Operating Instructions
97
NOTE: If the inlet / outlet tubes or filter need to be cleared, disconnect from the gas analyzer
BEFORE purging air through the tubes. If tubes remain connected, serious damage to the gas
analyzer could occur.
Code 69
Gas Analyzer Calibration
(Normal)
1. Stale atmosphere / Filter or inlet /
outlet tubes restricted (SEE NOTE
BELOW)
1. Open evaporator access door or
fully open vent door and allow unit
to operate on high speed fan for
20 to 30 minutes to purge any old,
stale air trapped in the analyzer
module
2. CO2 or O2 sensor faulty
2. Replace analyzer
Code 69
Gas Analyzer Calibration
(During PTI)
1. Stale atmosphere / Filter or inlet /
outlet tubes restricted (SEE NOTE
BELOW)
1. Open evaporator access door or
fully open vent door and allow unit
to operate on high speed fan for
20 to 30 minutes to purge any old,
stale air trapped in the analyzer
module before performing PTI
2. CO2 or O2 sensor faulty
2. Replace analyzer
Code 122
O2 Sensor Calibration Error (if
equipped) (PTI Only)
1. Stale atmosphere / Filter or inlet /
outlet tubes restricted (SEE NOTE
BELOW)
2. O2 sensor reading < 17% or >
25%
1. Open evaporator access door or
fully open vent door and allow unit
to operate on high speed fan for
20 to 30 minutes to purge any old,
stale air trapped in the analyzer
module before performing PTI
2. If O2 reading is still out of
calibration range after purge
procedure noted above is
performed, replace analyzer
Alarms
Possible Cause
Corrective Action(s)
Data Menu
Display Indication
Corrective Action(s)
CO2%
Open or Short
If no alarm has been generated, the
system most likely has not
communicated with or is verifying
communications with the analyzer.
Follow action for ‘Stale Atmosphere’
steps noted above. If fault exists, an
alarm will be generated.
O2%
Open or Short
If no alarm has been generated, the
system most likely has not
communicated with or is verifying
communications with the analyzer.
Follow action for ‘Stale Atmosphere’
steps noted above. If fault exists, an
alarm will be generated.
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Страница 19: ...Service Guide 18...
Страница 28: ...Specifications 27 Figure 2 Physical Specifications AMA313...
Страница 41: ...Unit Description Features Options 40...
Страница 105: ...Operating Instructions 104...
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Страница 189: ...Wiring and Schematic Diagrams Index 188...
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Страница 191: ...190 Wiring Diagram Page 1 of 2...
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