To remove debris from the air filter, try cleaning the filter. The front panel display will show STOP indicating that the water tank is full and needs to be emptied. Our support resources give you the information you need when you need it. ■ Too many appliances are being used on the same circuit. You're all about looking hot, but prefer not to break a sweat just lying on the couch. Common Symptoms (6) Related Videos (3) Air conditioner not cooling. Increase blower speed or reduce restriction - replace air filter, Restriction in liquid line, metering device or filter drier, High head - High or normal vapor pressures, Recover refrigerant, evacuate & recharee. Remove any obstacles. DO NOT drill a hole in the cabinet base. Air conditioner fan not working. And when you can’t get to the bottom of an issue, contact us or schedule a service call online. See “Electrical Requirements.”, Air conditioner blows fuses or trips circuit breakers. Raise the FAN speed to the highest setting. Still have questions? Before you do anything else, first make sure power to the home or to the circuit breakers for the appliances are disconnected. 10 possible causes and potential solutions . In addition, if the air filter is clogged, the eva...porator coils will frost over. If your appliances have been exposed to water due to flooding, there could be danger of fire or electrical shock. DO NOT drill a hole in the cabinet base. Room air conditioners are not designed to cool multiple rooms. Therefore, air noise will be heard when the fan is operating.The compressor also makes a noise while operating. If the temperature displayed on the wall unit shows a higher temperature than what you are measuring with a thermometer on the table (for example), this is because of where the unit is mounted on the wall. The plug may have come loose. Make sure batteries are inserted in the correct position. Press and release RESET button on the power supply cord. ■ The air conditioner is not properly sized for your room. Shop clearance deals at our official Warehouse Store, Haier - Portable Air Conditioner STOP in Display, Haier - Ductless Air Conditioner Wall Unit Display Turns Off, Haier - Ductless Air Conditioner Temperature On Unit Higher Than Measured Temperature. Need help finding your model number? Below are the most common noises or sounds:Air FlowAn air conditioner must circulate indoor air to heat/cool the occupied space. If there is water dripping inside the room, check the installation of the unit. Air conditioner cycles on and off too much or does not cool room in cooling mode. Get more specific information by entering your model number. Plug into a grounded 3 prong outlet. Some Haier air conditioners have a … This is normal as your air conditioner not only cools but also dehumidifies the air. The air conditioner should slope slightly downward toward the outside. Interconnecting low voltage wiring damage. No output of four-way valve during heating program, Available output of relay JK7 on indoor board, Socket CN6 is not plugged well with connection cable, Available output of relay JK5 on indoor board, Socket CN4 is not plugged well with connection cable, During cooling program, the compressor does not start when the temperature meets proper conditions, The compressor will work normal after three minutes, Too low temperature of indoor coil pipe causes overcooling protection, It will restore automatically when the temperature of indoor coil pipe rises to 7°C, No output at 11 pin of 2803 on indoor board, Connection cable between the compressor and JK6 isn’t plugged well, During heating program, the compressor does not start when the temperature meet proper conditions, 3 minutes’ delay protection for compressor, Too high temperature of indoor coil pipe causes overheat protection, It1 will automatically restore when the temperature of indoor coil pipe falls to 57°C, No output at 11 pin of 2803 of indoor board, During heating program, the compressor does not start when the temperature meet proper, Available output of relay JK6 on indoor board, Connection cable between compressor and JK6 isn’t plugged well, During cooling program, the compressor works while outdoor blowing fan does not, No output at collector of Q2 on indoor board, Available output of relays on indoor board, During heating program, the compressor work while outdoor blowing fan does not, It will automatically restore when the temperature of indoor coil pipe falls to 57°C, With timing indicator and compressor indicator extinguishing, the operation indicator flashes every second, With timing indicator and compressor indicator lighting, the operation indicator flashes every second, Damaged temperature sensor for indoor coil pipe, Water pump indicator flashes every second (trouble for water discharging), No output at 13 pin of 2803 on indoor board, Socket CN5 is not plugged well with connection cable, Faulty connection cable to transmit float feedback signal. The unit has a tank built into the unit which must be emptied periodically. Unavailable voltage at input part of circuit board, Unavailable voltage at one end of the fuse, Return to the controller manufacturer for repair, Unavailable output from the consequent pole of transformer, The transformer isn’t plugged well or is damaged, Plug the transformer well or replace with a good one, Damaged component on power supply unit of indoor board, Display board does not make normal response, Damaged connection cable between display board and indoor board, Connection cable between display board and indoor board isn’t connected well, The buzzer does not beep while making remote control, Unavailable square wave signal at two ends of the buzzer, Available square signal at two ends of the buzzer, CN8 on indoor board is not plugged well with connection cable, Indoor blowing fan cannot not generate low wind, No output at 16 pin of 2803 on indoor board, Unavailable voltage on COM port of relay JK2 on indoor board, Indoor blowing fan cannot generate medium wind, No voltage at COM of relay JK3 on indoor board, Indoor blowing fan cannot generate high wind.