6.4Diagnostic Menu

By pressing the mute and mode buttons together for 1 second, the diagnostic menu is entered, indicated by the display of two rows of dashes ‘= = =’. Releasing both buttons will allow the diagnostic menu to cycle automatically through the menu, pausing at each function. Pressing the mute button at this time will display the value behind each function for as long as the mute button is held.

6.4.1Diagnostic Menu for Software Versions 5.45 & 5.70

Display

Description

TC

Temperature Compensation (TC) algorithm

 

‘---‘ = 0.0 °C of chamber compensation. ( CSP = 37.0 °C)

 

‘Lo ’ = 1.5 °C of chamber compensation. ( CSP = 38.5 °C )

 

‘Hi ’ = 3.0 °C of chamber compensation. ( CSP = 40.0 °C )

 

To change the TC value the press the Mute and Mode buttons together for 1

 

second. The humidifier will confirm the change with a double-beep.

CSP

Chamber set point, in 0.1 °C resolution e.g.: 37.0

Cdc

Chamber Duty Cycle (%)

HP

Heater Plate Temperature (1 °C)

 

 

Flo

Gas Flow Rate (0.1 LPM)

 

“---“ = Unknown Flow (flow measurement not started)

 

 

FLr

Gas Flow Rate Range:

 

“---“ = Unknown Flow (flow measurement not started)

 

“no” = No flow

 

“Lo” = Low flow, ( < 3 LPM )

 

“In”

= Intermediate flow, ( 2 to 17 LPM )

 

“Hi”

= High flow, ( > 14 LPM )

 

“ -“

= Ventilated flow detected

 

 

OFF

Offset temperature difference between the chamber and airway set temperatures

 

(0.1 °C)

ASP

Airway temperature set point (0.1 °C)

Adc

Airway Duty Cycle (%)

LAS

Last Humidifier Alarm State, the display will blank, and the humidifier’s last alarm

 

will be shown on the indicators. To clear LAS, press and hold the mute and mode

 

buttons for 1 second. The humidifier will beep when LAS has been cleared.

LFS

Last Humidifiers Fault State, refer to section 6.3. To clear LFS, press and hold the

 

mute and mode buttons for 1 second. The humidifier will beep when LFS has been

 

cleared.

SoF

Software version

 

 

End

Press the mute button to cycle to the start of the menu, or the diagnostic menu will

 

automatically exit after 6 seconds

MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)

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