Somnetics Transcend Sleep Apnea Therapy, Руководство пользователя

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Page 32 Transcend Sleep Apnea Therapy User Manual
Fault, alert and reminder codes
Fault codes
When Transcend encounters a fault the processor resets and enters a fault loop. In this
loop, the device repeatedly flashes the yellow fault LED to indicate the specific fault
encountered. If the device is reset or power cycled while in fault mode, it re-enters fault
mode upon power up. To exit fault mode, the fault must be acknowledged by holding the
power button down until the fault LED stops flashing. At this point, when the power button
is released, the processor resets and the device powers up in standby mode.
Device
LED
Fault
LED
Error Comments
Off Flashes 2
times
Stack overflow Internal software fault.
Off Flashes 3
times *
Pressure too high While delivering therapy, the pressure sensor measured a
pressure greater than 30 cmH2O. This could be due to a
"pinched" or disconnected pressure sense tube. This could also
be due to faulty pressure sensor or electronics.
Off Flashes 4
times *
No Pressure While delivering therapy, the pressure sensor measured
approximately 0 cmH2O. This could be due to an open output
hose. This could also be due to a "pinched" or disconnected
pressure sense tube. This could also be due to faulty pressure
sensor or electronics.
Off Flashes 6
times
Attempt to set
invalid time
An attempt was made to set the device real time clock (RTC)
to an invalid value. The device RTC is configured as part of the
manufacturing process, thus this error should only occur then.
Off Flashes 7
times *
Pressure sensor
out of range
While in standby, the pressure sensor read a value outside its
expected range. This could be due to a "pinched" or blocked
pressure sense tube. This could also be due to faulty pressure
sensor or electronics.
Off Flashes 9
times
Bad firmware
checksum
At power up, the device calculates a checksum of the firmware
code and compares it against the checksum it calculated when
it was initially programmed. This error indicates some part of
the firmware has been corrupted. Likely causes would be
electrostatic discharge or hardware problem.
Off Flashes
11 times
Stalled blower While delivering therapy, the device failed to detect any
blower motion for 2 seconds. This is likely due to a faulty
blower motor, loose blower connector or faulty electronics.
Off Flashes
12 times
Low power While delivering therapy, the device determined that the
blower was stalled (see above). However, a check of the
voltage indicates there may not be sufficient power to spin the
blower. This is likely due to a faulty power supply or battery.
Off Flashes
13
times*
Processor over-
temp
The processor on-chip temperature sensor has reported an
excessive temperature.
Off Flashes
14
times*
Blower over-
temp
The blower thermistor has reported an excessive temperature.
* If this fault occurs, check all tubes and hoses to ensure that they are properly connected. If the fault
occurred during therapy, make sure the mask is properly fitted and not leaking. Check that all filters are
properly installed and not excessively dirty.