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6. Diagnostics
Fault
Description
Code
m9
Simulated Maintenance Fault
m10
Over range.
m11
User calibration expired
m12
Cartridge expires soon.
m13
Flow low.
m14
Interferent present.
m15
Temperature near limit.
m16
Baseline fault.
m17
Inhibit timeout.
F39
Simulated Fault
F40
Sensor overdosed.
F41
Baseline fault.
F42
Calibration expired.
F43
Cartridge expired.
F44
Cell failure.
F45
Stabilization timeout.
F46
Cartridge analog failure.
F47
Cartridge memory invalid.
F48
Cartridge absent.
F49
Cartridge wrong type.
F80
Temperature limits exceeded.
F81
Flow fail.
F82
Excessive electrical noise.
F83
Pyrolyzer fail.
F84
Misc. transmitter fault.
F86
Coprocessor fail
Pyrolyzer temp limits
F87
exceeded
Condition
User has generated a simulated fault.
A large concentration has been detected.
The Midas
requires an independent confirmation that
®
the gas hazard is gone.
The user specified calibration interval has elapsed.
Cartridge is old and will expire soon.
Midas
is no longer able to regulate flow.
®
An interferent is degrading the ability of the Midas
to detect gas.
Temperature within 2° Celsius of limit.
Sensor baseline has drifted.
Transmitter has been in inhibit mode too long.
User has generated a simulated fault.
Sensor has been exposed to high gas concentrations
for long periods.
Sensor baseline has drifted.
Too long since last calibration.
Cartridge is too old.
Cartridge has failed Reflex™ check.
Cartridge has failed to stabilize.
Electronic Failure
Gas concentration greater than full scale.
Checksum error.
No communications.
Cartridge type found to be incorrect after boot-up.
Temperature is outside limits
Flow < 70% of nominal for 15 seconds.
Internal electronics repeatedly noisy.
Pyrolyzer fails to heat.
Transmitter is defective.
Coprocessor is damaged.
Pyrolyzer temperature exceeded.
Reset simulated fault.
Supply known clean air to the Midas
Perform zero and span calibrations. Increase span calibration period.
Replace the cartridge with a new cartridge.
Check filters and pump.
®
Check application.
Check installation environment.
Check for background gas concentration, temperature or humidity
fluctuations.
Perform zero calibration.
Replace cartridge.
Resume monitoring or increase timeout value.
Reset simulated fault.
Replace cartridge.
Check for background gas concentration, temperature or humidity
fluctuations.
Perform zero calibration.
Replace cartridge
Replace or calibrate the cartridge.
Replace cartridge.
Replace cartridge.
If temperature or humidity shocks exist, precondition the cartridge.
Check for background gas concentration.
Replace cartridge.
Replace cartridge.
Replace cartridge.
Reseat cartridge.
Replace cartridge.
Replace cartridge or press '✓' accept if correct.
Check installation environment.
Check filters.
Check for kinked tubing.
Replace pump.
Check grounding of Midas
Check termination of cable shields.
Relocate the Midas
further from noise sources.
®
Add ferrite inductors to cables.
Check electrical connection to pyrolyzer.
Replace pyrolyzer.
Service or replace Midas
Contact Honeywell Analytics Service.
Clean pyrolyzer cooling vents.
Contact Honeywell Analytics Service.
10
Recovery
and clear this fault.
®
chassis.
®
.
®
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