SiUS041501E Trial OperationTrial Operation and Field Settings 1042. Trial OperationOutline Carry out the trial operation in accordance with the operation manual to ensure that all functionsand parts, such as flap movement, are working properly.Trial operation should be carried out in either cooling or heating operation.Detail 1. Measure the power supply voltage and make sure that it falls within the specified range.2. In cooling operation, select the lowest programmable temperature (18°C, 64°F); in heatingoperation, select the highest programmable temperature (30°C, 86°F). Trial operation may be disabled in either operation mode depending on the roomtemperature. After trial operation is complete, set the temperature to a normal level (26 ~ 28°C, 78 ~ 82°Fin cooling, 20 ~ 24°C, 68 ~ 75°F in heating operation). For protection, the system does not start for 3 minutes after it is turned off.ARC480 Series(1) Press the center of the TEMP button and the OFF button on the remote controller at the sametime.(2) Select T (trial operation) with the TEMP or TEMP button.(3) Press the FAN button to enter the trial operation mode.(4) Press the COOL or HEAT button to start trial operation.(5) Trial operation terminates in approximately 30 minutes and switches into the normal mode. Toquit trial operation, press the OFF button.HEAT PUMP model COOLING ONLY model(R21821)