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LP-532 REV. 8.13.2014
LP-532 REV. 8.13.2014
Description/Part # Inlet Water Filter / 7850P-017
Check Point
(Main PCB)
N/A
Function
ThiscomponentconsistsofdurableSTS,PPSmaterialforlteringoutdebrisandheavy
metals.
Failure Event
Inputcapacityofcoldwaterisnotconstantandthermaleciencyispoor.
Eects
Noiseattheheatexchangerisgeneratedandpipesareblockedbythedebris.
Error Code
N/A
Diagonostic
CleantheColdwaterinletlter.
Color/WireNumber
N/A
Description/Part # FlowControlValve/7850P-053
Check Point
(Main PCB)
CN 14, CN 3
Function
Thecomponentdetectswaterowandregulateswaterowrateinordertosupply
stablehotwater(Morethan0.5GPM).
Failure Event
Waterowrateisnotdetectedandwaterleakageoccursaroundtheowcontrolvalve.
Eects
①Ignitionsequencedoesnotstart.
②Operationofproductisstoppedoncewaterleakageisdetected.
Error Code
Er 65
Diagonostic
①Restarttheunit
②Checktheconnectionaroundtheowcontrolvalve.
Color/WireNumber
[IWM(InletWaterModulation)]
GND(yellow):connector①
IWMSteppermotorposition(green):connector②
VDD(white):connector③
IWMSteppermotorcoilXphase(red):connector④
IWMSteppermotorcoilYphase(black):connector⑤
VDD(blue):connector⑥
IWMSteppermotorcoil/Xphase(orange):connector⑦
IWMSteppermotorcoil/Yphase(brown):connector⑧
1.PPSmaterialBody
2.Hallsensorratedvoltage
DC5~24V10mA.Max
3.OperatingFluid:
0℃~80℃(32~176℉)
4.Operatingrange:
1.2~30ℓ(0.32~8gpm)
VCC(red):connector
④
Waterowsensor(white):connector
⑤
GND(blue):connector
⑥
Inletwaterlter
Chapter 2 Components description Chapter 2 Components description