LG RCWFH Series Instruction Manual page 132

132
Even if the inspection was carried out as above, if the cause couldn't be found, connect current generator to the
input connector(DC24V and (+)) of the controller and check if the indicator value changes according to the change of
the current.
In such case, if the controller indicator value does not change according to the change of the current, it shall be de-
cided as controller defect.
(+)
DC24V
Controller board
Figure 97. Current loop measurement circuit
(+)
DC24V
Controller board
Figure 98. Controller voltage measurement circuit
Pressure sensor
(-)
(+)
(+)
- Place at DC 30V
- The measurement shall
be within DC 22V±5%
(-)
(+)
(-)