Emerson Rosemount Oxymitter 4000 Reference Manual page 111

July 2018
Figure 8-8. Fault 6, High High Heater Temp
LOI
When Fault 6 is detected, the LOI displays the "Very Hi O
1.
2.
3.
4.
Troubleshooting
The very high O temperature alarm will activate when the thermocouple
2
produces a voltage of 37.1 mV [900°C (1652°F)].
The triac and the temperature control may be at fault.
Remove power. Allow the Oxymitter 4000 to cool for five minutes. Restore power.
If the condition repeats, replace the electronic assembly per "Electronic Assembly
Replacement" in Section 9: Maintenance and Service.
Restore power.
4. If the condition repeats, repla
Rosemount Oxymitter 4000
LOI
When Fault 6 is detected, the LO
"Very Hi O2 Temp" message.
1. The very high O2 temperatur
activate when the thermocou
a voltage of 37.1 mV [900¡C (
2. The triac and the temperature
fault.
3. Remove power. Allow the Ox
to cool for five minutes. Resto
4. If the condition repeats, repla
electronic assembly per "Elec
Assembly Replacement" in S
Maintenance and Service.
Temp" message.
2
Oxymitter 4000 to cool for fi
assembly per "Electronic
Assembly Replacement" in S
Maintenance and Service.
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