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6-2 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

6-3 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

33

Содержание 387106939

Страница 1: ...VICE MANUAL INDOOR UNIT CA92R5TA CAV92R5TA CA122R5TA CAV122R5TA SPLIT SYSTEM AIR CONDITIONER 0 8180 252 0 07 2002 387106940 387106939 387106943 CAV92R5TA CA122R5TA CAV122R5TA Model No Product Code No...

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: ...erload Prevention Heating 19 4 7 Cold Draft Prevention Heating 20 4 8 Defrosting Operation Heating 21 4 9 Drain Pump and float switch 22 5 TROUBLESHOOTING 23 5 1 Check before and after troubleshooting...

Страница 4: ...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 Weight Unit Net...

Страница 5: ...epth 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 Shipping kg Ceili...

Страница 6: ...epth 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 Shipping kg Ceili...

Страница 7: ...epth 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 Shipping kg Ceili...

Страница 8: ...devices 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...

Страница 9: ...rating 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 area m2 DATA...

Страница 10: ...perating temp Open C Close 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 area DATA SU...

Страница 11: ...perating temp Open C Close 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 area DATA SU...

Страница 12: ...sor TH1 Resistance Thermistor Room sensor TH2 Resistance Drain pump Model Rating Voltage Input Total head capacity Safety float switch Model Contact rating 230V AC DC 0 5A 0 4 l min BI 1300 2725 PC 30...

Страница 13: ...2 DIMENSIONAL DATA Units mm 13...

Страница 14: ...3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 14...

Страница 15: ...trol circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF not before than 5 minutes of compres...

Страница 16: ...ive measure the control circuit switches the compressor OFF not before than 5 minutes of compressor operation Thermo ON When the room temperature is below T 1 C T C is set temperature Compressor ON Th...

Страница 17: ...es the difference between the set temperature and the room temperature and automatically switches to COOLING or HEATING mode to maintain the desired temperature Room temp Set temp COOL Room temp Set t...

Страница 18: ...overcurrent When the compressor current exceeds either H1 A for 2 seconds or H2 A for 8 seconds both compressor and outdoor fan stop Trip At the same time operation lamp in front of the indoor unit f...

Страница 19: ...r heat exchange coil rises above A1 C the outdoor fan stops The operation temperatures shown as A1 A2 A3 and A4 in the chart differs by models NOTE ON ON OFF ON H or M or L H H M M L M A1 A2 A3 A4 Ind...

Страница 20: ...function is working Indoor fan operates in LL until indoor heat exchange coil temperature reaches 32 C After releasing the defrosting indoor fan halt its operation until the coil temperature reach 32...

Страница 21: ...g time of compressor is longer than 3 hours temperature of indoor heat exchanger coil immediately before thermo goes off is below Td 5 6 C etc NOTE The values shown as Td differs according to the mode...

Страница 22: ...20 min 20 min 3 min Defrosting Mode Timing Chart ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF 60 seconds Max 8 to 12 minutes 60 seconds Start of defrosting Release of defrosting OFF OFF Release of cold...

Страница 23: ...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 24: ...elector switch 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...

Страница 25: ...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 26: ...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 27: ...matter 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 t...

Страница 28: ...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 5 Compressor and outdoor fan do not run F...

Страница 29: ...t Receiver in lamp ass y may be defective may be defective Measure resistance of 4 way valve s winding 20S COOL to HEAT Check voltage between terminals Outdoor PCB ass y is defective N 4 N 6 at termin...

Страница 30: ...bility of gas shortage 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 in...

Страница 31: ...will blink when either indoor coil thermistor or room air thermistor is defective At the same time the outdoor unit will stop Indoor unit will operate only for ventilation NOTE Operation lamp on fron...

Страница 32: ...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 33: ...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 34: ...s on the PCB of each indoor unit with the switch positions of its remote control unit To change address on PCB 1 Set the switch n 2 to off position on the address dip switch S01 see detail on figure T...

Страница 35: ...T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728 R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France...

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