Gree smallpox machine air conditioner prompts E9 fault. What maintenance methods are there?

1. First, check the drainage mode of the drainage pipe installed on site to prevent E9 failure caused by excessive backflow. The specification requirements are as follows:

1) The drain pipe of the patio machine is within 1500mm from the unit, and there must be a vertical downward drainage height section above 100mm to prevent the pump from stopping and the water in the drain pipe from flowing back to the water tray, resulting in E9 failure or water leakage. And check whether the unit is hoisted horizontally. If the device is not installed horizontally, it must be corrected immediately.

2) If multiple drainage pipes meet, they need to be installed in strict accordance with either of the following two installation methods (as shown in figure 1) to ensure that the main pipe where the drainage pipes meet has a certain downward slope, and the downward slope is at least1100. Do not meet the relevant requirements, must be on-site rectification. Restart the machine after rectification and test whether the drainage is smooth. Click to enter official website for details.

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