Why is there water leakage around the indoor unit?
If you notice water leakage around the indoor unit, it’s usually a sign of condensate drainage issues, installation problems, or abnormal operation conditions. Here are the main causes and recommended troubleshooting steps before requesting service:
1. Check the drain pipe condition.
The most common reason for water leakage is a clogged or improperly installed drain pipe. Dust, algae, or dirt can block the condensate line, causing water to overflow from the drain pan. Make sure the drain pipe is not bent, blocked, or elevated, and clean it using a vacuum or compressed air if possible.
2. Inspect the condensate drain pan.
Over time, the drain pan may rust, crack, or shift due to vibration or poor installation. If water accumulates inside the unit, check whether the pan is damaged or misaligned. Replace or reposition it if necessary.
3. Confirm proper unit installation and leveling.
If the indoor unit is not level, condensate cannot flow smoothly toward the drain outlet. Ensure the unit is installed horizontally with a slight tilt (3–5 mm) toward the drain side to allow proper drainage.
4. Examine the air filter and airflow.
Dirty filters restrict airflow and can cause evaporator coil frosting, which later melts and overflows. Clean or replace the air filters every 2–4 weeks, depending on the environment.
5. Check the insulation of refrigerant pipes.
When insulation is damaged, condensation can form on the outer surface of the copper pipes, appearing as a leak. Ensure the thermal insulation sleeve is intact and sealed, especially around joints and bends.
6. Monitor humidity and temperature conditions.
In extremely humid environments, the condensation rate increases. When airflow is too low or temperature settings are too low, excessive condensation may occur. Keep indoor temperature above 20°C (68°F) and humidity below 70% if possible.
7. Check for frozen evaporator coils.
If the coil freezes (caused by low refrigerant, dirty filters, or blocked airflow), melting ice can overflow once the unit stops. Turn off the unit and allow it to thaw naturally, then clean filters and check airflow.
8. Inspect the condensate pump (if equipped).
For ceiling-mounted or basement installations, a condensate pump helps discharge water. If the pump fails or is clogged, leakage can occur. Listen for pump noise — if silent, check power or call for service.
If the above steps do not resolve the problem, turn off the unit and contact Aurashu after-sales service. Provide the unit model, installation date, and leakage location for accurate diagnosis. Our service team can guide you through drain line cleaning, insulation repair, or component replacement remotely or on-site.
