Heating & A/C (A7)第 87 / 120 题
Technician A says a low refrigerant charge typically shows low readings on both gauges with poor cooling. Technician B says the leak should be repaired before recharging to the correct weight. Who is correct?
a.Technician A only
b.Technician B only
c.Both A and B
d.Neither A nor B
解析
An undercharge shows low readings on both gauges with weak cooling and rapid cycling, and any leak must be repaired before recharging by weight. Both technicians are correct. Dye or an electronic detector locates the leak source.
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