User manual

AN310-EU-EN V1.2 1/13
11
ErrorMessages
Errorcodesandsolutions

AirTemperature

E02:Temperaturereadingislowerthanthelowrangelimit.Placethemeterinroom
temperaturefor30minutes.IfE02continues,sendtheunittoExtechforrepair.
E03:Temperatureexceedsthehighrangelimit.Placethemeterinroomtemperaturefor30
minutes.IfE03continuestoappear,sendtheunittoExtechforrepair.
E31:TheA‐to‐Dconverterrequiresreplacing.SendthemetertoExtechInstrumentsforrepair.

RelativeHumidity(RH)
E04:Temperatureerrorcorruptedthehumidityreading.Checkthetemperatureerrorsolution
section.
E11:RHcalibrationerror.SendtoExtechInstrumentsforrepair.
E33:RHmeasurementcircuiterror.SendtoExtechInstrumentsforrepair.

DewPoint(DP)andWetBulb(WBT)Temperature
E04:TemperatureorRHerror.ChecktemperatureorRHerrorsolutions.

Airvelocity

E03:Velocityexceedsthehighrangelimit.Testthemeterusinganairvelocitythatisknown
tobewithinthespecifiedrangelimits.SendtheunittoExtechforrepairiftheE03error
messagepersists.

Airvolume

E03:Readingexceedsthemeter’sdisplaylimit.CheckthattheAREAsettingiscorrectinthe
SetupMode.
E04:Airvelocityerror.ReturnmetertoExtechforrepair.

OtherErrors

E32:MemoryICerror.Rebootthemeterandcheckitagain;sendittoExtechInstrumentsfor
repairiftheerrormessagepersists.

Nodisplay
1. Checkthatthebatteriesaremakinggoodcontactandarealignedforcorrectpolarity.
2. Replacebatteries.

DisplayswitchesOFFautomatically
Thissymptomcouldbethenormal‘SleepMode’whichswitchesthemeterOFFafter20
minutesofin‐activity.Ifthisisnotthe‘SleepMode’,checkwhetherthelowbatteryindicator
appearsbeforetheLCDattemptstoswitchON;ifyes,replacethebatteries.