ResMed Airsense 10 Auto slow to restart after power outage

I recently experienced a power outage while using my ResMed Airsense 10 Auto. When the power came back on I expected the machine to be available to use immediately but, while I could turn on the warming (which starts the blower at a very low level), the on/off button on the top of the machine did not function. It took approximately 20 min. before the blower kicked back on as if I had pressed the on button. Has anyone else experienced this? Is there a sensor that has to warm up before it can be used? It is just my APAP or is this common to the model?

Are you certain that your mains power came back on at full voltage?

Sometimes it comes back on in a brownout condition, until whatever the supply fault was is fully rectified.

billbolton wrote: ↑

Thu Jul 04, 2019 1:11 am

Are you certain that your mains power came back on at full voltage?

Sometimes it comes back on in a brownout condition, until whatever the supply fault was is fully rectified.

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz (as is the case with almost every machine currently sold). I suspect it an go a little lower or higher as well (don't try this at home).

D.H. wrote: ↑

Thu Jul 04, 2019 11:34 am

billbolton wrote: ↑

Thu Jul 04, 2019 1:11 am

Are you certain that your mains power came back on at full voltage?

Sometimes it comes back on in a brownout condition, until whatever the supply fault was is fully rectified.

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz (as is the case with almost every machine currently sold). I suspect it an go a little lower or higher as well (don't try this at home).

And your point is...



With full mains power the machine should then straight back on. Try again during the day unplug the machine whilst running and plug it back on press the start button and it should start straight back up, if you have smart start enabled it should start With a breath

As with all smart machines, they have circuits in them(Computers), that don't like being shut down incorrectly, to reset them unplug them let the set unplugged to drain the circuits, plug them in and turn them back on,(unless you don't have hands, press the ON Button). The unplug time should be about 15 minutes, it varies. Jim

Jas_williams wrote: ↑

Thu Jul 04, 2019 11:50 am

D.H. wrote: ↑

Thu Jul 04, 2019 11:34 am

billbolton wrote: ↑

Thu Jul 04, 2019 1:11 am

Are you certain that your mains power came back on at full voltage?

Sometimes it comes back on in a brownout condition, until whatever the supply fault was is fully rectified.

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz (as is the case with almost every machine currently sold). I suspect it an go a little lower or higher as well (don't try this at home).

And your point is...

THe point is that if the power is browned out to 100 volts (US standard is 110 to 120), the transformer (the big brick in the middle of the cord) will still put out 24 volts DC. If the voltage falls to the high 90s, I think it would still put out a full 24 volts.

Jas_williams wrote: ↑

Thu Jul 04, 2019 11:50 am

D.H. wrote: ↑

Thu Jul 04, 2019 11:34 am

billbolton wrote: ↑

Thu Jul 04, 2019 1:11 am

Are you certain that your mains power came back on at full voltage?

Sometimes it comes back on in a brownout condition, until whatever the supply fault was is fully rectified.

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz (as is the case with almost every machine currently sold). I suspect it an go a little lower or higher as well (don't try this at home).

And your point is..

DH doesn't DO points, he does meaningless rambles.

D.H. wrote: ↑

Thu Jul 04, 2019 11:34 am

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz

So if the mains comes back at, say 80V (20% below the switch mode power supply minimum voltage) it wont be happy... which is my point.

I have heard of brownouts frying refrigerators, air conditioners, and possibly oxygen concentrators.
If brownouts are common in your area, a UPS might be a good investment,
at least for the equipment that would be affected.
Am I warm?

billbolton wrote: ↑

Fri Jul 05, 2019 12:03 am

D.H. wrote: ↑

Thu Jul 04, 2019 11:34 am

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz

So if the mains comes back at, say 80V (20% below the switch mode power supply minimum voltage) it wont be happy... which is my point.

I think that it will either put out a full 24 volts or nothing at all.

D.H. wrote: ↑

Fri Jul 05, 2019 4:01 pm

I think

Evidence to the contrary.

D.H. wrote: ↑

Fri Jul 05, 2019 4:01 pm

billbolton wrote: ↑

Fri Jul 05, 2019 12:03 am

D.H. wrote: ↑

Thu Jul 04, 2019 11:34 am

The machine in the OPs profile supports AC electricity from 100 to 240 volts, 50 or 60 hz

So if the mains comes back at, say 80V (20% below the switch mode power supply minimum voltage) it wont be happy... which is my point.

I think that it will either put out a full 24 volts or nothing at all.

Many of us don't trust your thinking. We would like facts from a known good source. Jim

You know what would have been nice?

The OP coming back and giving us an update. Something along the lines of:

• The next day the machine worked just fine, or
• Since the power failure the blower hasn't worked reliable.

Something.


Hit and run artist.

Bless your heart. I am not a hit and run artist but was temporarily without an internet connection.

According to Sleepy Head I woke up 30 min after the power failed and unplugged my APAP from the wall to prevent damage from voltage fluctuations when the power came back on. After the power was restored an hour later I waited some time to make sure it was going to be stable. While a brown out is worth considering, the incandescent lights I had turned on at that point did not give any visual evidence of a brown out situation. The APAP has functioned flawlessly after the aforementioned 20 min lag. One possible reason for the issue may have been that I had unplugged the power brick still connected to the APAP from the wall and plugged it back in that way. Typically I plug the power brick in first then plug the power brick in to the APAP. It is possible that doing power brick to APAP and then to wall is what caused the issue. I will have to run an experiment at some future date. Regardless of the result I do believe I will lay in a back up APAP since, based on the responses and lack of responses, this may be an issue specific to my machine.

Get a battery backup if you live ins an area that has frequent power outages or if you panic at the thought of sleeping without your equipment (raises hand ).