‐CW420/430
23
tankfull reading)
Err28
Boiler heating malfunction
(overheating)
Firstcheck:
‐ boiler pressure switch has failed (continuous full
reading)
‐ pipe leaking/disconnected: water entering pipe
connected to air trap, pressure switch continues to
give full reading even with boiler empty, heating
elementoperatingdry
Or:
‐circuitboardrelayfailure,or
‐contactorfailure
8 INSTRUCTIONS FOR THE USER
8.1 Controlpanel
On‐offbutton
Programselectionbutton
StartCONFIRM/PAUSEbutton
Totalemptyingbutton(tankandboiler)
Additionalfunctionselectionbutton
L1Mainspoweronlight
L2Intake/standbycycleinprogresslight(red/green)
L3Pump‐outinprogresslight
Norinse‐aidsymbol(ifasystemformonitoringoutsidethedishwasherisprovided)
Tankheatingelementonsymbol
Nosaltsymbol(ifsoftenerisfitted)
Boilerelementonsymbol
Nodetergentsymbol(ifasystemformonitoringoutsidethedishwasherisprovided)