Troubleshooting And Fault Diagnosis - Honeywell Midas-M User Manual

Troubleshooting and Fault Diagnosis

General troubleshooting guide and specific fault code table for the Midas-M gas detector.
Number Date
Simulated M
M02
fault
Baseline
M10
warning
M11 Over Range
Calibration
M20
expired
Cell expires
M21
soon
Temperature
M40
Near Limit
M41 Flow Low
LED
F01 indicator
error
Simulated F
F02
Fault
Midas-M
Fault code descriptions
Data Field Condition
User enters simulation
N/A
mode
Concentration
without Cell baseline has drifted.
Deadband
Large concentration of
gas has been detected.
Peak The Midas-M requires
concentration an independent
confirmation that the gas
hazard is gone.
The user-specified
Days until
calibration interval has
fault
elapsed.
Days until Cell is old and will expire
fault soon.
Temperature Temperature is within 5
(C) C of limit.
Midas-M is no longer
Flow (cc/min)
able to regulate the flow.
LED indicator has no
N/A
response.
User enters simulation
N/A
mode
70
Recovery
Reset simulated fault
Check for background
gas concentration,
temperature, or
humidity fluctuations.
Perform zero
calibration. Replace
cell.
Supply clean air to the
Midas-M and clear the
fault.
Perform zero and span
calibrations. Increase
span calibration
period. (zero days =
disabled)
Replace the cartridge
or the cell with a new.
Check installation
environment.
Check filters and
pump.
Replace the LCD
Reset simulated fault
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