Daitsu FMCD*ECM series - LED Indication and Error Description

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SK2014‐SON‐002‐TechMnl‐FMCD‐003
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C.2.1. LEDIndicationandErrorDescription
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Forallunits‐OperationLEDlight(Green)
ErrorDescription Blink Reason Remedy
Electricalheaterfailure
GreenLEDblinks1times,
stopsfor3s
OnlyforunitwithEH.
EHsafetyswitchis
open.
1. Changefanspeedtohigh.
2. ReplacethedamagedEHsafety
switch.
Indoorcoilsensor2failure
GreenLEDblinks2times,
stopsfor3s
Ti2sensorunpluggedor
damaged.
1. CheckifTi2plugisconnectedornot.
2. Checkifsensor’sresistanceiscorrect
ornot.
Returnairsensorfailure
GreenLEDblinks3times,
stopsfor3s
Roomsensorunplugged
ordamaged.
1. CheckifTrplugisconnectedornot.
2. Checkifsensor’sresistanceiscorrect
ornot.
Indoorcoilsensor1failure
GreenLEDblinks4times,
stopsfor3s
Ti1sensorunpluggedor
damaged.
1. CheckifTi1plugisconnectedornot.
2. Checkifsensor’sresistanceiscorrect
ornot.
Indoorcoillowtemperature
protection
GreenLEDblinks5times,
stopsfor3s
Watertemperatureis
lowerthan3ºC.
Checkthewatertemperature.
Indoorcoiloverheat
protection
GreenLEDblinks6times,
stopsfor3s
Watertemperatureis
higherthan70ºC.
Checkthewatertemperature
ECmotorfailure
GreenLEDblinks9times,
stopsfor3s
NoECmotorfeedback
1. CheckDIPB‐SW5andSW6setting.
2. ChecktheECmotor.
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