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GoodKnight unit ramps down, "drops out of warp"
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jpap Offline

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Posts: 1
Joined: Sep 2016

Machine: GoodKnight 425
Mask Type: Other
Mask Make & Model: Georgia
Humidifier: none
CPAP Pressure: unsure
CPAP Software: Not using software

Other Comments:

Sex: Male
Location: United States

Post: #1
GoodKnight unit ramps down, "drops out of warp"
Hello friends -

I'm using an older GoodKnight 425 bipap. Suddenly, every 20 minutes, it ramps down and the stream of air is weakened. Sort of like the opposite of the ramp up feature, only it isn't gradual - the unit suddenly drops our of warp. I can turn it off and back on again and it corrects the issue for about 20 minutes then the cycle starts all over. Needless to say, it's a little jarring. Anyone know if this is a setting and/or how to correct it?

Thanks!
09-02-2016 05:47 PM
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chill Offline

Advisory Members

Posts: 864
Joined: Mar 2016

Machine: DreamStation X500
Mask Type: Full face mask
Mask Make & Model: Walk-in Mask Closet
Humidifier: DreamStation
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments: CPAP True Believer

Sex: Male
Location: Vancouver, Canada

Post: #2
RE: GoodKnight unit ramps down, "drops out of warp"
That sounds like its time for a new machine. I'd guess the blower motor/bearings are shot. Maybe once it gets up to a certain temperature, it just shuts down?
09-02-2016 06:03 PM
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justMongo Offline

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Posts: 3,854
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #3
RE: GoodKnight unit ramps down, "drops out of warp"
Warp core damaged by Klingons?

The GoodKnight 425 is obsolete; and received less than *stellar* reviews.
Best option seems to be to replace with a current generation machine.

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09-02-2016 06:44 PM
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trish6hundred Offline

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Posts: 6,452
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #4
RE: GoodKnight unit ramps down, "drops out of warp"
Hi jpap,
WELCOME! to the forum.!
Unfortunately, it sounds like you need a new machine. That's an old Puritan Bennett machine.
the company is a french company called Sefam Medical that bought them out several years ago, I don't know much else about them other than that.
Hang in there for more responses to your posts and I wish you good luck in finding a machine.

trish6hundred
09-02-2016 11:09 PM
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sotxrdr Offline

New Members

Posts: 1
Joined: Aug 2016

Machine: ResMed VPAP Auto 25
Mask Type: Nasal pillows
Mask Make & Model: Resmed Mirage Swift II
Humidifier: Resmed H4i
CPAP Pressure: 13/9
CPAP Software: ResScan SleepyHead

Other Comments: Using since 2003.

Sex: Undisclosed
Location: Texas

Post: #5
RE: GoodKnight unit ramps down, "drops out of warp"
Concur with the earlier comments. Time for a new machine.

Sorry about your Goodknight 425, I think it's a goner and there isn't much support left for those machines. I've had three of them. Bought the first one to use for travel. The last was bought as old, new stock without warranty from a DME and sacrificed for parts after it threw error codes the second time it powered up. It did manage to supply a motor controller card and a few other parts but in the end it was futile. From discussions with the DME's tech, the failure rate on the GK425s they sold was so high and so early in service life, if yours is more than a few years old you have an exception.
09-04-2016 11:51 PM
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cate1898 Offline

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Posts: 784
Joined: Aug 2015

Machine: PR System One 560BT Auto
Mask Type: Nasal pillows
Mask Make & Model: P10's/backup-DreamWear
Humidifier: PR attached
CPAP Pressure: 8.5 - 13. A-Flex 3
CPAP Software: SleepyHead

Other Comments: Began CPAP Therapy Sept. 11, 2015. Hx Hypertension, Post Graves Disease, chronic migraines.

Sex: Female
Location: Southern Ontario//SW Florida

Post: #6
RE: GoodKnight unit ramps down, "drops out of warp"
Welcome to the forum jpap! Glad you found us.

You might want to take a look at the Supplier List above. Click on the link. Check out each one for the best deal. Sometimes certain ones have awesome sales. Supplier #2 sells new and gently used machines at a good price. JMHO but you might want to stick with a big name brand like ResMed or Phillips Respironics, or Fisher & Paykel.

Good luck to you and keep us posted!

APNEABOARD - A great place to be if you're a hosehead!! Rolleyes

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EVERY ACCOMPLISHMENT BEGINS WITH THE DECISION TO TRY!
09-05-2016 06:04 AM
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