The condenser fan does not work, mainly because the sliding bearing shaft lacks lubricating oil, the bearing bush burns out the holding shaft, or the fan condenser coil burns out. Xingchang fan professional technician said: it may also be due to the fan working too long, the current is large, the refrigerator relay contact does not work well, and the output circuit on the copper clad plate is burnt out. let's explain in detail below.

I. Oil Shortage of Sliding Bearings

In use, when the condenser fan does not rotate, first check whether the fan motor coil is burnt out with a multimeter. If the motor coil is in good condition, check whether there is oil mark on the bearing at the rear of the fan motor. If there is no oil mark, it indicates that the sliding bearing is short of oil.

II. Insufficient Refrigerant

In use, if it is found that the refrigerating capacity of the freezer system is insufficient and the refrigerant in the refrigeration system is suspected to be insufficient, the manifold pressure gauge can be used to check the system pressure.

If the high and low pressure sides of the condenser fan are both low (high pressure is lower than 83kpa and low pressure is lower than 78kPa) and there are bubbles in the liquid glass window, the air at the outlet is not cold, which indicates that the system refrigerant is insufficient.

Treatment method: Find out the cause of the leakage, repair the leakage site, and supplement refrigerant to the system. Let the engine run at ZO0r/mni until the bubble disappears. The pressure gauge reads 118-Z16kpa on the low pressure side and 1274-1596kpa on the high pressure side.

III. Poor cooling of condenser

The poor cooling of the condenser in the refrigeration system is mostly caused by dust and sundries blocking the engine radiator and condenser radiator. During inspection, the manifold pressure gauge can be used to check the system pressure. If the reading of the high-pressure meter is high and dust and sundries are accumulated on the engine radiator and condenser radiator, it indicates poor cooling of the condenser.

Treatment method: Remove dust and sundries accumulated at the engine cooling fin and condenser cooling fin.

Contact us to learn more: XingChang Fan.