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6-5 If a sensor is defective

6-5-1 ICT (indoor coil sensor) OCT(outdoor coil sensor) RAT (room ambient temperature) are defective.

NOTE

Allarm signal (*)

Stan by lampoon on the front side of the indoor unit will flash on and off when the thermistor is defective.
At the same time the outdoor unit will stop. Indoor operate only for ventilation.

Temperature sensor

Lead wires

•

Stand by lamp on front side of indoor

unit is flashing on and off. (*)

•

Thermistor ICT and OCT and RAT are

defective

•

Repalce thermistor.

YES

Содержание 387106979

Страница 1: ...TECHNICAL DATA SERVICE MANUAL INDOOR UNIT CAF94R5 CAF124R5 SPLIT SYSTEM AIR CONDITIONER 0 8180 361 0 07 2005 Model No Product Code No CAF94R5 387106979 387106980 CAF124R5...

Страница 2: ...w wiring 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...

Страница 3: ...Mode 14 4 7 Protections in Heat Mode 16 4 8 Sleep Function 19 4 9 Daily Timer 19 4 10 I FEEL Function 19 4 11 Drain Pump Operation 20 5 TROUBLESHOOTING 21 5 1 Check before and after troubleshooting 2...

Страница 4: ...ensions 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 mm Volume m3 Wei...

Страница 5: ...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 mm Volume m3 Weight Unit Net kg Ship...

Страница 6: ...es Type Operating temp Open C Close C Run capacitor F VAC Flap Motor Type Model Rating No of poles rpm Nominal output W Coil resistance Ambient temp 20 C k Heat Exch Coil Coil Rows Fin pitch mm face a...

Страница 7: ...ermistor Coil sensor TH1 Resistance Thermistor Room sensor TH2 Resistance Drain pump Model Rating Voltage Input Total head capacity Safety float switch Model Contact rating 10 5 10 3 PC 309564003 220...

Страница 8: ...2 DIMENSIONAL DATA Units mm 8...

Страница 9: ...3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 9...

Страница 10: ...4 1 Cool Mode Operation 4 FUNCTION 10...

Страница 11: ...4 2 Heat Mode Operation 11...

Страница 12: ...4 3 Auto Cool Heat Mode Operation 12...

Страница 13: ...4 4 Dry Mode Operation 13...

Страница 14: ...4 5 Fan Mode Operation 4 6 Protection operations in Cool and Dry Mode 1 Indoor Coil Defrost Protection 5 Protection Operations in Cool and Dry Modes 14...

Страница 15: ...2 Outdoor Coil High Pressure Protection 15...

Страница 16: ...4 7 Protection Operations in Heat Mode 1 Outdoor Coil Deice Protection 16...

Страница 17: ...17...

Страница 18: ...2 Indoor Coil High Pressure Protection in Heat Mode 18...

Страница 19: ...4 8 Sleep Function 4 9 Daily Timer Function 4 10 IFEEL Function 19...

Страница 20: ...ogic 0 and 1 at the float switch pins connector respectively For the Fujitsu version of MCU the Overflow and Normal condition are indicated by a logic 1 and 0 at the float switch pins connector respec...

Страница 21: ...nect power or turn off circuit breaker before you start checking or servicing 5 5 1 5 1 1 5 1 2 5 1 3 5 1 4 5 2 Air conditioner does not operate 5 2 1 Circuit breaker trips or fuse blows A When the ci...

Страница 22: ...to ON Indoor PCB Ass y is defective NO Check power supply Power is being supplied to the indoor unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or contact power company R...

Страница 23: ...ary and secondary winding of transformer TR Indoor PCB Ass y is defective OK OK Measure resistance of indoor and outdoor fan motor winding FM Measure resistance of compressor motor winding CM OK Repla...

Страница 24: ...ature by temperature setting button button Outdoor unit still does not run Remote control unit is defective Try to run using another remote control unit COOL OK NO Is room temperature too high Try to...

Страница 25: ...tter in bearings Remove foreign matter or repair Repair or replace Measure resistance of outdoor fan motor winding Check fan motor capacitor Measure resistance of flap motor winding Fan cannot be turn...

Страница 26: ...otor winding is abnormally high Refrigerant gas shortage Charge refrigerant gas Measure power supply voltage Rotor may be locked up The voltage is too low 5 3 4 Compressor and outdoor fan do not run F...

Страница 27: ...emote control unit Receiver in lamp ass y may be defective may be defective Measure resistance of 4 way valve s winding COOL to HEAT Check voltage between Outdoor PCB ass y is defective terminals N an...

Страница 28: ...rtage YES Check position of remote control unit Cool or warm air from air conditioner reaches position directly Change position of remote control unit Wide and narrow tubes between indoor unit and out...

Страница 29: ...lampoon on the front side of the indoor unit will flash on and off when the thermistor is defective At the same time the outdoor unit will stop Indoor operate only for ventilation Temperature sensor...

Страница 30: ...sulation resistance tester and measure 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 Mea...

Страница 31: ...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 go...

Страница 32: ...R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728...

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