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Removing and installing (replacing) > < Removing/installing and checking flame monitor G64

A4 Mk2

Checking
Checking
–  Remove auxiliary heater → Chapter.
–  Detach top part of housing with intake air duct → Chapter.
   
–  Use a screwdriver for example to carefully prise the flame monitor -A- out of the mount in the auxiliary heater burner element.
  Note
t  The flame monitor is part of the wiring harness and cannot be replaced separately at present.
  A82-0394
t  The photosensor (phototransistor) -A- in the flame monitor can be tested as described in the electrical checks for components at the connector to the auxiliary heater → Chapter (test step “6”).
t  Clean photosensor -A- of flame monitor or hole -B- (to combustion chamber) if contaminated. If a fault in another component has led to a significant accumulation of combustion residue in the auxiliary heater combustion chamber (e.g. soot, coke deposits or ash on account of a fault in the combustion air supply or the exhaust system), remove and dismantle the auxiliary heater and clean the combustion chamber.
  A82-0396

Removing and installing (replacing) > < Removing/installing and checking flame monitor G64