TROUBLESHOOTING (CONT) Table 4 — Troubleshooting * Diagnostic lights are a combination of lights that will illuminate in the display area on the unit. They are a combination of the lights you see during normal operation. NOTE: If your problem persists after performing the checks and diagnostics listed in the Troubleshooting tables, turn off the unit immediately and contact an authorized service center. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
14 PROBLEM POSSIBLE CAUSE SOLUTION Poor Cooling Performance Temperature setting may be higher than ambient room temperature Lower the temperature setting The heat exchanger on the indoor or outdoor unit is dirty Clean the affected heat exchanger The air filter is dirty Remove the filter and clean it according to instructions The air inlet or outlet of either unit is blocked Turn the unit off, remove the obstruction and turn it back on Doors and windows are open Ensure all doors and windows are closed while operating the unit Excessive heat is generated by sunlight Close windows and curtains during periods of high heat or direct sunlight Too many heat sources in the room (people, computers, electronics, etc.) Reduce amount of heat sources Low refrigerant due to leak or long-term use Check for leaks, re-seal if necessary and top off refrigerant SILENCE function is activated (optional function) SILENCE function can lower product performance by reducing operating frequency.
Turn off the SILENCE function. The unit is not working Power failure Wait for the power to be restored The power is turned off Turn on the power The fuse is burned out Replace the fuse Remote control batteries are dead Replace batteries The Unit’s 3-minute protection has been activated Wait three minutes after restarting the unit Timer is activated Turn timer off The unit starts and stops frequently There’s too much or too little refrigerant in the system Check for leaks and recharge the system with refrigerant. Incompressible gas or moisture has entered the system.
Evacuate and recharge the system with refrigerant The compressor is broken Replace the compressor The voltage is too high or too low Install a manostat to regulate the voltage Poor heating performance The outdoor temperature is extremely low Use auxiliary heating device Cold air is entering through doors and windows Ensure that all doors and windows are closed during use Low refrigerant due to leak or long-term use Check for leaks, re-seal if necessary and top off refrigerant Indicator lamps continue flashing The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for about 10 minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on. If the problem persists, disconnect the power and contact your nearest customer service center. Error code appears and begins with the letters as the following in the window display of indoor unit: E(x), P(x), F(x) EH(xx), EL(xx), EC(xx) PH(xx), PL(xx), PC(xx)