22-10NOTE2-12. Test RunUsing the control unit(1) Change the indoor control unit switch from “ON” “TEST”.(The outdoor unit will not operate for 3 minutes after thepower is turned ON and after operation is stopped.)(2) All the indicator lamps blink while the test run is in progress.(3) Temperature control is not possible during the test run.(4) If correct operation is not possible, the trouble will beindicated by the indicator lamps. Refer to “Table of SelfDiagnostic Functions and Corrections” and correct theproblem.(5) After the test is completed, change the control unit switchfrom “TEST” “ON”. Confirm that the indicator lampshave stopped blinking. (A function is included whichcancels the test run after a 60-minute timer has elapsed,in order to prevent continuous test run operation.)ONOFFTESTThis mode places a large load on the devices. Use it only for performing test runs.A test run is not possible if the power is turned ON with the switch in the TEST position.After the power has been turned ON, change the switch once to ON or OFF, then switch it back tothe TEST position.2-13. PrecautionsRequest that the customer be present when the test run is performed. At this time, explain the operationmanual and have the customer perform the actual steps.Be sure to pass the manuals and warranty certificate to the customer.Check that the 220 – 240 V AC wiring is notconnected to the inter-unit control wiringconnector terminal.* If 220 – 240 V AC is accidentally applied,the indoor or outdoor unit control PCB fuse(0.5 A for both indoor and outdoor units)will blow in order to protect the PCB.Correct the wiring connections, thendisconnect the 2P connectors (indoor: blue)(outdoor: blue, serial 1) that are connectedto the PCB, and replace them with 2Pconnectors (indoor: brown)(outdoor: brown, serial 2).If operation is still not possible afterchanging the brown connectors, try cuttingthe varistor (black) (both indoor and outdoor).(Be sure to turn the power OFF beforeperforming this work.) (Fig. 2-9)OPERATION TIMER STANDBYIndoor control unit switchIndicator lampsOutdoor unit control PCB8 – 10 HPFig. 2-9LED1FUSE (0.5A, F500)OC (CN500, BLU)MOV2(CN301, BLK)MOV1(CN300, WHT)EMG (CN502, BRN)SILENT (CN037, WHT)PUMP DOWN (CN048)TEMINAL (CN205, BLK)R.C.ADD. Rotary switchC2 (CN020, WHT)C1 (CN021, WHT)TEST (CN033, RED)TD (CN024, BLK)TO (CN023, BLK)TS (CN022, RED)63PH (CN027, WHT)EXCT(CN030, RED)RC P(CN039, RED)IC002CTL2(CN202, GRN)CTL1(CN203, GRN)FUSE(6.3A, F101)N . P . C H E C K(CN046, RED) LED2MODE (CN038)D115(POWER LED)IC001 R.C.ADD. DIP switchA.ADD (CN047)C-CHK (CN035)EEPROMLED (D041EEPROM LED)