The air conditioning system does not heat maintenance Whirlpool air conditioning maintenance the Baoshan air conditioning and no warm Repair 021-22816736 

 A tracheal valve (thick tube) dry. Touch no apparent sense of cool. The reason is the lack of fluoride, resulting in lower boiling point of the refrigerant in the evaporator, refrigerant Redu increase the valve, the valve temperature. 
 2 tube valve (thin tube) frosting. The reason is the lack of fluoride, resulting in pressure drop in the tube, the boiling point lower, the valve temperature below freezing. 
 Open the panel of the indoor unit, remove the filter, can be found in the evaporator is only a small part of frost. This is the refrigerant and the corresponding decrease of the cooling area. 
 (4) The outdoor unit ventilation without heat. The reason is that the refrigerant, resulting in lower condensing pressure and temperature. 
 Drain hose drain with little or no drainage. The reason is that the evaporator cooling area is reduced, the condensation area is also reduced, condensed water reduce. 
 6 oil gas and liquid valve of the outdoor unit. The reason is that the refrigerant and refrigerant oil miscibility, oil attached to the leakage around the overflow of the refrigerant from a leak. 
 From the outdoor unit to charge the pressure measured by the fluoride mouth less than 0.45MPa. The reason is the lack of refrigerant, resulting in the evaporation pressure drop. 
 In addition, if the valve tube (small tube valve) frost, the serious lack of fluoride; tracheal valve (coarse control valve) frost, indicating a slight lack of fluoride or the environment temperature is too low; two valves knot cream, the secondary throttle system. 
 Moreover, the high-pressure pipe, filled with cream or indoor unit steamed that end up with frosty. 
 There is a problem, certain refrigerants plenty of time to pay attention to the cleanliness of the outdoor unit heat pipes. 
 Clean of dust on the repaired machine be sure to heat pipes. 
 When air conditioning is not cooling can check the following, if the air conditioning tube dirty clogged air conditioning tube and the air conditioning is not cooling can wash. 
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 Challenger Manager 13818806549