AirSep MN134-1 B - Manual (Page 27)

MN134-1 rev B
02/14
22
6.3 Troubleshooting Chart
Problem Probable Cause Solution
Unit does not run.
Constant audio alarm with
I/0 power switch in “I” position.
No power to unit from electrical outlet.
Unit circuit breaker tripped/faulty.
Faulty electrical connections.
Faulty I /0 power switch.
Faulty circuit board.
Check/restore power to outlet.
Reset or replace circuit breaker.
Check electrical connections.
Replace I /0 power switch.
Replace circuit board.
Compressor runs and shuts
down periodically.
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 high temperature switch.
Faulty cabinet fan.
Remove obstruction.
Locate unit away from heating
source, providing adequate
ventilation on all sides. (Do not
run multiple units next to each
other).
Replace high temperature
switch.
Replace cabinet fan.
Compressor does not start.
I/0 power switch in “I” position,
intermittent alarm, and
cabinet fan turns.
Extreme cold start.
Faulty electrical connection for compressor.
Faulty capacitor.
Faulty high temperature switch.
Faulty circuit board.
Allow unit to reach room
temperature.
Check electrical connections for
compressor.
Replace capacitor.
Replace high temperature
switch.
Replace circuit board.
Compressor runs with
intermittent low pressure alarm
and low oxygen concentration.
Leak.
Reduced air intake (suction).
Weak capacitor.
Faulty circuit board.
Weak compressor.
Leak test and repair leak.
Check compressor intake path
for obstruction. Clean/remove
obstruction.
Replace capacitor.
Replace circuit board.
Replace compressor.