F47
''WATER PRE
S
SURE
SENSOR
FAULT
''
Pressure sensor cables
may
be
not mounted, or there
may be a loose contact.
Check the cables.
If cable is not
mounted, mount it.
I
f there is any
damage
,place the
cable.
R
eplace the
main
board.
F50
''
STORAGE
TANK
SENSOR
FAULT
''
Ensure that P00
=1
for HM
model.
(P00: 3,4 is used for
HST model).
NO
Boiler sensor cables may
be
not mounted, or there may
be a loose contact.
Check the cables
YES
Fix them if not
mounted, replace
them if there is any
damage.
Check whether any problem
on sensor.
(Resistance Check)
YES
Replace sensor in case
of any problem.
Replace
main
board.
NO
YES
YES
NO
NO
Replace the pressure
sensor.
39
