Model IR5500
41
5.0 Troubleshooting
If equipment or qualified personnel required to troubleshoot are not available, it is
recommended that the defective unit be returned to General Monitors for repair.
CAUTION:
General Monitors’ warranty will be voided if damage results from repair
attempts other than routine replacement of recommended spare parts.
Repairs performed by persons other than General Monitors’ authorized
personnel may void the warranty. Please read the warranty statement
carefully. A defective IR5500 Infrared Open Path System should be
returned to the factory for repair even if the warranty has expired. A
complete written description of the problem should be included with all
returned equipment.
CAUTION:
Component level repair must be undertaken either by General
Monitors’ personnel, or by competent authorized service engineers.
SMT PCB repair shall only be performed at a General Monitors facility.
Failure to comply with this requirement will invalidate the warranty.
Be sure to inhibit or disconnect the external alarm wiring before making any check,
which might send the unit into alarm.
5.1 Fault Codes
The Model IR5500 Infrared Open Path System will indicate a fault code number on
the three-digit display as an aid to troubleshooting. The following list identifies the
fault codes, gives a description of the fault, and indicates the corrective action that
should be taken.
Fault
Code
Fault
Name
Fault
Code
Fault
Name
F0
Excess
Negative
Drift
F15
Receiver
Heater
F1
Close
to
Low
IR
F16
High
IR
F3
Low
IR
F18
Dirty
Lens
F4
IR
Flash
Timing
F19
Magnet
F5
Setup
Menu
F20
Low
Alignment
Signal
F6
Low
Voltage
Input
at
Receiver
F21
Zeroing
F7
Code
Checksum
F22
RAM
Checksum
F8
Fault
during
Zeroing
F23
Hardware
Revision
F9
Gas
Left
F24
Receiver
Temperature
Sensor
F10
Reset
Short
F25
Analog
Output
for
ppm
‐
m
F11
Receiver
Overheating
tF6
Low
Voltage
Input
at
Source
F12
IR
Flash
Intensity
Variation
tF7
Source
Heater
F13
NVM
Checksum
tF8
Source
Overheating
F14
Analog
Output
for
LEL
‐
m