24
12.0 TROUBLESHOOTINGGUIDE
MAINTENANCE&TROUBLESHOOTINGCODE
PROBLEM CAUSE WHATTODO
Digitalcontroldisplays
CODE:FLO
Thewaterflowinsidetheheatpumpis
insufficient
Thereisnowatercirculationinsidethe
heatpump
Theflowswitchisdefective
Checkthatthecirculatingpumpisworking;
Checkthatthebypassvalvesareproperly
positioned;
Checktheskimmer(noblockage);
Checkthewaterpressuregaugeoftheheat
pump,itshouldreadbetween10and15
psi.
Digitalcontroldisplays
CODE:FL3
Theheatpumpflowswitchhascutoff
three(3)timesinthesamehourforone
ofthereasonsabove
Theheatpumpwillnotre‐startafteroneof
theprotectiondevicesshutsitdownfor
thethirdtimeinthesamehour;
Closethecircuitbreakertoresettheheat
pump.
Digitalcontroldisplays
CODEFS
Theheatpumpisinde‐icingmode Waituntiltheendofthede‐icingcycle.The
heatpumpwillrestartautomatically
Digitalcontroldisplays
CODE:LP
Ventilationontheevaporatoris
insufficient.
Thefandoesnotwork
Freonleak
Theoutsidetemperatureisverylow
Checkthattheevaporatorisnotblockedby
pollen,grass,leaves;seetheuser’smanual
forsafetyandmaintenancetips
Besurethereisenoughfreespacearound
theheatpump(seetheInstallationGuide)
CheckthatthefanispoweredON
Digitalcontroldisplays
CODE:LP3
Theheatpumplowpressureswitchhas
cutoffthree(3)timesinthesamehour
foroneofthereasonsabove
Theheatpumpwillnotre‐startafteroneof
theprotectiondevicesshutsitdownfor
thethirdtimeinthesamehour
Closethecircuitbreakertoresettheheat
pump
Digitalcontroldisplays
CODE:HP
Thewaterflowinsidetheheatpumpis
insufficient
Thebypassvalveisinthewrongposition
Thewaterexitisblocked.
Thereisablockageintherefrigeration
circuit(pipingblocked)
Checkwhetherthereisadequatewater
circulationinside
Checkthatthebypassvalvesareproperly
positioned
Checkwhetheranythingisblockingthe
waterhose
Digitalcontroldisplays
CODE:HP3
Theheatpumphighpressureswitchhas
cutoffthree(3)timesinthesamehour
foroneofthereasonsabove
Theheatpumpwillnotre‐startafteroneof
theprotectiondevicesshutsitdownfor
thethirdtimeinthesamehour
Closethecircuitbreakertoresettheheat
pump
Digitalcontroldisplays
CODESPI
Thedigitalcontrolisdefective Closethebreakerswitchandre‐openit.If
theproblemisnotresolved,thedigital
controlwillhavetobechanged.Inthis
case,callyourdealer