English 26• After cleaning the indoor unit inside and the suction grille, carry out test run according to installation manualattached to the outdoor unit.• When the remote controller operation lamp flashes, it shows that something is abnormal. Check the mal-function codes on the remote controller. The relation between the malfunction codes and abnormal detailsis described in the operation manual attached to the outdoor unit. Particularly, if the indication is one ofthose shown in the Table 6, it may be an error in the electrical wiring or the power supply is disconnected.Therefore, recheck Table 6.Table 6CAUTIONAfter test operation is completed, check the items mentioned in the clause 2 “2. Items to be checked at deliv-ery” on page 4.If the interior finish work is not completed when the test operation is finished, for protection of the system, askthe customer not operate the indoor unit until the interior finish work is completed.If the system is operated, the inside of the indoor units may be polluted by substances generated from thecoating and adhesives used for the interior finish work and cause water splash and leakage.To the operator carrying out test operationAfter test operation is completed, before delivering the air conditioner to the customer, confirm that the controlbox lid, the air filter and suction panel are attached.In addition, explain the power supply status (power supply ON/OFF) to the customer.11. WIRING DIAGRAM(Refer to Fig. 36)Remote controller indication DetailsThough the centralized control isnot carried out, the lamp“ ” turns on.• The terminals (T1 · T2) for FORCED OFF on the indoor unit trans-mission terminal block is short circuited.“U4” turns on“UH” turns on• The power supply to the outdoor unit is not made.• The power supply work to the outdoor unit is not carried out.• The transmission wiring and the remote controller wiring andFORCED OFF wiring are connected wrongly.• The transmission wiring is disconnected.No indication• The power supply to the indoor unit is not made.• The power supply work to the indoor unit is not carried out.• The remote controller wiring and the transmission wiring andFORCED OFF wiring are connected wrongly.• The remote controller wiring is disconnected.1 (NOTE 6) 2 (NOTE 3)3WIRELESS REMOTE CONTROLLER(RECEIVER/DISPLAY UNIT)(OPTIONAL ACCESSORY)4 INPUT FROM OUTSIDE (NOTE 7)5 TRANSMISSION WIRING (NOTE 2)CENTRAL REMOTE CONTROLLER 6 (NOTE 4)7 WIRED REMOTE CONTROLLER(OPTIONAL ACCESSORY) 8 CONTROL BOX
