Coway CHP-671R/L, Руководство по обслуживанию, Страница: 43 / 74

Fault diagnosis
Coway co., Ltd 4-11
Function Explanation
2.
Hot water
temperature
sensor error
display feature
• Hot water temperature sensor OPEN
- FND's H3 flashes in cycles of 1 second ON / 1 second OFF H1/H2 stay off.
- Heater output is OFF.
• Hot water temperature sensor short
- FND's H3 flashes in cycles of 1 second ON / 1 second OFF H1/H2 stay off.
- Heater output is OFF.
• During hot water temperature sensor open or short, the associated action occurs
after a 1 second delay.
• If the hot water temperature sensor is operating normally, the FND display and
heater operate according to hot water temperature.
• Hot water temperature sensor overheating function
- If the hot water sensor reaches 99 °C or more, the heater is cut off and
H1/H2/H3 flash on the display.
3.
Compressor,
heater
differential
control function
• If the compressor and heater operate at the same time, they must operate at
1 second intervals.
4.
Other
• Hot water temperature thermistor model: MMT-0.4B
• Thermistor temperature detection error range: ± 0.5 °C or less
• The hot water temperature sensing circuit's partial pressure resistance is D grade
(0.5 %).
• The hot water temperature is checked 100 times and, if it is within a set range at
those 100 times, the temperature is detected as normal.
• Hot water temperature detection range: 1.2 MΩ ~ 13 kΩ