Hayward H400FD User Manual

Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
13
Figure4:ERROR CODES
ERROR CODES:
Figure4liststheerrorcodesthatmaybedisplayedontheheaterdisplayboard.
Contactaqualiedservicecompanyforassistance.
Code Description Information
bD
Internalfault/power-up
error
Oninitialtrialforignition.Automaticresetisimmediateoncethegasvalverelay
checkresultsareacceptable.
bD
Gasvalvesensed
as“ON”error
Ifvalveisopenwhenitshouldbeclosedtheheaterwillshutdownandgointo
lockout.Blowerwilloperateuntilerrorconditioniscorrected.Automaticrestart
2minutesaftererroriscorrected.
bD
Gasvalvesensed
as“OFF”error
Ifvalveisclosedbutameissensedtheblowerwillrunfor5sthenstartanew
ignitionsequence.Iferroroccurs10timesduringacallforheatthecontrolwill
gointolockout.Automaticresetis60minutes.
bD Dataretrievalerror Ifcontrolinputdataiscorruptedtheheaterwillshutdownandgointolockout.
HF
Flamepresentwithgas
valve“OFF”error
Ifameissensedwiththegasvalveoffthecontrolwillgointolockout.The
blowerwillrununtilerrorconditioniscorrected.Whencorrected,controlwill
runblowerfor5sthenautomaticallyrestartafter2minutes.
PF
Electricalsupplywiring
error
Thiscodewilldisplayif120Vpolarityisreversed,lowvoltageisdetected,orif
thegroundpathisnotsufcient.Resetisimmediateaftererroriscorrected.
AO
Blowervacuumswitch
openerror
Iftheblowerproverswitchdoesnotcloseaftertheblowerstartsthecontrolwill
stoptheignitiontrialgointolockout.Theblowerwillcontinuetorun.Automatic
resetisimmediateaftertheswitchcloses.
AO
Blowervacuumswitch
openwhenexpected
closederror
Iftheblowerproverswitchopensunexpectedlyduringoperationthecontrolwill
shutdownandattempttore-light.Iftheswitchdoesnotcloseaftertheblower
startsthecontrolwillgointolockoutwiththeblowerrunning.Automaticresetis
immediateaftererroriscorrected.
AO
Blowervacuumswitch
openduringpost-purge
error
Iftheblowerproverswitchopensduringthepostpurgecycle(heaterisnotr-
ing)thecontrolwilldisplaytheerrorcode.Thepost-purgecyclewillbecom-
pletedoncetheblowerproverswitchcloses.
AC
Blowervacuumswitch
closedwhenexpected
openerror
Iftheblowerproverswitchisclosedbeforeblowerstart-upthecontrolwillnot
starttheblower.Automaticresetisimmediatewhentheswitchopens.

Hayward H400FD Specifications

General

Heating Capacity	400, 000 BTU
Fuel Type	Natural Gas or Propane
Heat Exchanger Material	Cupro Nickel
Ignition System	Electronic
Warranty	1 year