Common alarm causes and treatment
1, compressor high pressure alarm
① High voltage switch failure or control interference leads to false alarm;
(2) There is more dust in air-cooled condenser, and the cooling capacity decreases;
③ The power supply of the air-cooled condenser fan is disconnected;
④ The governor of air-cooled condenser is open;
⑤ Abnormal temperature switch of air-cooled condenser;
⑥ Water cooling equipment condenser water flow loss or abnormal cooling water temperature;
⑦ Abnormal oil blockage or foreign body blockage in the exhaust pipe;
⑧ Refrigerant is overcharged.
2. The compressor low pressure alarm is generated
① Low voltage switch failure or control interference resulting in false alarms;
② Insufficient air volume due to the blockage of indoor filter;
③ The indoor main fan is faulty. Air volume decreased;
④ The temperature set point is wrong, and the return air temperature is too low;
⑤ The cold start delay setting is not enough, and it is difficult to start in winter;
⑥ Refrigerant is insufficient or refrigerant leaks.
3. The low humidity alarm is generated
① The low humidity alarm set point is incorrect.
② The machine room is poorly sealed and the door is opened frequently;
The humidifier water supply is blocked, the water pressure is too low, and the water is stopped.
(4) There is more scale in the humidifying tank;
⑤ The humidifying electrode has more scale.
4. The high temperature alarm is generated
① The high temperature alarm set point is incorrect.
② The base heat load is large or the door is opened frequently;
③ Other abnormal alarms cause the compressor to stop.
④ The chilled water flow of the chilled water device is lost or the chilled water temperature is abnormal.
5. The floor leakage alarm is generated
① The water leakage detection probe contacts the conductor;
② The drainage pipe is blocked, and water overflows from the humidifier water pan;
③ The drainage pipe is broken or leaked;
(4) Condensate dripping in abnormal parts of the equipment;
Other unusual ways of water flowing into the ground.
6. Air flow is lost
① Insufficient airflow detection thermistor and heating resistance is too close;
② The sampling pipe of the air pressure difference sensor is blocked or the position is offset;
③ The sensor board and the display control board are loosely connected;
④ power supply reverse phase;
⑤ indoor partial fault;
⑥ The filter is blocked.
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