System Failure 16; System Failure 17; System Failure 18 - GE Giraffe OmniBed Service Manual

Chapter 4: Troubleshooting

4.4.14 System Failure 16

System failure 16 indicates: When the unit performed Power-on Self Test, either the incubator heater or the
radiant heater could not be turned off.
Cause(s)
If this error occurs
during System
Calibration
Defective solid state
relay (SSR)
Defective radiant
heater SSR
Defective incubator
heater SSR
Defective current sense
circuit on relay board.

4.4.15 System Failure 17

System failure 17 indicates: When performing Power-on Self Test in System Calibration mode, the radiant
heater could not be turned off.
Cause(s)

4.4.16 System Failure 18

System failure 18 indicates: Defective Variables.
Cause(s)
Defective SRAM circuit on control board.
48
Action(s)
Reconnect J1, J2 and J4 on the control board. Put JP1 in Normal position. (Refer to system
calibration instructions). Power up unit in normal operating mode and follow instructions for
the error that occurs.
Power up the unit in service mode. Run status test on the second service screen and verify
that the I/WHTROFF test fails. If the status test fails, then it is an SSR problem. If the status test
does not fail, then try the recommended action for a defective current sense circuit on relay
board, below.
To determine which SSR is defective, disconnect an output wire from them one at a time and
rerun the status rest.
Disconnect the black wire (larger diameter) from the AC side of the radiant heater solid state
relay. Run status test. If I/WHTROFF test passes replace the radiant heater SSR. If it still fails
reconnect the wire to the SSR.
Disconnect the black wire (larger diameter) from the AC side of the incubator heater solid state
relay. Run status test. If I/WHTROFF test passes replace the incubator heater SSR. If it still fails
reconnect the wire to the SSR.
If failure persists, replace relay board.
Action(s)
Reconnect J1, J2 and J4 on the control board. Put JP1 in Normal position. (Refer to system
calibration instructions.) Power up unit in normal operating mode and follow instructions for
the error that occurs.
6600-0343-000 104
Action(s)
Replace the control board.
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.