70

10-9. TEST POINT DIAGRAMOutdoor controller circuit boardPUZ-A18/24/30/36/42NHA6 PUZ-A18/24/30/36/42NHA6-BSPUY-A12/18/24/30/36/42NHA6 PUY-A12/18/24/30/36/42NHA6-BS

<CAUTION>TESTPOINT1ishighvoltage.

CommunicationpowersupplyD71Voltage24VDC

CNSS1–S2:A208/230VAC

CNAC2–4:Powersupplyforout-doorcontrollercircuitboard(208–230VAC)1–3:Powersupplyforindoorandoutdoorunitcon-nectionwire(208/230VAC)

CNF1,CNF2Connecttothefanmotor1–4:280VDC5–4:15VDC6–4:0–6.5VDC7–4:15VDC(Whenstopped)

7.5VDC(Whenoperated)(0–15Vpulse)(CNF2isonlyforA42)

21S44-wayvalve(PUZonly)

63HHighpressureswitch

SV2Bypassvalve(A24/30/36only)

CN4Transmissiontoout-doorpowercircuitboard(CN4)

SW4Testoperation

SW6Modelselect

SW5Functionswitch

SW1Manualdefrost,detecthistoryrecordreset,refrigerantaddress

CNDM1–2:Inputoflow-levelsoundprioritymode1–3:Inputofexternalcon-tactpoint

TH3Thermistor<Liquid>

TH7/6Thermistor<Ambient/2-phasepipe>

CNDC280VDC(1+,3−)(Outdoorpowercircuitboard)

+−

VFG

(TESTPOINT4)(VoltagebetweenrightpinsofPC5CandPC5D,pin3andpin4)(Sameas(CNF17(+)–4(−))

VSP

(TESTPOINT3)(VoltagebetweenpinsofC5A,C5B):0VDC(whenstopped),1–6.5VDC(whenoperated)

SW7Demandcontrolsetting

CN51Externalsignaloutput•Compressoroperatingsignal

•Abnormalsignal

LEV-ALinearexpansionvalve

SWPPumpdown

SW8Wiringreplace

CNMConnecttoAcontrolservicetool

CNMNTConnecttoM-NETadapter(CN5)

CNVMNTConnecttoM-NETadapter(CND)

CN2Connecttotheoutdoorpowercircuitboard(CN2)1–5:Receptionfrom powercircuitboard2–5:Zerocrosssignal (0–5VDC)3–4:18VDC6–5:16VDC7–5:16VDC

CN52C(Connecttothenoisefiltercircuitboard(CN52C))

63LLowpressureswitch

TH32Thermistor<Comp.surface>

TH33Thermistor<Suction>

OCH577A

71

Outdoor noise filter circuit boardPUZ-A18NHA6 PUZ-A18NHA6-BSPUY-A12/18NHA6 PUY-A12/18NHA6-BS

LO,NOVoltageof208/230VACisoutput.(ConnecttotheACL)

CN52C52Crelaysignal(Connecttotheoutdoorcontrollercircuitboard(CN52C))

CN5Primarycurrent(Connecttotheoutdoorpowercircuitboard(CN5))

CNAC1,CNAC2208/230VAC(Connecttotheoutdoorcontrol-lercircuitboard(CNAC))

EIConnecttotheearth

LI,NIVoltageof208/230VACisinput.(Connecttotheterminalblock(TB1))

E3Connecttotheearth

E2Connecttotheearth

OCH577A

72

LO,NOVoltageof208/230VACisoutput.(ConnectACL)

CN52C52Crelaysignal(Connecttotheoutdoorcontrollercircuitboard(CN52C))

CN5Primarycurrent(Connecttotheoutdoorpowercircuitboard(CN5))

CNAC1,CNAC2208/230VAC(Connecttotheoutdoorcontrol-lercircuitboard(CNAC))

EI,E2Connecttotheearth

E3Connecttotheearth

Outdoor noise filter circuit boardPUZ-A24NHA6 PUZ-A24NHA6-BSPUY-A24NHA6 PUY-A24NHA6-BS

OCH577A

73

CNAC1,CNAC2208/230VAC(Connecttotheoutdoorcontrol-lercircuitboard(CNAC))

EIConnecttotheearth

LI,NIVoltageof208/230VACisinput.(Connecttotheterminalblock(TB1))

E2Connecttotheearth

LO,NOVoltageof208/230VACisoutput(Connecttotheoutdoorpowercircuitboard(TABS,TABT))

PTC1,PTC2

CN52C52Cdrivingsignal(Connecttotheoutdoorcontrollercircuitboard(CN52C))

CN5Primarycurrent(Connecttotheoutdoorpowercircuitboard(CN5))

Outdoor noise filter circuit boardPUZ-A30/36/42NHA6 PUZ-A30/36/42NHA6-BSPUY-A30/36/42NHA6 PUY-A30/36/42NHA6-BS

OCH577A

74

CN2Connecttotheoutdoorcontrollercircuitboard(CN2)1–5:Outdoorpowercircuitboard→Transmittingsignaltotheoutdoorcontrollercircuitboard(0–5VDC))2–5:Zerocrosssignal(0–5VDC)3–4:Notused6–5:16VDC7–5:16VDC

Outdoor power circuit boardPUZ-A18NHA6PUZ-A18NHA6-BSPUY-A12/18NHA6PUY-A12/18NHA6-BS

1,2,6,7:+ 5:– ][

LD1-LD2280–380VDCConnecttotheoutdoorcontrollercircuitboard(CNDC)

R,SConnecttotheACL208/230VAC

U,V,WConnecttothecompressor(MC)Voltageamongphases:5to180VAC

LD9ConnecttotheearthOnlyA24

CN5Primarycurrentdetection(Connecttotheoutdoornoisefiltercircuitboard(CN5))

CN4Connectfromtheoutdoorcontrollercircuitboard(CN4)

CN3Thermistor<Heatsink>(TH8)

DIP-IPM

DIP-PFC

Brief check of DIP-IPM and DIP-PFCUsually,theyareinastateofbeingshort-circuitediftheyarebroken.Measuretheresistanceinthefollowingpoints(connectors,etc.).Iftheyareshort-circuited,itmeansthattheyarebroken.1.CheckofDIP-IPMP-U,P-V,P-W,N-U,N-V,N-W2.CheckofDIP-PFCP-R,P-S,R-N,S-N

OCH577A

75

TABPConnecttothesmoothingcapacitorCB+(A42Nonly)

Outdoor power circuit boardPUZ-A30/36/42NHA6PUZ-A30/36/42NHA6-BSPUY-A30/36/42NHA6PUY-A30/36/42NHA6-BS

TABP1Connectto52C

TABP2/SC-P2ConnecttoACTM

CN4Connecttotheoutdoorcontrollercircuitboard(CN4)

CN2Connecttotheoutdoorcontrollercircuitboard(CN2)1–5:Transmittingsignaltotheoutdoor controllercircuitboard(0–5VDC)2–5:Zerocrosssignal(0–5VDC)3–4:18VDC6–5:16VDC7–5:16VDC

CN3Thermistor(TH8)<Heatsink>

CN5DetectionofprimarycurrentConnecttotheoutdoornoisefiltercircuitboard(CN5)

CNDC280–380VDC(1+,3−)Connecttotheoutdoorcontrollercircuitboard

TABS/TABTConnecttotheoutdoornoisefil-tercircuitboardVoltageamongphases:208/230VAC

Brief check of POWER MODULEUsually,theyareinastateofbeingshort-circuitediftheyarebroken.Measuretheresistanceinthefollowingpoints(connectors,etc.).Iftheyareshort-circuited,itmeansthattheyarebroken.1.Checkofdiodebridge TABP1-TABS,TABN1-TABS,TABP1-TABT,TABN1-TABT2.CheckofDIP-IPM P-U,P-V,P-W,N-U,N-V,N-W

TABN2ConnecttoACTM

TABNConnecttothesmoothingcapacitorCB–(A42Nonly)

TABU/V/WConnecttothecompressor(MC)Voltageamongphases:10–180VAC

TABN1ConnecttoACTM

DIP-IPM

CNAFConnecttoACTM

OCH577A

76

Active filter modulePUZ-A30/36/42NHA6 PUZ-A30/36/42NHA6-BSPUY-A30/36/42NHA6 PUY-A30/36/42NHA6-BS

L1,L2ConnecttotheDCL(Reactor)

Connecttotheoutdoorpowercircuitboard(TABP1)

Connecttotheoutdoorpowercircuitboard(TABN1)

+

– IoConnecttotheoutdoorpowercircuitboard(TABN2)

N2Non-connect

N1Non-connect

PConnecttotheoutdoorpowercircuitboard(TABP2)

Connecttotheoutdoorpowercircuitboard(CNAF)1 :GND2–1:18VDC3–1:Controlsignal4,5:Notused6–1:Controlsignal

Upper side Lower side

DCL

L1 L2 ACTM

P

Io

N1N2

(+)

(–)

Load+

Connection and internal circuit diagram

Errorcondition Normalvalue(reference) Symptomwhentheunitisintrouble

(–)andIo open lessthan1" 1Theunitdoesnotoperate(cannotbeswitchedON)

(–)andL2short 100k" to1M" 1Thebreakeroperates

open *1 1Theunitdoesnotoperate(cannotbeswitchedON)2U9Abnormalstop(*2)

PandL2short 100k" to1M" 1Thebreakeroperates

open *1 1Theunitdoesnotoperate(cannotbeswitchedON)2U9Abnormalstop(*2)

PandIoshort 100k" to1M" 1Thebreakeroperates

open *1 1Theunitdoesnotoperate(cannotbeswitchedON)2U9Abnormalstop(*2)

L2andIoshort 100k" to1M" 1Thebreakeroperates

open *1 1Theunitdoesnotoperate(cannotbeswitchedON)2U9Abnormalstop(*2)

TestercheckpointsofActivefiltermodule

*1Thesymptomwhentheunitisinopenerrorconditionisdescribedtodetermineopenerrorbytestercheck.*2SW2setting:Code"20"display

1 6

ONOFF

OCH577A