A tube valve frost. The reason is the lack of fluoride, resulting in pressure drop in the tube, the boiling point lower, the valve temperature below freezing.
(2) from the outdoor unit to charge the fluoride mouth pressure measurements less than 0.45MPa. The reason is the lack of refrigerant, resulting in the evaporation pressure drop.
(3) the liquid tube valve frost. 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.
Outdoor unit gas and liquid valve oil. The reason is that the refrigerant and refrigerant oil miscibility, oil attached to the leakage around the overflow of the refrigerant from a leak.
Outdoor unit exhaust thermal. 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 |
