Heat Controller SMA - Page 43

Operation Timer Defrost auto Outdoor
LED LED LED LED
LED(RED)
XXX
XXX
XX X
XX
XX
XXX
XXX
OFF
XXX
Flash at 5Hz X OFF
SMA‐SMH‐18‐24SA
AUTOTIMERPRE‐DEF.OPERATIO
N
Flashes
5 CommunicationFailure
2 CondensorTemperatureSensor
1 OtherIndoorFailure
SMA‐SMH18‐24SB
SMA/SMH18‐24DIAGNOSTICS
Indoor unit communication error
EEROM error
outdoor unit protects (outdoor temp thermister,phase order ect.)
(without for cooling only models)
Outdoor condenser temperature thermister is open or shorted
Indoor evaporator thermister is open or shorted
Indoor room thermister is open or shorted
over current protection of the compressor occurs 4 times
FailureMode
OutdoorUnitDiagnostic
Outdoor led should be solid RED for normal operation
no voltage outdoor transformer
UNPLUGGED(S)WIRE(LOCKOUT3‐5MINUTES
)
AUTOPRE‐DEF.OPERATIONTIMER
OVERCURRENT‐CHECKVOLTAGE‐LOWVOLTAGE‐HIGHAMP
S
VOLTAGESHOULDBEBETWEEN175‐253VOLT
S
OUTDOORUNITPROTECTS‐CHECKPOWERSUPPL
Y
COULDBETHEOUTDOORPCBORTHECOMPRESSORONLOCKEDROTOR
COMMUNICATIONERROR‐L1&2NREVERSED fromtheindoortotheoutdoo
r
AUTO(GREENLED)FLASHESATTHEEVAP.&(RED LED)FLASHESFIVE
TIMESINTHEOUTDOORUNIT.ITTAKES2‐3MINUTESFORTHE
UNITTOREACTANDSTARTFLASHING
WHENTHEPOWERISAPPLIEDTOTHEOUTDOORUNITTHERED LED
TURNSSOLIDREDIFTHE(S)WIREISDISCONECTED
ORANYFAULTSWITHTHE
EVAPORATORTHEREDLEDFROMTHEOUTDOORUNITFLASHESFIVETIMES
OUTDOORUNITTRANSFORMERVOLTAGE230TO12VA
C
VOLTAGEFROM2(N)TO(S)TOTHEEVAPORATOR12VOLTD
C
NO12VOLTAGEFROMTHETRANSFORMER2(N)TO(S)YOUGET32VD
C
FROM2(N)TO(S)ANDTHEAUTOGREENLEDFLASHESAFTER2‐3MINITE
S
THEOUTPUTVOLTAGEWILLVARYDEPENDINGONTHEINCOMINGVOLTAGE
8.8.