Detecting the water level
1. Detecting low/high water level
Water level sensor status Status Operation
OPEN OPEN
Low water level
(no water)
Water purifying operation
SHORT
OPEN Middle water level
Water purifying of full water
level operation
SHORT SHORT
Full water level Full water level operation
OPEN SHORT Error
Low water level or full water
level sensor is faulty.
(Only the step 3 indicators of
the hot water and cold water
flash.)
→
Low water level sensor-OPEN/full water level
sensor-OPEN
Low water
level
Water purifying
operation
→
Low water level sensor-SHORT/full water level
sensor-OPEN
Middle water
level
Water purifying
operation
→
Low water level sensor-SHORT/full water level
sensor-SHORT
Full water
level
Full water level
operation
→
Low water level sensor-SHORT/full water level
sensor-OPEN
Middle water
level
Full water level
operation
→
Low water level sensor-SHORT/full water level
sensor-OPEN
Low water
level
(Repeat) water
purifying operation
OR
Low water level sensor-SHORT/full water level
sensor-OPEN continues for 15 minutes or
longer
Middle water
level
(Repeat) water
purifying operation
2. Valve operation
1) Water purifying operation
- Feed water shut-off, feed valve power ON, NOS valve poer OFF.
2) Full water level operation
- Feed water shut-off, feed valve power OFF, NOS valve poer OFF.
3) Low water level or full water level sensor is faulty
- Feed water shut-off, feed valve power OFF, NOS valve poer OFF.
4) When sensing water overflow
- Feed valve OFF, NOS valve ON. (See ‘Water overflow sensing operation’)
3. Low/full water level sensing and delay time
1) When OPEN or SHORT is inputted for 3 seconds or more, the normal value is recognized and the
operation starts.
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