Curtis WB5GT Series - Troubleshooting Guide; Technician Safety and Valve Testing; Power and Display Issues

TROUBLESHOOTING GUIDE TG32
WB5, TROUBLESHOOTING GUIDE 010518NC
WARNING:
Electric Shock Hazard - UIFGPMMPXJOHQSPDFEVSFTBSFUPCFQFSGPSNFEPOMZCZBRVBMJmFETFSWJDFUFDIOJDJBO
%JTDPOOFDUQPXFSXIFOSFQMBDJOHDPNQPOFOUT-PDLPVUBOEUBHUIFDJSDVJUCSFBLFS/FJUIFS8JMCVS$VSUJT
$P*ODOPSUIFTFMMFSDBOCFIFMESFTQPOTJCMFGPSUIFJOUFSQSFUBUJPOPGUIJTJOGPSNBUJPOPSBOZMJBCJMJUZJO
DPOOFDUJPOXJUIJUTVTF
Scald and Burn Hazard -LFFQCPEZQBSUTDMFBSPGIPUTVSGBDFTEVSJOHUSPVCMFTIPPUJOH
Troubleshooting Guidelines
• If an error message appears on the display, consult the ERROR CODESTFDUJPOCFGPSFUSPVCMFTIPPUJOH
• "VOJUUIBUJTOPUMFWFMNBZOPUGVODUJPOQSPQFSMZ.BLFTVSFUIBUUIFVOJUJTQSPQFSMZMFWFMFECFGPSFQSPDFFEJOH
• 5IJTUSPVCMFTIPPUJOHHVJEFJEFOUJmFTTPNFCVUOPUBMMQPTTJCMFDBVTFTGPSDPNNPOQSPCMFNTUIBUDBOPDDVS
• Use this troubleshooting guide along with the appropriate ELECTRICAL SCHEMATIC.
Valve Test Procedure
6TFBEJHJUBMNVMUJNFUFSUPNFBTVSFUIFSFTJTUBODFPGWBMWFDPJMT
.FBTVSFUIFSFTJTUBODFBDSPTTUIFWBMWFDPJMUFSNJOBMTXJUIUIFXJSJOHIBSOFTTEJTDPOOFDUFE3FWFSTFUIFNFUFS
MFBETPOUIFUFSNJOBMTBOENFBTVSFUIFSFTJTUBODFJOUIFPQQPTJUFEJSFDUJPO"SFTJTUBODFPGMFTTUIBOPINT
in either directionJOEJDBUFTBTIPSUFEDPJM5IFWBMWFNVTUCFSFQMBDFE
If a shorted coil is not detected, test for an open coil:
1 3FDPOOFDUUIFWBMWFUFSNJOBMTUPUIFXJSJOHIBSOFTT
2 1PXFSVQUIFVOJUXJUIUIFBQQSPQSJBUFDPWFSSFNPWFEUPBMMPXBDDFTTUPUIFWBMWF
3 1MBDFBMBSHFDVQVOEFSUIFXBUFSGBVDFU%SBJOPGGXBUFSXIJMFNPOJUPSJOHUIFWPMUBHFBUUIFJOMFUWBMWFDPJM
UFSNJOBMT8IFOWPMUBHFJTQSFTFOUPOUIFUFSNJOBMTZPVTIPVMEIFBSUIFWBMWFDMJDLPQFODMPTFEBUUIF
NPNFOUQPXFSJTBQQMJFEPSSFNPWFEGSPNUIFUFSNJOBMT5IFWBMWFTIPVMEPQFOBOZUJNFUIFXBUFSUBOLJTOPU
GVMM*GUIFWBMWFEPFTOPUPQFOSFQMBDFJU*GWPMUBHFJTOPUEFUFDUFEmSTUDIFDLUIFXJSJOH*GUIFXJSJOHJT0,
SFQMBDFUIF6$.
No Power - Display Not Lit
1 .BLFTVSFUIBUUIFDJSDVJUCSFBLFSUPUIFDJSDVJUTVQQMZJOHQPXFSUPUIFVOJUJTOPUUSJQQFEBOEJTUVSOFEPO
2 0OVOJUTXJUIBQPXFSQMVHNBLFTVSFJUJTDPOOFDUFEUPUIFQPXFSSFDFQUBDMF
3 .BLFTVSFUIBUUIFNBJOQPXFSUPHHMFTXJUDIPOUIFCBDLQBOFMJTUVSOFE0/
4 7FSJGZUIBUBMMXJSFTGSPNUIFQPXFSDPSEBSFQSPQFSMZDPOOFDUFEJOTJEFUIFVOJU$IFDLUPNBLFTVSFUIFXJSFT
BSFOPUCVSOFEPWFSIFBUFE-PPTFDPOOFDUJPOTDSFBUFIFBU$IFDLDIBTTJTHSPVOE
5 $IFDLUPNBLFTVSFQPXFSBOEHSPVOEBSFCFJOHTVQQMJFEUPUIFDPOUSPMNPEVMF6$.*GUIFSFJTQPXFSJOUP
UIF6$.CVUUIFEJTQMBZJTCMBOLUIF6$.JTQSPCBCMZCBE
6 *GUIFSFJTOPQPXFSJOUPUIF6$.USBDFUIFDJSDVJUCBDLVTJOHUIFELECTRICAL SCHEMATICUPUIFQPXFS
DPSEUPmOEPVUXIFSFQPXFSJTMPTU*GUIFSFJTQPXFSJOUPUIFUIFSNPTUBUSFTFUTXJUDICVUOPUPVUTFFTUFQ
 *GUIFSFJTQPXFSJOUPUIFUIFSNPTUBUSFTFUTXJUDICVUOPUPVUDIFDLUPNBLFTVSFUIBUUIFXBUFSUBOLJTOPU
FNQUZ*GUIFUBOLJTFNQUZUIFSFTFUTXJUDIIBTQSPCBCMZPQFOFEVQEVFUPBMPXXBUFSMFWFMHPUPWater
Tank Does Not Fill*GUIFSFJTXBUFSJOUIFUBOLCVUOPQPXFSPVUQVTIJOPOUIFSFTFUTXJUDICVUUPOUPTFF
JGJUSFTUPSFTQPXFS*GQPXFSJTSFTUPSFEDIFDLUPNBLFTVSFUIBUUIFTXJUDIJTOPUPQFOJOHVQBUUIFXSPOH
UFNQFSBUVSFUIFTXJUDITIPVMEOPUPQFOVQBUOPSNBMPQFSBUJOHXBUFSUFNQFSBUVSFT*GUIFSFJTTUJMMOPQPXFS
UISPVHIUIFTXJUDIBGUFSQVTIJOHUIFCVUUPOSFQMBDFUIFUIFSNPTUBUSFTFUTXJUDI
IMPORTANT: *GJUJTOFDFTTBSZUPSFQMBDFUIF(VOJWFSTBMDPOUSPMNPEVMF6$.alwaysDIFDLUIFJOMFU
WBMWF GPS BTIPSU BOE SFQMBDFUIF WBMWF BT OFDFTTBSZ CFGPSF SFQMBDJOHUIF NPEVMF 4FF UIF Valve Test
ProcedureCFMPXUPUFTUGPSEFGFDUJWFWBMWFT