fisher--paykel mr850 Manual De Usuario

 

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

 

24 

This section deals with faults that cause the humidifier to alarm.  This may be caused by 
incorrect setup, faulty accessories, or a faulty humidifier.  Refer below for troubleshooting. 
 

See manual 
indicator flashing 
with audible alarm 

Record the displayed error code. 

Section 6.3 

1.  If “PtS” is displayed on the front panel, then the production 

test mode has been accessed.  Check the production test 
button is not depressed or mode set by serial command. 

Section 7.2.6 
 

See manual 
indicator light 
permanently on, 
without an audible 
alarm 

2.  Humidifier faulty.  Replace PCBs. 

Section 7.2.3 

1.  Check that there is sufficient water in the chamber.  Refill 

or replace chamber as necessary.  Check that the water 
bag is not empty, and the delivery tube is not kinked or 
occluded. 

 

2.  Check that the water level in the MR290 chamber is not 

above the marked line.  Replace chamber if the water is 
above this line. 

 

3.  Check that the gas flow rate is within specification of the 

humidifier and accessories being used.  Adjust as 
necessary. 

 

4.  Has condensate formed on the chamber probe?  Dry 

Probe and re-insert. 

 

5.  Temperature probe faulty.  Complete a temperature and 

flow accuracy test on the probe.  Replace probe as 
required. 

Section 8.2 

Water Out indicator 
flashes, 
accompanied by an 
audible alarm 

6.  Humidifier faulty.  Complete a performance test.  Service 

humidifier as required. 

Section 8 

1.  Check that the chamber probe is inserted into the 

breathing circuit correctly, and that the breathing circuit is 
set up correctly. 

 

2.  Check that there is sufficient water in the chamber.  Refill 

as necessary.  Check that the water bag and delivery tube 
are not kinked or occluded.   

 

3.  Ensure correct chamber is being used (refer Operating 

Manual) 

 

4.  Check that the gas flow rate is within specification of the 

humidifier and accessories being used.  Adjust as 
necessary. 

 

5.  Has condensate formed on the chamber probe?  Dry 

probe and re-insert. 

 

Chamber Probe 
alarm flashes 
accompanied by an 
audible alarm 

6.  Temperature probe or humidifier faulty.  Complete 

performance tests.  Replace probe or service humidifier as 
required. 

Section 8 

1.  Check that the heater wire adaptor is correctly plugged into 

the humidifier along with the breathing circuit. 
NOTE: The short lead must connect to the inspiratory limb. 

 

2.  Replace breathing circuit, and re-rest. 

 

3.  Replace heater wire adaptor, and check for intermittent 

connections.  Re-test. 

 

Heater wire 
connector alarm 
flashes, 
accompanied by an 
audible alarm 

4.  Humidifier faulty.  Replace PCBs. 

Section 7.2.3