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Model9060ZManual
46
4.‘Probe2HighImpedance’
Oxygen probe or electrode failure. The sensor has a high impedance measurement. Replace the
probe.Thisalarmisinhibitedwhentheprobesarelessthan650°C(1200°F).
5.‘Probe1TCOpenCircuit’
6.‘Probe2TCOpenCircuit’
Probethermocoupleisopencircuit.Theheaterinheatedprobeswillswitchoff.
7.‘AuxTCOpenCircuit’
TheAUXthermocoupleisopencircuit.Ifthethermocoupleisnotneeded,select“Disabled”in
COMMISSIONINGmenufunction#9,“AuxTCType”orplaceashortcircuitbetweenterminals7&8.
8.‘RefAirPumpFail’
The reference air pump in the transmitter ha
s been either unplugged or has gone open circuit
(<20mA).Replacethereferenceairpump.
9.‘RefAirPumpOverload
The reference air pump in the transmitter has stalled and is drawing in excess of 300mA. The
transmitter will attempt to restart the pump every minute for 1secon
d. Replace the reference air
pump.
10.‘ADCCalibrationFail’
Theanaloguetodigitalconverterhasbeenfoundtofalloutsidethenormalcalibrationspecifications.
Inthiscasetheprobeheaterwillautomaticallybeturnedoff.
11.‘AlarmLogFail’
ThealarmhistoryiskeptinanEEROM.Thisalarmwillberaisedifthismemorydevicefails.
12.‘Output1Failure’
13.‘Output2Failure’
The digital to analogue and voltage isolator circuit has been found to fall outside the normal
calibrationspecifications.Thischeckisonlyperformedwhenthe‘AUTOCAL’buttonispressed.See
chapter10.1.2.
14.‘Heater1SSRFailure’
15.‘Heater2SSRFailure’
One of the heater power control devices (SS
R) has been found to have failed. See chapter 8.2.8,
HeaterSSRfaultcorrection.
16.‘HeaterSSRLeakage’
One of the heater power control devices (SSR) has been found to have failed but the transmitter
cannotdeterminewhichone(s)hasfailed.
17.‘Probe1FilterBlocked’
18.‘Probe2FilterBlocked’
Blockedprobefilter.Thistestisonlyperformedwhenautomaticpurgingoftheprobeisselected.See
chapter11.Thisalarmwillnotresetuntilthenextpurgecycle.Thecyclecanbeinit
iatedmanuallyor
automatically.