Preliminary judgment indoor machine tube temperature sensor resistance to change, change after with a normal sensor, cooling mode still can't refrigeration, only set in wet mode with the remote control the refrigeration is normal. Can refrigeration, first confirm the compressor is normal, control circuit cause failure? Accidentally hit the direction key, as a result, air conditioning to turn it off immediately. Now know, air conditioning is out of order is likely to be the cause of the remote control, immediately remove the remote shell, with a little water damage found to have a few buttons, clean up after the commissioning, everything is ok.S4pservice manual download site