Chapter 6: Alarms and System Failure Codes
Alarms
Service Manual 6-9
6.1.17 In Transition - Heat Off Alarm
Cause or Circumstances Failure Action
As the canopy reaches the top
position (for warmer mode) or
the bottom position (for
incubator mode), the software
does not see the corresponding
switch in the right rail close, to
signal that the rail is at the end
position.
NA Note: This message should always
be on when the device is in
transition between the
incubator and warmer
modes.
WARMER MODE
The In transition Heat Off
message does not go off when
canopy is all the way up.
If the alarm message Heater
Doors Not Open is also
displayed, troubleshoot that
alarm first.
Defective rail drive belt Check the belt.
Canopy is not going high
enough because spring tube in
right rail is not adjusted
correctly.
Try pushing up slightly on the
canopy to see if the switch closes
and the message goes off. If it does,
adjust the spring tube position so
there is less spring tension. Refer to
repair procedures, section 7.4.2
steps 14-15.
Defective switch or harness Switches can be tested in service
mode. To check with an ohmmeter,
disconnect harness from J36 on
relay board. Measure resistance at
pins 1-2. Should be open and then
close when canopy reaches top of
its travel. If not, either switch or
harness are defective. Both are
located in right rail.
INCUBATOR MODE
In transition Heat Off message
does not go off when canopy is
all the way down.
Canopy is not going low
enough because it needs
adjustment.
Adjust the canopy as described in
Chapter 7.
Defective switch or harness Switches can be tested in service
mode. To check with an ohmmeter,
disconnect harness from J36 on
relay board. Measure resistance at
pins 1-2. Should be open and then
close when canopy reaches top of
its travel. If not, either switch or
harness are defective. Both are
located in right rail.
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