Coway CHP-671R/L - Page 43

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