Monthly Maintenance
Table 6-2 lists the monthly maintenance items for an indoor unit. Record the maintenance result in the table after checking each maintenance item.
Task |
Baseline Requirement |
Troubleshooting |
|---|---|---|
Air filter |
The air filter is clean and not blocked. |
Replace the air filter. It is recommended that an air filter should be replaced every 6 months. |
The air filter is not damaged or distorted. |
Replace the air filter. It is recommended that an air filter should be replaced every 6 months. |
|
Condensate pan and liquid level detector |
The condensate pan and liquid level detector have no scale. |
Clean up the scale from the condensate pan and liquid level detector. |
Compressor |
The compressor is secured. |
Tighten screws if the compressor is not secured. |
The compressor service valve has no oil stains. |
Clean the oil stains. |
|
The operating compressor generates no metal friction noise or collision noise from inside. |
Replace the compressor. |
|
Wet film humidifier |
The wet film is no scale. |
Replace the wet film humidifier. |
No operating overtime alarm is generated on the wet film humidifier. |
Replace the wet film humidifier. |
|
Pipe |
The refrigerant pipe does not leak or corrode, and the wrapped thermal insulation foam is intact. |
Repair the leakage points and rewrap thermal insulation foam. |
The liquid sight glass is almost green, or not totally turns yellow. |
If the sight glass completely turns yellow, water is too much in the pipe. To solve the problem, empty refrigerant out of the pipe, vacuumize the pipe, drain out water, and then charge new refrigerant.
NOTE:
If the sight glass does not obviously turn green, use a blow drier to blow wind to the filter until the sight glass is green. |
|
Wear protective gloves and touch the compressor angle valve, needle valve, and soldering points in the refrigerant pipe to check whether there are oil stains. |
If there is an oil stain, check whether the suction and exhaust pressure of the compressor is within the normal ranges. (For the proper ranges of suction and exhaust pressure of the compressor, If the pressure is beyond the normal range, contact Huawei technical support. |
|
No water exists under the water pipe or on the thermal insulation foam. |
|
|
The refrigerant pipe support is secure and intact. |
Replace the refrigerant pipe support and secure it again. |
|
Indoor fan |
The indoor fan guard is not deformed, and the fan blades are not damaged. |
Replace the fan. |
The indoor fan runs smoothly. |
Take out the foreign matter. |
|
The screws on the indoor fan are not loose or distorted. |
Tighten the screws using a 10# socket wrench. |
Water pan filter
Open the water pan cover at the front door, and you can see the water pan filter. Figure 6-1 shows how to remove a water pan filter.
