Written There may be Two reasons for the water leakage and ice buildup.Blocked water drain pipe.Refrigerant LeakageDirty FiltersBlocked water drain pipe.Actually there is no water in the split Ac system. The water is produced in the internal unit because the cooling of air causes the water present in the air to condense into small water droplets (similar to water condensing on a cold bottle)This water is then drained out through the drain pipe, which in a split ac is dusted out along with the power wires and the copper tubing.Thus if the drainage system is faulty or blocked, water collects in the inner unit and starts flowing and leaking out from the inner unit.Drainage problem: When hot, humid air hits the evaporator coil, it removes heat and moisture from the air before circulating it back into your home. Especially in humid climates, the A/C condenses a lot of vapor into condensation that should drain outside. However, if water builds up in the condensate drain and starts to get backed up, the coil freezes the condensation and the ice further blocks the drain, exacerbating the situation further.

Source: What Causes an Air Conditioner to Ice UpRefrigerant LeakageThe Gas is leaking in your AC. So the lower pressure of refrigerant is causing evaporator coils in inner unit to Ice up, When some of the ice falls on the fan it is thrown out from the indoor unit.When AC has Low refrigerantWhen the refrigerant in the system is low, the pressure; wall mounted split ac unitsThis condensation will drip harmlessly off the coils, and into the condensate drain.heat pump unit not levelWhen the refrigerant is low, the temperature of the refrigerant at the beginning of the evaporator coils will be colder than the freezing point of water (less than 32°F). how to size air conditioning unit calculatorThis cause the temperature of the suction line to drop, and just like in the evaporator, cause the condensation to freeze.

Eventually the freezing works its way all the way back to the compressor, which is where the trouble can really start. If this happens, the compressor can be damaged.It should also be noted. So this problem only occurs in a "sweet spot", where the refrigerant is low, but not too low.Source: Why do the evaporator and suction lines freeze when there is low refrigerant?Dirty filtersDirty filters hinder airflow and can cause icing up of the Evaporator coils. Please clean filters in your AC and see if it solves the problemThe warm air from your home needs to flow through the system fast enough that it keeps the coil above freezing. If there isn’t enough airflow, the coil becomes too cold and freezes condensed water before it drains away. One major cause of inadequate airflow is a dirty filter. Change the filter to improve airflow.Source: What Causes an Air Conditioner to Ice UpPlease get the AC serviced by a professional ASAP.Please ask the AC repair professional to trace the source of Leakage (if any) before filling or topping up the refrigerant.

Please stop running the AC till servicing is doneStay Cool… Written Written Ductless air conditioning depends on refrigerant to do its job, just like centralized systems do. It needs to be present in a specific amount in each unit, and it can’t leak or otherwise lose refrigerant. If it does, the delicate process is thrown off. Ice will form on the evaporator coils, which comes between the refrigerant at the air it’s trying to cool. Ice can also form if the coils get dirty and in a few other set circumstances too.You may be tempted to scrape the ice off the coils, but you should never do so. It won’t fix the problem and you may damage the coils in the process: turning a comparatively easy repair into a very expensive one. A trained technician can pinpoint and seal the source of the leak, then recharge the refrigerant levels to their prescribed amount.furnace repair vaughanWritten There are many ways to solve your issue. Depending on your AC, troubleshooting could be in air filter.

I recommend you this link about Split Ductless Air Conditioners and how it is functioning. Moreover you could find all necessary info about this topicThis Old House plumbing and heating expert Richard Trethewey shows how to prevent ice buildup from shutting down an air-conditioning system In this video, This Old House plumbing and heating expert Richard Trethewey shows how to prevent ice buildup from shutting down an air-conditioning system. 1. Clean or replace the return-air filter to ensure it's not obstructing the flow of fresh air to the air conditioner. 2. Confirm that the size of the air-conditioning unit can accommodate the diameter and number of cool-air ducts. 3. Remove the metal access panel to expose the evaporator coil. 4. Check the size of the outdoor condenser unit. Typically one ton of cooling is needed for every 500 to 600 square feet of living space. 5. If the condenser is too big for the house, it can cause ice to form on the evaporator coils and shut down the system.

6. Pump out and collect the refrigerant from the existing too-large condenser. 7. Disconnect the old condenser and cart it away. 8. Install a new appropriate-size condenser. 9. Connect the new condenser to the existing electrical power supply and refrigerant lines. 10. Remove the old evaporator coil and replace it with a new coil that matches the tonnage rating of the new condenser. 11. Reconnect the ductwork and seal the new evaporator cabinet at top and bottom with sheet metal strips and foil tape. 12. Braze new copper connections to the refrigerant lines. 13. Insulate the suction line. 14. Connect PVC pipe to the condensate drain and then attach the pipe to a pump. 15. Run flexible tubing from the pump to a drain. 16. If necessary, add refrigerant to the new system. 17. Turn on the air conditioner to ensure it's operating properly.Ice storage is a clean, reliable and least-cost distributed energy storage solution for the grid.

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