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| Revision A |
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PROBLEM | PROBABLE CAUSE | SUGGESTION | |
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Recurrence of the first | The GoodKnight 420G is | Ask your home care provider to check the | |
symptoms of sleep | not set to the correct | operation of the GK420G. | |
apnea syndrome. | pressure or is not operating |
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| correctly. |
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| Your physical condition or | Contact the ordering physician. | |
| your pressure | needs have |
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| changed. |
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The GoodKnight 420G | Verify that the power | Check the connections between the power | |
does not come on (no | supply module is properly | supply module, the GK420G and the electric | |
display). | connected. |
| outlet. |
| No AC power. |
| Use another appliance, such as a lamp or radio |
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| to check that the AC power supply is present at |
| The fuse of the device has | the outlet. | |
| Contact your home care provider to get | ||
| blown. |
| information on the way of returning the device |
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| to the technical department. |
The GoodKnight 420G | Excessive | Move the device away from sources of | |
is not running properly | interference. |
| interference such as halogen lamps and cell |
and seems to be subject |
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| phones, etc. |
to interference. |
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9:33 is displayed. | The appliance is connected | This message disappears if you press the | |
(value given as a guide only) | to the mains and remains | ON/OFF button. (See reference 4 in Figure 2, | |
| on standby. |
| page 5). |
4.0 cmH2O is | Set pressure level | This pressure level has been prescribed by your | |
displayed. | (equivalent to the pressure | doctor; it can only be altered by medical | |
(value given as a guide only) | in the mask for a hose of | prescription. | |
| 1.80 m). |
| If the ramp function is active, this level of |
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| pressure will increase progressively before |
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| reaching the prescribed value and the ramp |
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| indicator is displayed. |
In 01 is displayed. | The mask is disconnected. | Check the connections between the mask, the | |
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| hose and the device. This message disappears |
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| as soon as the mask is well connected. |
In 03 is displayed. | Reduction of | the power | Check the connections between the power |
| supply voltage. |
| supply module, the GK420G and the mains |
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| socket. Unplug the power supply module, then |
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| connect it again to the mains. If the problem |
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| remains, contact the home care provider. |
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| Check the external battery and replace it, if |
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| necessary. If the problem remains, contact the |
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| home care provider. |
Er XX appears on the | The device has detected an | Contact the home care provider. | |
display. | operating fault. |
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(XX = 2 digits). |
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20 | GoodKnight 420G - Patient Manual |