ResMed VPAP III ST-A manual Troubleshooting

Inverter or UPS

The power specifications for an inverter or a UPS are listed in the following table.

Configuration	Continuous Output	Peak Output
	Power Rating	Power Rating
VPAP III ST-A with QuickNav (without	60W	225W
HumidAire 2i humidifier)
VPAP III ST-A with QuickNav with	150W	300W	(110V inverter)
HumidAire 2i humidifier		600W	(240V inverter)
Note: Use only a pure sine wave

inverter when a HumidAire 2i is attached.

The case temperature should be less than 50°C at an ambient temperature of 35°C. (For VPAP III ST-A with QuickNav temperature specifications, see “System Specifications” on page 16.)

Troubleshooting

If there is a problem, try the following suggestions. If the problem cannot be solved, contact your equipment supplier or ResMed. Do not attempt to open the device.

Problem / Possible Cause		Solution
No display.
	Power not connected or switch at back is	Ensure the power cable is connected and
	not on.	that the switch at the back of the device is
		in the ON position.
Insufficient air delivered from the device.
	Ramp Time is in use.	Wait for air pressure to build up.
	Air filter is dirty.	Replace air filter.
	Air tubing is kinked or punctured.	Straighten or replace tubing.
	Air tubing is not connected properly.	Check air tubing.
	Mask and headgear not positioned	Adjust position of mask and headgear.
	correctly.
	Plug(s) missing from access port(s) on	Replace plug(s).
	mask.
	Pressure required for treatment may have	See your clinician to adjust the pressure.
	changed.
The device does not start when you breathe into the mask (when
SmartStart is enabled).
	Power cord not connected properly.	Connect power cord firmly at both ends.
	Power outlet may be faulty.	Try another power outlet.
	The device is not switched on.	Turn power switch at rear of the device to
		on (I).
	SmartStart not on.	Enable SmartStart.

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Troubleshooting 15