Troubleshooting schedule
Fault
Reason
Action
Red triangle flashes on the
display and the fan sounds
and vibrates
Filters clogged
Change the pre-filters
Change the particle filters
Hose damaged
Check that the air flowes freely through the
hose and that the hose is in good contition
Valves
Check that the exhalation valves with
membranes are fitted to your head top.
Irregular air flow
Filter clogged
Incorrect combination
No filters mounted
Check that there are filters in the fan unit and
that they are of the same type.
i.e. SR 518 A2 + SR 510 P3
2019-10-23
OI06H-2018 SR 500 EX
22
Fault
Reason
Action
The fan unit fails to start
Battery discharged
Recharge battery
Fan-battery contact
problems
Bend/adjust/clean the battery terminals. Check
that there are two terminals. Check the contact
rivets on the fan.
Battery faulty
New battery, test another battery
Measure the voltage which should be
13
– 17 V
Charger faulty, fails to
charge the battery.
Make a visual check and make sure that there
is no dirt on the contacts to the charger or
battery.
A new battery charger.
Fan motor/electronic fault
Send the fan unit for repair
Yellow battery symbol
flashes
Battery discharged
Recharge the battery
