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Disconnect the wiring connector.
Unscrew 2 screws from the back.
When reconnecting the connector
Cold only model
Cold and Hot model
Remove the back cover.
Unscrew 3 screws.
Disassemble the FILTER ASSEMBLY.
Pull the MAIN PWB ASSEMBLY as shown.
Open the lower cover CAP by using coin and pull out
the lower cover in the arrow direction after a screw is
unscrewed.
INLET VALVE ASSEMBLY
MAIN PWB ASSEMBLY
LOWER COVER
VALVE#1 (MAIN) Whited/Black-Black
VALVE#2 (PRE) Gray/ White - Black
VALVE #1 (MAIN) Whited/Black-Black
VALVE #2 (PRE) Gray/ White - Black
VALVE #3 (HOT) Blue/Red - Black