Glow-worm Ultracom2 sxi - Page 35

0020112600_02-10/12-Glow-worm
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MAINTENANCE


  
F26 Faultingasvalvemotor. Disconnectedordefectivecables
•Checkthegasvalveconnections.
•Checktheoperationofthegasvalve.
•Checktheoperationofthecondensatepump(option).
F27 Flamedetectionfault. Abnormalamedetection
•Checktheamedetectionelectrode.
•Checkthemainboard.
•Checktheigniterunit.
F28 Ignitionfault
Noreturngas/Insufcientgasow
Gasvalveincorrectlyadjusted
Defectiveringelectrodeandame
control/Defectiveigniterunit
•Checkthereturngascircuit(gasvalveopen).
•Checktheobservetheamepictureandcheck
theCO
2
setting.
•Checktheigniterunitconnections.
•Checkthestateoftheelectrode(corrosion).
F29 Lossofameduringoperation
F32 Incorrectairpressure Incorrectfanspeed.
•Checktheentireuesystem.
•Checkthefan’selectricalconnections.
F49 EBUSvoltagefault
FaultinEBUSline
ShortcircuitinEBUSconnector
•CheckthattheeBuscontrolsarettedandwired
correctly.
F61
Faultinthemainboard
Gasvalvecommandfault
•Checkthemainboardsconnections.
•Checkthemainboard.
•ChecktheapplianceDSNnumberiscorrect.
•Resettheappliance.
F62 Gasvalveclosurefault
F63 Faultinthemainboardmemory
F64
Rapiductuationofreturnorow
heatingsensor.
F65 Excessivemainboardtemperature
F67 Flamesignalfaultinthemainboard
F68 Fluctuationofamesignal
Noreturngas/Insufcientgasow
Gasvalveincorrectlyadjusted
Defectiveringelectrodeandame
control/Defectiveigniterunit
•Checkthereturngascircuit(gasvalveopen).
•Checktheobservetheamepictureandcheck
theCO
2
setting.
•Checktheigniterunitconnections.
•Checkthestateoftheelectrode(corrosion).
F70
Userinterfaceincompatiblewiththemain
board
Incorrectproductcode
•CheckthattheapplianceDSNcodeonthescreen
matchestheproductcodeofthenameplate(inthe
eventofafaultandtheapplianceDSNdoesnot
appear,consultmenu.d.93reservedforthecode).
•Checktheboardsreference.
F71 Flowheatingtemperaturesensorfault
Flowheatingtemperaturesensor
unclippedordefective(no
temperaturevariation)
•Checkthesensorconnections.
•Makesurethatthesensorisclippedtothetube.
F72
Permanenttemperaturedifferencebetween
owandreturnheatingsensors
Mismatchbetweentheowandreturn
heatingtemperatures(permanent
difference)
•Checktemperaturesensorsconnections.
•Replacefaultysensors.
F73 Heatingcircuitpressuresensorfault Thesensorisshortedordisconnected.
•Checkthesensor’sconnections.
•Checkthesensor.
F74 Heatingcircuitpressuresensorfault Faultinpressuresensor
F76 Thermalfusefault
Thermalfusedisconnected
Defectivethermalfuse
•Checkthefusesconnections.
•Replacetheheatexchanger.
F77 Faultingasvalvemotor.
Defectivegasvalve.
Defectivecondensatepump(option)
•Checkthegasvalveconnections.
•Checktheoperationofthegasvalve.
•Checktheoperationofthecondensatepump(option).
F83
Nowaterintheinstallation:thetemperature
doesnotincreasewhentheburnerislit
Returnwatervalveclosed
Pumpdisconnected
Leakintheinstallation
•Filltheinstallation.
•Purgetheinstallation.
•Checkthepumpconnections.
•Checktheowandreturnheatingsensor
connections.
•Checkthattherearenoleaks.
F84
Permanenttemperaturedifferencebetween
owandreturnheatingsensors
Invertedordisconnectedowand
returnheatingtemperaturesensors
Defectivetemperaturesensors
•Checktemperaturesensorsconnections.
•Replacefaultysensors.
F85 Flowandreturnheatingsensorsfault
Flowandreturnheatingtemperature
sensorconnectedtosametube
•Checktemperaturesensorsconnections.
F86 Underoorheatingcontactfault
Floorheatingcontactopen
Sensordisconnectedordefective
•Checkthesensorconnections.
•Checkthatthesensorisconnectedtothemain
boardandtheshuntisremoved.
Err Userinterfacefault Defectiveuserinterface
•CheckconnectionfromuserinterfacePCBtomain
PCB.
•Replaceuserinterface.