Chapter 6: Alarms and System Failure Codes
System Failure Codes
6-16 Service Manual
6.2.11 System Failure 13
System failure 13 indicates: Defective SRAM.
6.2.12 System Failure 14
System failure 14 indicates: Defective WDOG.
6.2.13 System Failure 15
System failure 15 indicates: Safety Relay 1 test failure. Unable to turn either heater on or off by switching
safety relay 1. When troubleshooting this error code, have on hand at least the 50-pin ribbon cable.
Note: If system failure 22 appears during operation, system failure 15 should appear at startup.
Cause(s) Action(s)
Defective SRAM circuit on
control board
Replace control board.
Cause(s) Action(s)
Defective watch dog circuit
on control board
Replace control board.
Cause(s) Action(s)
If this error occurs during
system calibration, J1, J2,
and J4 were not
unplugged, or calibration
jumper JP1 is not installed
properly.
Before calibrating make sure J1, J2, and J4 on the control board are
disconnected. Verify jumper JP1 is correctly positioned. (Refer to system
calibration instructions.)
Air temperature sensor is
above 40C at power-up.
If the device was shut off when the incubator heater was hot, allow the
fan to run for a few minutes to cool to below 40C, then power down and
back up.
Defective sensor in
compartment air probe.
Disconnect connector J1 from the control board. Power cycle the device. If
the error clears, either the compartment sensor or the air probe cable is
defective. Reconnect J1 and disconnect the compartment sensor
connector at the compartment sensor. If the device now powers up OK,
the compartment sensor is defective.
Defective compartment
sensor cable.
If system failure 15 persists with connector J1 connected, and the
compartment sensor disconnected, then the compartment sensor cable is
defective.
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