Invacare microAIR MA90 Series Owner's Operator And Maintenance Manual page 26

SECTION 3—MAINTENANCE AND TROUBLESHOOTING
PROBLEM
No power
MA90 Series
CAUSE
Control unit off
Power cord disconnected
No power in the power source
Power outage
Blown fuse
26
SOLUTION
Check power source and turn on
unit
Connect power cord to the power
source
Check power source has power
power and turn it On
Wait till the power source has
power
Replace blown fuse with an
equivalent fuse
Part No 1148139