Troubleshooting Chart - AirSep visionaire Service Manual

5.3 Troubleshooting Chart

Problem
Unit does not run.
I/0 power switch in "I" position.
Compressor runs with intermittent
alarm. Oxygen concentration at max
flow rate is within specifications.
Compressor runs and shuts down
periodically. Only start up alarm
activates
Compressor runs and shuts down
periodically with 5-beep intermittent
high temperature alarm.
Compressor runs with 3-beep
intermittent low pressure alarm
and low oxygen concentration.
Compressor does not start. I/0
power switch in "I" position,
intermittent 3-beep low pressure
alarm, and cabinet fan turns.
4-beep high pressure alarm is
activated and both compressor
and valves do not operate.
Probable Cause

No power to unit.

Unit circuit breaker tripped/faulty

Faulty electrical connections.

Faulty circuit board.

Faulty I/0 power switch.
 Faulty pressure transducer.
 Faulty oxygen monitor circuit board.

Restricted air flow.

Unit overheating due to improper
location. Compressor thermally cut off
due to excessive heat. NOTE: It will
not restart until it cools down.

Faulty cabinet fan.

Temperature probe wire harness faulty
or disconnected from circuit board.

Leak

Reduced air intake

Weak compressor

Faulty circuit board.

Extreme cold start.

Faulty electrical connection for
compressor.

Faulty capacitor.

Faulty circuit board.

Restriction in exhaust muffler.

Contaminated sieve beds.

Faulty solenoid valve.

Faulty circuit board.
28
Solution

Check wall outlet for power.

Reset or replace circuit breaker.

Check electrical connections.

Replace circuit board.

Replace I/0 power switch.
 Replace circuit board.
 Replace oxygen monitor circuit board.

Remove obstruction.

Locate unit away from heating source,
providing adequate ventilation on all
sides.

Do not operate more than one unit
side by side.

Replace cabinet fan.

Replace or reconnect temperature
probe.

Leak test and repair leak.

Check compressor intake path for
obstruction. Clean/remove
obstruction.

Replace compressor.

.
Replace circuit board

Allow unit to reach room
temperature.

Check electrical connections for
compressor.

Replace capacitor.

Replace circuit board

Replace exhaust muffler.

Replace sieve beds.

Replace solenoid valve manifold.

Replace circuit board.
MN138-1 Rev J