Press the remote control after the "emergency button" to run the air conditioner, the initial judge the fault lies in the remote itself. First, the DC voltage profile measured with a multimeter remote control battery voltage is greater than 2.4V, the power supply voltage is normal explanation. The radio to AM 455-650kHz, the remote control at the radio, press the function key, the radio can not issue short "da da" sound. This time with a multimeter DC voltage profile continues to detect the voltage of the remote control transmitter head, press any key on the remote control, the remote control transmitter measuring signal output voltage does not change 0.2 ~ 0.4V, indicating damage to the remote control.fzQservice manual download site