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Page41
Version1.0Aug2018
Problem PossibleCauses Solution
Watertemperatureistoohot.
1. Water heater temperature
settingistoohigh.
1. Lower the water heater
temperaturesetting.
2. Water service valve is not
completelyopened.
2. Check and open completely
thewaterservicevalve.
3. Wateroutletflowistoolow. 3. Increasethewateroutlet
flowrate.
4. Strainerisblocked. 4. Cleanstrainer.
Fan continues to operate after water
outletisoff.
The post purge cycle is clearing
fluegas.
Normaloperation.
ONSENwaterheaterhasabuilt‐inelectronicdiagnosticsystem.Whenanerroroccurs,theremotecontrolwillshow
theerrorcode.Refertotheerrorcodesfoundbelowandpossiblefaultsforfurtherinformation.
Whenanerrorcodeisshown,turnOFFallhotwateroutlets.TurnOFFthewaterheaterbypressingPowerON/OFF
ontheremotecontrol.Waitforabout5minutes,thenrestartthewaterheateragainbypressingPowerON/OFFon
theremotecontrol.Turnonahotwateroutletandrecheckthedisplaytodetermineifthereisstillanerror.
Iferrorstillexists,turnoffthehotwateroutletandwaterheater.Unplugthepowersupply,waitfor30secondsand
reconnectit.Restartthehotwaterheaterandturnonahotwateroutlettocheckagain.
Ifthereisstillerrorshowninthedisplay,takeanoteofthedisplayederrorandturnOFFthewaterheater.Contact
authorisedservicecentreforservicing.
ErrorCode
Faults
01 Watersupplytemperaturecircuit
10 Flamedetectionmalfunction
11 Ignitionfailure
12 Unexpectedflameout
13 Thermostatcircuiterror
30 Fluepressuresignalinitialdetectionfailure
31 Fluepressurepretestmalfunction
32 Flueblockageerror
34 Pretestmalfuctionforfanblockage
35 Fanblockageerror
Figure 48
Figure 49
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