Huntleigh Flowtron AC550, Service Manual

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3.2 Service Mode Checks
Service mode gives additional information on the type of alarm fault.
To access the service mode, hold the Single Leg button down for
approximately 13 seconds. The unit will then ‘beep’ and the red LED on the top
panel will be constantly displayed.
The main display will now indicate the actual pressure to 1 mmHg resolution
and also display the detailed fault codes.
Fault codes and counter measures are described in the following table (see
pages 3-3 and 3-4).
3.3 Loss of Electrical Power
Power loss can be due to the following :
1. No electricity supply at wall outlet.
2. Faulty wall outlet.
3. Damaged cord or cord plug.
4. Defective fuse link.
5. Damaged internal wiring.
6. Cord plug inadvertently removed from wall outlet.
3.4
247901 3-2 Issue 1
March 1998