background image

7-2. Checking Continuity of Fuse

on PCB Ass'y

Remove the PCB Ass’y from the electrical

component box. Then pull out the fuse from the PCB

Ass’y. (Fig. 5)

Check for continuity using a multimeter as shown in

Fig. 6.

7-3. Checking Motor Capacitor

Remove the lead wires from the capacitor terminals,

and then place a probe on the capacitor terminals as

shown in Fig. 7. Observe the deflection of the pointer,

setting the resistance measuring range of the

multimeter to the maximum value.

The capacitor is “good” if the pointer bounces to a

great extent and then gradually returns to its original

position.

The range of deflection and deflection time differ

according to the capacity of the capacitor.

Fuse

PCB Ass’y

Fuse

Compressor motor 
capacitor

Fan motor
capacitor

Multimeter

Fig. 5

Fig. 6

Fig. 7

6-2.

6-3.

18

Summary of Contents for 387106971

Page 1: ...TECHNICAL DATA SERVICE MANUAL INDOOR UNIT CAF184MR5IA SPLIT SYSTEM AIR CONDITIONER 0 8180 393 1 09 2006 387106971 Model No Product Code No CAF184MR5IA...

Page 2: ...ing to touch the refrigerant tubing compressor or any moving parts of the fan Do not use multi core cable when wiring the power supply and control lines Use separate cables for each type of line When...

Page 3: ...ECTRICAL DATA 8 3 1 Electric Wiring Diagrams 8 4 FUNCTION 9 4 1 Operation Functions 9 4 2 Protective Functions 11 4 3 Drain Pump and Float Switch 12 5 TROUBLESHOOTING 13 6 CHECKING ELECTRICAL COMPONEN...

Page 4: ...ions Weight Dimensions Unit Height mm Width mm Depth mm Ceiling panel Height mm Width mm Depth mm Package dimensions Unit Height mm Width mm Depth mm Volume m3 Ceiling panel Height mm Width mm Depth m...

Page 5: ...Close Run capacitor F VAC Flap Motor Type Model Rating Coil resistance Ambient temp 25 C Heat Exch Coil Coil Rows Fin pitch mm face area m2 DATA SUBJECT TO CHANGE WITHOUT NOTICE BLK GRY 78 7 90 5 GRY...

Page 6: ...oat switch Model Contact rating 0 4 l min BI 1300 2725 230 V AC DC 0 5 A PC 309564003 220 240 V 50 Hz 14 W Primary WHT WHT 307 10 Secondary BRN BRN 1 8 10 ATR I55 AC 230 V 50 60 Hz 13 7 V 0 4 A 5 48 V...

Page 7: ...2 DIMENSIONAL DATA Unit mm 7...

Page 8: ...3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 8...

Page 9: ...t low operation speeds and PAM control at high operation speeds making the most effective use of power The compressor operation frequency varies depending on the relative humidity The indoor fan opera...

Page 10: ...temperature either 60 minutes prior or 30 minutes prior to the set ON timer time and operation is started in advance of the set ON time The indoor fan speed is Medium COOL Indoor temperature Set temp...

Page 11: ...tops Once the freeze condition is detected the air conditioner will work less than the maximum frequency until it is turned off Approx 53 Normal operation At start of operation A High LL Stopped A B C...

Page 12: ...4 3 Drain Pump and Float Switch...

Page 13: ...wer is not ON Follow the procedure below to perform diagnostics Operation switch Ordinarily be sure this is always set to NORMAL The DEMO position is used for inspections and similar maintenance Opera...

Page 14: ...ostics contents Control 1 Control 2 Initial self Short circuit terminals 2 and 4 on Short circuit terminals 2 and 3 on Probable location of malfunction diagnostics the indoor unit terminal plate the o...

Page 15: ...MO and start operation using the remote controller If there are no problems with the above then check the outdoor unit 1 The rated voltage must be present between inter unit cables 1 and 2 Connect a 5...

Page 16: ...tance from the noise source 1 Use shielded wires 2 Move unit away from the noise source Trouble Either of the following trouble may occur 1 The unit may stop suddenly during operation 2 Indicator lamp...

Page 17: ...sure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 6 1 4 Measurement of Insulation Resistance...

Page 18: ...n place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good i...

Page 19: ...R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00...

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