Hitachi RAF-25NH5 Instructions De Service page 238

0. Drain pump trial run switch
ODEL RAD-25NH5, RAD-35NH5, RAI-25NH5, RAI-35NH5, RAI-50NH5
¥ This switch forcibly turns the drain pump on. When the drain pump trial run switch is turned on, the timer
indicator will blink seven times, and no remote signal will be accepted.
. Float switch
ODEL RAD-25NH5, RAD-35NH5, RAI-25NH5, RAI-35NH5, RAI-50NH5
53
icro computer
¥ This is a float type switch that monitors the drain level of drain pan. The switch will be activated and will stop
operation if the drain pump is faulty or drain hose is stopped up, disabling drainage, causing the drain level to
rise abnormally.
¥ When the float switch is activated, the timer indicator will flash six times. Note that the float switch will also be
activated, disabling operation if the connector of float switch has defective contact or is connected incompletely.
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52
icro computer
C620
R539 R621
0V 0V 0V
Normally Hi (4.5V)
- 268 -
5V
R533
R534
Drain pump
trial run SW
(normally, Hi)
0V
5V
2
1
R620
CN16
FLOAT SW