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1041814, R
EV
. 00
P
AGE
6 - T
ROUBLESHOOTING
M
ILLENNIUM
S
ERVICE
& T
ECHNICAL
I
NFORMATION
SYMPTOM
CAUSE
VERIFICATION
CORRECTIVE ACTION
•
False alarms
Oxygen pressure
transducer failure
•
Inaccurate or no
pressure readings
•
Verify the
pressure tubing is
not damaged
•
Verify there are no
faulty solder joints
on the Main PCB
•
Verify there are no
component
failures on the
Main PCB
•
Replace the damaged
tubing
•
Replace the Control Main
PCB
•
Replace the Control Main
PCB
•
Pressure relief
valve activated
•
Intermittent audible
alarm
•
Red LED blinking
•
Low pressure
Cycle failure
•
Unit will cycle then
activate the pressure
relief valve
•
Unit will not complete
the cycle
•
Verify both wiring
harnesses to the
solenoid are
attached
•
Verify both wiring
harnesses have
continuity
•
Verify there are no
faulty solder joints
on the Main PCB
•
Verify there are no
component
failures on the
Main PCB
•
Reconnect the wiring
harnesses
•
Replace wire harnesses
main power
•
Replace the Main PCB
•
Replace the Main PCB
•
Inaccurate oxygen
readings
Oxygen percentage
indicator (OPI) board
failure (Model 605)
•
Oxygen percentage
inaccurate
•
Verify the OPI
board wiring
harness is
connected
•
Verify the solder
joints are not
faulty on OPI
board
•
Verify there are no
component
failures on the OPI
board
•
Verify the output
with a calibrated
oxygen analyzer
•
Measure the DC
output voltage on
Main PCB
•
Reconnect the wiring
harness
•
Replace the OPI board
•
Replace the OPI board
•
Replace the OPI board
•
Replace the Main PCB