Common causes and solutions for IT room cooling alarms

1. Compressor high-pressure alarm

① False alarm caused by high-voltage switch failure or control interference;

② The air-cooled condenser has a lot of dust and the cooling capacity is reduced;

③ The air-cooled condenser fan power supply is disconnected;

④ The speed regulator of the air-cooled condenser is broken;

⑤ The temperature switch of the air-cooled condenser is abnormal;

⑥The water flow rate of the condenser of the water-cooling equipment is lost or the cooling water temperature is abnormal;

⑦ Abnormal oil blockage or foreign matter blockage in the exhaust pipeline;

⑧Excessive refrigerant charging.

① Low-voltage switch failure or control interference causes false alarms;

② The indoor filter is clogged, causing insufficient air volume;

③ The indoor main fan is faulty, and air volume decreases;

④ The temperature set point is wrong and the return air temperature is too low;

⑤ The cold start delay setting is not enough, making it difficult to start in winter;

⑥Insufficient refrigerant charge or refrigerant leakage.

① The low humidity alarm set point is wrong;

② The machine room is poorly sealed and the door is opened frequently;

③The humidifier water supply is blocked, the water pressure is too low, or the water is cut off;

④ The humidification tank is heavily scaled;

⑤ The humidification electrode is heavily scaled.

① The high-temperature alarm set point is wrong;

② The heat load is large or the door is opened frequently;

③ Other abnormal alarms cause the compressor to shut down;

④ The chilled water flow rate of the chilled water equipment is lost or the chilled water temperature is abnormal.

① The water leakage detection probe contacts the conductor;

② The drain pipe is blocked and water overflows from the humidification water pan;

③ The drainage pipe is broken or leaking;

④Condensation water dripping from abnormal parts of the equipment;

⑤Water from other abnormal channels flows into the ground.

①Insufficient air flow detection thermistor and heating resistor are too close together;

② The sampling air pipe of the airflow pressure difference sensor is blocked or the position is offset;

③ The connection between the sensor board and the display control board is loose;

④ The power supply is in reverse phase;

⑤ The indoor delivery part fails;

⑥ The filter is clogged.

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