This technical service bulletin is a single document, which explains step by step guide to troubleshoot your air conditioning on Audi vehicle (not cool), teaches you step by step explanation, complete with artwork. Airconditioning not cool. Only in 2006 and 2007 A3 models equipped with air conditioning compressors with part Zexel number 1 K 0 820 803N affected. This compressor type can be identified by the disc shown in Figure 1. Technical background: there may be one of two possible problems with Zexel air conditioning compressors. Obstruction: a/c compressor control valve N280 in air-conditioning compressor is blocked by metal wreckage and compressor generates no pressure to move with its propulsion engine running and air conditioning switched on rotate not center bolt (Figure 1, paragraph 2) with disc. As a consequence, the compressor is not driven, and pressure is not generated when air conditioning is switched on. Diagnose compressor regulator valve N280 according to ElsaWeb >> heating and air conditioning >> heating and air conditioning >> 87 Air conditioner manufacturing are >> a/c refrigerant system components, servicing >> a/c compressor Regulator Valve N280 activation and function of the control. If the N280 is defective, the compressor must be replaced as a/c compressor control valve N280 cannot be changed separately.
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