
11-25
CONTROL SYSTEM
Revision Y06-02Service Manual - KN Series
11.12.2 Condensation Pump.
Mode: Cool, Dry, Auto
Temp: Selected desired tem perature
Fan: Any
Timer: Any
I FEEL: Any
Control function:
Prevent Condensed water from Overflowing.
ON
OFF
ON
COMP
(WVL)
PUMP
OFF
ON
OPER
LED
OFF
Overflow
Water Level
Normal
BLINK
COMP/WVL is
forced OFF
8 min 8 min
Overflow when
unit is ON
Overflow when
unit is OFF
1 min
Notes:
1. The switch used for w ater level detection is closed under norm al condition, and is open
when water overflow.
2. For the NEC version of MCU, the "Over Flow" & “Normal” condition are indicated by
logic “0” & “1” at the LEVEL4 input pin respectively.
3. For the Fujitsu version of MCU, the "Over Flow" & “Normal” condition are indicated by
logic “1” & “0” at the LEVEL4 input pin respectively.
4. The “Overflow ” condition can activate the water pump in SB and operating modes.
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