What's the maintenance method for fac failure
Method of maintenance for fac failure
1. Fault determination. First, the interior control switch is "try-run" and, if the air conditioner works and is stable, the control system is considered to be largely normal and emphasis should be placed on checking the soundness of the sensors。
2. Air conditioners are not operational. Most of these are system failures, and if the air conditioner has malfunctions such as a constant or protective shutdown, the sensor should first be checked. Changes in resistance values can be measured in table rx100. Some sensor resistance values can vary with temperature, but their control characteristics are poor and cause frequency changers to control abnormally and should be repaired or replaced as appropriate。
3. Operating abruptly. Air conditioners are running, sometimes automatically shut down, and only a few minutes after the interior fans have been activated, while the outdoors remain inactive. The failure was due mostly to poor performance and even penetration due to the prolonged warming of the frequency module and should be replaced。
4. Refrigeration (thermal) decreased. First, check if the filter is too dusty and should be cleaned immediately。
5. Air conditioners operate with high noise. (b) retardation of the bolts of the bottom of the compressor or the tight bolts of the fan; in addition, the lack of fan bearings is prone to noise and lubricant oils should be injected regularly; low power voltage also results in an imbalance in the operation of compressors and increases noise, which should check the quality of power systems, especially power outlets and plugs。
6. Maintenance attention。
(1) note whether the municipal voltage is normal. If abnormal voltage is detected at the power plug, the exposure of the main power switch should be checked;
(2) prevention of filtration of electrical discharge. A maximum filter capacity of 4,700 mf in fac should be fully discharged 10 minutes after disconnection to protect the human body from electroshock;
(3) condensers, evaporating dusts, which are more likely to affect the heating effect, should be cleaned by specialized maintenance personnel。
