Nelson NW511D - Malfunctions Shown on Display (For Technician)


NW511

19
6 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR
THE TECHNICIAN)

Thewarewasherisabletoidentifyanumberofmalfunctionsandshowthemonthedisplay.
Iftheproblempersistsafterthewarewasherhasbeenswitchedoffandbackon,proceedasdescribed
below:


E.1 Boilertemperatureprobemalfunction

Boilertemperatureprobedisconnectedornot
working

E.2 Tanktemperatureprobemalfunction

Tanktemperatureprobedisconnectedornot
working

E.3 Waterintakemalfunction Waterintakenotcompletedinthemaximumtime
allowed
Checkdynamicpressureinintakesystem,clean
waterintakefilter.
Iftheproblempersists:
‐tankpressureswitchhasfailed(continuousempty
reading)
‐leakfrompipeconnectedtoairtrap
‐drainsiphonblocked‐thetankisemptydueto
siphoningwhenthedrainpumpisnotrunning
alsocontrols:
iftankandboilerpressureswitchproperly
iftherubberpipesareconnectedcorrectly
iftheairtrapisclogged/dirty
iftherinsepumprunningcorrectly


E.4 Boileroverheating. Reduceboilertemperature<80°.
Circuitboardrelayfailed,checkcircuitboardand
inspectboilerheatingelementfordamage

E.5 Tankoverheating Reduceboilertemperature<58°.
Circuitboardrelayfailed,checkcircuitboardand
inspecttankheatingelementfordamage


