Coway CHP-671R/L, Руководство по обслуживанию, Страница: 48 / 74

Fault diagnosis
4-16 Coway co., Ltd
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Water level display function (capacitance water level detection equipment)
Function Explanation
1.
Types of water
level detection
sensors
• Low water level/medium water level/full water level/water overflow detection
sensor: capacitance IC used (Chemtronics)
2.
Sensor
detection
conditions
• If the water level sensor input is maintained equivalently for 3 seconds [1 second in
test mode], normal operation is detected
• If the water overflow sensor is maintained for 20 seconds or more, water overflow
is detected
3.
Display
operation
• Water overflow detection status
: Water sensor FND (L1, L2, L3) 0.5 second ON/OFF periodic flashing.
• Water level sensor malfunction
- Low water malfunction: Low water FND (L1) 0.5 second ON/OFF periodic
flashing. L2, L3 FND are off.
- Medium water malfunction: Medium water FND (L2) 0.5 second ON/OFF
periodic flashing. L1, L3 FND are off.
- Full water malfunction: Full water FND (L3) 0.5 second ON/OFF periodic
flashing. L1, L2 FND are off.
- Dual water level error: (Low water/medium water/full water) error + water
overflow error, low water + medium water FND (L1 + L2)
0.5 second ON/OFF periodic flashing. L3 FND is off.
- If water overflow is detected 3 times or more, an overflow-related error is
indicated on the display and the related valve stops operating.