MCS300
6.3Faulttracinglist
GothroughthefollowingfaulttracinglistbelowbeforecontactingMunters’productservicedepartment.
Thelistprovideshelpinidentifyingtypesoffaultsthatareeasytoremedywithouttheassistanceofspecially
trainedpersonnel
FaultsymptomPossibleCauseCorrectiveaction
On-offswitchturnedoffbymistake.Placetheon-offswitchintheonpositionandcheckthat
dehumidierstarts.
Nomainspowertounit.Checkmainspowertounit.
Dehumidierswitchedtoautomaticmode
bymistakewithnohumidistatconnected.
Settheoperatingmodetomanualmodeandcheckthatthe
dehumidierstarts.
Settheoperatingmodetomanualmodeandcheckthattheunit
starts.Iftheunitstarts,thehumidistatisprobablyatfault.
Unithasstopped.
Humidistatfault(automaticmodes).
Checkthehumidistatbyseeingifthedehumidierstarts
whenthehumidistatsetpointisreduced.Resetthehumidistat
setpointafterthecheck.Calibratethehumidistatifnecessary.
Dehumidierhasstopped
andfaultindicationis
blinking.
Thermostatforreactivationheaterhas
tripped.
ContactMunters’productservicedepartment.
Dehumidierisrunning
andconstantfault
indication.
Warningforabnormalreactivetemperature
increase.
Checkthatltersandductingforincomingairarenotblockedby
foreignobjectsorpluggedbydirt.Increasereactivationairow
byslowlyopeningthedamper.
Airowsarefaulty.Checkductingandltersforblockageandleakage. Dehumidication
capacityhasdiminished.
Humidistatnotfunctioningproperly
(automaticmodes)
Checkhumidistatfunctionandcalibrateasrequired.Contact
Muntersproductservicedepartment.
Table6.1Faulttracinglist
190TEN-1027-F1404Faulttracing18
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