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Several Forms Of Heat Pump Frost Jul 12, 2017

  Several forms of heat pump frost

  1, the normal frosting state: winter outdoor temperature below 0 ℃, the heating time running for a long time, the outdoor unit heat exchanger surface even frost is a normal phenomenon. Reason: When the temperature of the heat exchanger is lower than the dew point temperature of the ambient air, the surface of the heat sink will produce condensed water. heat pump When the ambient air temperature is below 0 ℃, the condensate will condense into the frost. Frosting will affect the heating effect. General heat pump products have automatic defrost function to ensure the normal operation of air conditioners.

  2, abnormal frost:

  A, the outdoor environment temperature is greater than 0 ℃, boot the entire heat exchanger on the surface of the heat sink surface condensation of water will be condensed into a thin cream, and soon frost knot thicker. Indoor mechanism of hot effect is poor, and showing the phenomenon of defrosting ordinary. heat pump The failure is generally the heat exchanger on the surface of the heat exchanger on the surface of the dirty block, outdoor fan system failure or outdoor heat exchanger into the outlet caused by obstacles.

  Solution: outdoor heat exchanger cleaning, check the fan system or exclude into the outlet of the barrier.

  B, outdoor environment temperature is greater than 0 ℃, boot soon. The bottom of the outdoor side of the heat exchanger (the beginning of the capillary outlet at the outlet of the heat exchanger) is very thick, most of the heat exchanger is not condensed, and frost is frosted over time. The indoor fan is always at Anti-cold wind low-speed operation; air conditioner frequent defrost. The fault is generally the system lack of refrigerant.

  Solution: first check the system leak point repair, plus refrigerant.

  C, outdoor environment temperature is greater than 0 ℃, boot soon. The upper half of the outdoor side heat exchanger (the outlet of the heat exchanger and the return air pipe) is very strong and has a high degree of frost on the heat exchanger over time (with heat exchanger outlet to heat exchanger inlet) Frost in the extension; and the heating effect is poor; heat pump air conditioner ordinary defrost. The fault is generally too much system refrigerant. Faults often occur after maintenance plus refrigerant.

  Solution: put the refrigerant to normal operation.