11-3
Fault
code
Description Condition Recovery
F83
Pyrolyzer fail. Pyrolyzer fails to heat. Check electrical connection to pyrolyzer. Replace pyrolyzer. (also see Section
4.3)
F84
Misc. transmitter fault. Transmitter is defective. Service or replace Midas
®
.
F86
Coprocessor fail Coprocessor is damaged. Contact Honeywell Analytics Service.
F87
Pyrolyzer temp limits
exceeded
Pyrolyzer temperature exceeded. Clean pyrolyzer cooling vents. Contact Honeywell Analytics Service.
F88
Pyrolyzer heater fail Pyrolyzer heater failed. Contact Honeywell Analytics Service. Replace the pyrolyzer.
F89
Pyrolyzer power unreg Target power not achieved within specified time
span.
Check the 24 volt power supply. If it is not 24 VDC ±2.4, contact Honeywell
Analytics Service. Replace pyrolyzer.
F90
Pyrolyzer heater mismatch Different pyrolyzer type required Contact Honeywell Analytics Service.
F91
HTP module required Check that MIDAS-S-CFX or MIDAS-E-CFX is
installed for the high temperature pyrolyzer
version
Change to HT Pyrolyzer
F92
NP1/0P3 pyrolyzer module
failure
Data value: 0x0800
NP1/0P3 pyrolyzer failed to get up to temperature
Replace pyrolyzer heater (only for the 0P3 pyrolyzer)
Data value: 0x1000
NP1/0P3 pyrolyzer flow is out-of-range
Check flow connections between Midas and NP1/0P3 pyrolyzer
Data value: others
NP1/0P3 pyrolyzer internal failure
Contact Honeywell Analytics Service.
“Hot” and “Cool” messages are informational events that can be generated under two conditions:
1. Immediately after the detector powers up.
2. When the state changes from cool to hot or hot to cool.
“Hot” means the temperature inside the cartridge is at 40°C or above. “Cool” means the temperature
inside the cartridge is below 40°C. In both cases the event data field will list the actual temperature at
the time of the event.
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