check the signal for detecting windscreen wiper operation at the -E87 =>Reading measured value block, display group "017" Page
01-273
Check the dust and pollen filter for dirt and the corresponding cover for correct installation => Page
87-105
Check the various positioning motors and the appropriate levers, pay particular attention to the position of positioning motors -V71 and -V113 and the associated flaps.
In vehicles as of model year 2002 and a compressor with a regulating valve for compressor -N280, check the measured value of the evaporator vent temperature sender -G263 => Page
87-173
.

In vehicles without evaporator vent temperature sender -G263 check the vent temperature of the air from the evaporator e.g. using the footwell vent temperature sender -G192 with the setting:
"Temperature Lo" for driver and passenger side, 4 or 5 bars for the fresh air blower speed, air outlet in the footwell and fresh air mode under the operating conditions described by the customer. If the measured value of the sender is too low (at an ambient temperature of 0 °C,colder than 0 °C for a longer period of time) observe the instructions on checking the refrigeration capacity => Page
87-173