Daikin FT25JV1B Installation Manual

Operation ManualforTransmission Monitor RSUK0919ENGLISHCHINESEJAPANESEAFTER SALES SERVICE DIVISIONGLOBAL SERVICE DEPT,ORSUK0919

96. Transmission Monitor display Since the number of letters to display on the LCD of Transmission Monitor is limited, abbreviations are used to displ

106-2 Contents of line 2 to 4 Line 2 through 4 displays data received. However, since the position to display the data received is specified (for exam

11 6-4 Meaning of Abbreviation Transmission from outdoor unit to indoor unitAbbreviationsin English MeaningAbbreviationsin EnglishMeaning Active ON

127. Problem diagnosis Since the respective model has its own characteristics, all problem diagnosis cannot be described in details. This chapter desc

13 Procedure of Indoor Unit Diagnosis If LED-B (green) on indoor unit P

14NGOKNOOKYESYESNGNOONBlinksIs LED-A turned on by turning thepower supply back on? Is indoor unit data displayed with transmissionmonitor

15YESNOOKNGNOYESDoes the fuse on indoor unit PC boardor power supply line, etc. hascontinuity? Replace the fuse. (Probe possible causes of melt d

16Replace indoor unit PC board. Malfunction 7-3: Indoor Unit LED-B OnPossible causesԘ Faulty indoor unit PC board(Reference) LED-B displays t

17YESNONOYESIs outdoor unit data displayed withtransmission monitor connected toterminal board of indoor unit? ࡮Faulty outdoor unit PC board ࡮

18Blinks (normal) NGOKNOOKYESYESNGNOONOFFIs outdoor unit data displayed with transmission monitor connected to terminal board of either indoor or outd

1Operation Manual forTransmission Monitor RSUK0919 DAIKIN INDUSTRIES, LTD.AFTER SALES SERVICE DIVISION GLOBAL SERVICE DEPT,

19OKYESNGYESNONGNOYESNOOKOFFBlinksIs LED-A turned off by turningpower supply back on? Is correct power supply voltage supplied? Does LED-A blink right

20࡮Faulty transmission wire ࡮Faulty indoor unit PC board ࡮Incorrect combination of indoor and outdoor units (Note 1) This No.2 means that the wi

21NOYESYESNOYESNGOKIs correct voltage supplied to bothindoor and outdoor units? Recheck the power supply. NODisconnect No.2 transmission wire

22NOYESError code “U4” is displayed on thetransmission monitor at all times. Temporary transmission error is possible.Wait for the malfu

23YESNOOKYESNOIs the unit operating beyond thespecified range? Explain the specified range for continuous operation to improve the operating cond

24NOOKNGOKNGOKIs value of each temperature thermistor close to measured value? Securely connect the connectors to check operation.YESIs abnormal value

25NOYESNONGOKNONGOKIs value of each temperature thermistorclose to measured value?Replace the thermistor. (If the malfunction is not remedied even whe

26㧺㧳OKOK㧺㧳OKNGOKIs indoor unit set to desired operatingmode? (Note) Change the operating mode, set temperature, etc. NGIs value of each temper

27Malfunction 7-12: Problem Diagnosis for Twin/Triple/Double twin multi-unit of Skyair using a R22 refrigerantPossible causeThis system is provid

28Malfunction 7-13: Water leakage occurs under a certain condition. Possible causesIt may be difficult to reproduce water leakage under a cer

2Contents1㧚Application ...

29Malfunction 7-14: Noise occurs from compressor (main unit).Possible causesIt may be difficult to reproduce abnormal noise from compressor at fa

308. Check method of microcomputer software version built in transmission checker When supplying power for the Transmission Monitor by pushing the IN/

3Transmission Monitor has advantages as follows, which will allow to prevent incorrect diagnose and reduce man-hours for maintenance. 1. Ma

41㧚ApplicationThis operation manual describes Transmission Monitor RSUK0919 (hereinafter referred to the Transmission Monitor) developed by Daikin Ind

5Applicable/non-applicable model list Example of applicable model (room air conditioner) Example of non applicable model (room air conditioner) Model

6Figure 1 Figure 2 Figure 3 TC㧦Transmission circuit RC㧦Receiving circuit Transmitting photo triac Receiving photo-coupler

74. Connection method to product Basically, Transmission Monitor should be connected to the communication wires (3 wires) of indoor and outdoor units.

85. Operation method Turn the power on to the product after connecting the Transmission Monitor according to “4.Connection method to product". Af