What To Do If - Elsteam KT Series Manual

11. WHAT TO DO IF...

1. Whenthehumidifierisswitchedon,signal1"machineon"doesnotcomeon.
• Checkthepowersupplyterminalsarereceivingpower;
• Checkthepowerfusesareintherightposition;
• CheckfuseFofthetransformerprimaryisinstalledcorrectly;
•  C heckthecoverofthehumidifierelectricsiswellsecuredandkeepingthe"coverclosed"microswitchenergised;
• Checkthe"machineon"switchispresseddown.
2. Whenthehumidifierisswitchedon,thewatersupplysolenoidvalvedoesnotfeedwater.
• Checkthepowersupplycircuitisopen;
• Checkthefilterisnotblocked;
• Checkthesolenoidvalveiscorrectlypoweredwith12Vdc;
•  A fterclosingthetapwhichfeedsthewateranddisconnectingthehumidifierfromthemains,openthesolenoidvalveby
unscrewingthethreescrews.Removeallthecomponents,cleanthetwosmallholes(approx.1/2mmindiameter)on
the rubber membrane. Remount the solenoid valve carefully;
•  I fthishappensaftertheboilerhasbeenreplaced,checkinsidetheboilerthattheholethroughwhichthewaterisfed
has been made.
3. Whenthewaterhasbeenchanged,themachinecontinuestofeedwaterandsignal4"waterchange"stayson.Thistakes
acoupleofminutes.Themachinethenstopsfeedingwaterandbeginsproducingsteamnormally,eventhoughsignal4
remains on. This means that the water has not been changed properly.
• Checktherearenoproblemswithwaterfeeding:filtersblocked,incompletewateropening,etc...;
•  C heckthesiphondrainisnotblocked:disconnectthepower,opentheplug(10)andremoveanyobstructions.
4. Duringoperation,thehumidifiermaysignalitisoverproducing(signal5on)andawaterchangestartsup.
• CheckpotentiometerP5isintherightpositionandturnitclockwise;
• ReducethehumidistatrequestbyturningpotentiometerP2anticlockwise.
5. Duringoperation,thehumidifierfeedswaterintotheverticalsiphonhose(7).
• Reduce the humidistat request (P2) and manually empty the vertical hose.
924KTE4.01 - KT series humidifiers | 32 | 05/2021