Check SiBE12-908173 Service Diagnosis3.8 “Inverter Checker” CheckCheck No.14 1. CharacteristicsIf abnormal stop occurs due to compressor startup failure or overcurrent output when usinginverter unit, it is difficult to judge whether it is caused by the compressor failure or other failure(control PCB, power transistor, etc.). The inverter analyzer makes it possible to judge the causeof trouble easily and securely. (Connect this analyzer as a quasi-compressor instead ofcompressor and check the output of inverter)2. Operation Method1) Be sure to turn the power off.2) Install the inverter analyzer instead of a compressor.Note: Make sure the charged voltage of the built-in smoothing electrolytic capacitor drops to 10VDC or below before carrying out the service work.ReferenceIf the connector terminal of compressor is not a FASTON terminal (difficult to remove the wireon the terminal), it is possible to connect a wire available on site to the unit from output side ofPCB. (Do not connect it to the compressor at the same time, otherwise it may result in incorrectdetection.) How to activate inverter test mode1) Turn the power on.2) Press the 3 buttons (TEMP▲, TEMP▼, MODE) on the remote controller simultaneously.3) Press TEMP▲ or ▼ button and select T.4) Press the MODE button to enter the trial operation mode.5) Press the MODE button and select FAN mode.6) Press the ON/OFF button to start inverter test.(R5160)(1) Remove the FASTONterminals from the terminalblock of the compressor.(2) Connect the FASTONterminals to the terminals ofthe inverter analyzer.CompressorInverter analyzerBe careful not to touch the terminals(U,V,W) each other. Otherwise, highvoltage is applied.
