Full Product Manual

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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
14
Figure4:ERROR CODES(continued)
Code Description Information
IO
Igniteropenerror Ifthecontrolisnotinlockoutandsensesthattheignitercircuitisopenwhenthe
blowerisrunningthecontrolwillturnofftheblowerandgointolockout.Auto-
maticrestart2minaftererroriscorrected.
SF
Thermistorerror Anexcessivetemperaturedifferencebetweenthetwothermistors(5°Formore)
oran“outofbounds”conditiononbothsensors(lessthan10°Forgreaterthan
180°F)willresultintheerrorcode.Automaticrestartis2minutesaftertheerror
iscorrected.
HS
WaterTemperature
SensingError
A)Inletwatertemperaturesensorisreportingatemperatureinexcessof104°F.
Normaloperationresumes2minutesafterinletwatertemperaturesensorreports
temperaturesof104°Forless.Thiserrorfunctionsinbothnormalandremote
thermostatmodes.
or
B)Inletwatertemperaturesensorisreportingatemperaturechangeatarate
fasterthan6°Fin60seconds,indicatingapotentiallydamaginglowwaterow
conditon.Normaloperationresumeswhentemperaturesstabilize.Ifthiscondi-
tionisdetected3timesinaonehourperiod,theheaterwilllock-outuntilthe
electricalpoweriscycledoffandbackon.
Sb
Keypadbuttonstuck
closederror
Ifoneofthekeypadbuttonsisclosed(orpressed)formorethan30stheerror
codewillbedisplayedbutthecontrolwillcontinuetofunction.Theerrorcode
willbeclearedwhentheconditioniscorrected.
IF
Ignitionfailureerror Ifthecontrolexceedsthemaximumnumberofignitionretriesorrecyclesthe
heaterwillshutdownandgointolockout.Automaticresetis60minutes.
CE
Communicationerror Ifcommunicationbetweentheignitionboardandthedisplayboardisnotestab-
lishedwithin3sofpower-upanerrorwillbedisplayed.Aftercommunicationis
established,ifitislostfor30s,theerrorwillbedisplayed.Theerrorcodewill
becleareduponavaliddataexchangebetweenboards.
LO
Limitstringopenerror Ifthelimitstringopenstheheatershutsdownandgoesintolockout.Automatic
restartis2minutesaftertheerrorconditioniscorrectedandthelimitstring
closes.Seebelowformoredetail.
EE
EEPROMERROR Anerrorwasdetectedintheignitioncontrolcircuitboard.