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User Manual - Page 4

For 110423-2.

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Trouble Shooting Guide
TheguidebelowisintendedtoaidanInstallerorServiceTechnicianinresolvingsimpleproblems.
CAUTION: To prevent electrical shock and/or damage to the equipment, disconnect electrical power to the system at the main fuse or
circuit breaker before opening the appliance control box, and leave disconnected until after the lid has been shut and secured.
CAUTION: Any testing performed on live conductors must be carried out by qualied personnel only.
Observation Possible Cause Remedial Action
Coolerdoesnot
work/NoLCD
displayonthe
WallControl
Incorrectconnectionofwiring
betweenWallControlandAppliance
ControlBoard
CheckthecorrectconnectionofthethreewiresattheApplianceControlBoard
andWallControl.Ensurethecorrectwiringorderatbothends,andthatthe
terminalsarecorrectlyttedandsecured
PowerSupplyCircuitBreakerOffor
ApplianceControlBoxnotconnected
tothePowerSupply.
ChecktheconditionofPowerSupplyCircuitBreaker.Verifythatthecircuit
BreakerSwitchisOn.
SupplyVoltageshouldbepresentbetweenSupplyL1andSupplyNterminals
ontheApplianceControlBoard.
BlownFuseintheApplianceControl
Box.
ChecktheconditionofFuselocatedontheApplianceControlBoard.Check
forincorrectwiring.Replaceblownfusewiththecorrecttype.
ApplianceControlBoardorWall
Controlfaulty.
SwitchonthePowersupplytotheApplianceControlBox.
MeasuretheDCVoltageattheWallControlbetweentheBlackandRedtermi-
nalswiththeWallControlstillconnected.Ifthemeasuredvoltageisgreater
than3.0VDCandtheLCDremainsblank,theWallControlisatfault.
Ifthevoltageislessthan3.0VDC,disconnecttheredwireandmeasurethe
voltagebetweentheblackandredwire.Ifthemeasuredvoltagerisesto
3.0VDC,theWallControlisfaulty.Ifthemeasuredvoltageremainslow,the
ApplianceControlBoardisatfault.
Water/Purge
Pumpdoesnot
work.LCDon
WallControl
indicatesitis
on.(*)
PoorconnectionofWaterPumptermi-
nalsontheApplianceControlBoard.
VerifythatWaterPumpleadsarecorrectlyconnectedtotheWaterPumpcon-
nectionscrewterminalsontheApplianceControlBoard.
Incorrectconnectionofwiring
betweenWallControlandAppliance
ControlBoard.
VerifythatcolorsofthermostatcablematchthecolordescriptiononAppliance
ControlBoard.Checkthatallwiresarermandsecure.
FanMotor
doesnotwork
/NoFanHigh
and/orFanLow
operation(*)
Pre-Wetcycleisactive CheckLCDdisplayforashingPre-Wetindicatingthefanisturnedoffuntil
pre-wetcycleiscomplete.
PoorconnectiontoFanMotortermi-
nalsontheApplianceControlBoard.
VerifythatFanMotorleadsarecorrectlyconnectedtotheFanHi,FanLo,and
NconnectionscrewterminalsontheApplianceControlBoard.
Incorrectconnectionofwiring
betweenWallControlandAppliance
ControlBoard.
VerifythatcolorsofthermostatcablematchthecolordescriptiononAppliance
ControlBoard.Checkthatallwiresarermandsecure.
PoorconnectionbetweenLinkand
Nlink
Verifythatthejumperwireacross“Link”and“Nlink”isconnectedproperly.
Warning: Use the jumper wire only when fan and pump voltages are
the same.
*Appliance
ControlBoard
DiagnosticTest
TheControlBoardcontainsdiagnosticbuttonsintheupperleftrecessedsection.Followtheinstructionsofthelabello-
catedontheinsideboxcovertodiagnosethedifferentfunctionsoftheboard.Pressingthebuttonswilltesteachfunction
oftheboard.IfallLED’slightduringthetest,thecontrolboardisworkingproperly.Ifnotthecontrolboardisfaulty.