Troubleshooting - DeVilbiss IntelliPAP DV54 Service Manual

EN
Symptom Action
Blower does 1. Remove the cover. See Service Instructions.
not start when
2. Search for disconnected wire harnesses and reconnect, if
powered up
needed.
E03, E04, or
3. Determine if fuses are open.
E07 errors
Measures voltages on both sides of the F1 fuse. If 12 +/-.5 VDC
display
is not present on both sides of the fuse, the fuse is open and the
OR display
power supply board should be replaced. See Service Instruc-
is blank
tions.
Measure resistances, without AC power to unit, on the F2 and
F3 fuses with an ohmmeter. If either fuse is open, replace the PC
control board. See Service Instructions.
4. If all fuses are closed, install a blower known to operate properly,
see Service Instructions, and power up the unit.
If the new blower operates properly, replace the old blower.
If the new blower does not operate properly, replace the control
board. See Service Instructions.
5. Replace the cover. See Service Instructions.
E01 error code Replace the control board
displays
Blower is loud 1. Remove the cover and control board. See Service Instructions.
2. Inspect the assembly of the foam, blower, and silicone isolator.
See Blower Replacement instructions for correct placement.
3. Inspect the blower for visible space between the blower halves
and press halves back together, if needed.
4. If the assembly is not correct, reassemble the components.
5. If assembly is correct, replace the blower. See Service Instruc-
tions.
6. Replace the control board and cover. See Service Instructions.
Blower does 1. Remove the cover. See Service Instructions.
not start when
2. Search for disconnected, occluded, or kinked tubing on the pres-
powered up
sure sensor, fl ow sensor, and chassis. Correct any issues.
and E06 error
3. Search for damage to the chassis, any foam pieces, and/or tubing
displays
and replace the component, if damaged.
4. Remove the control board. See Service Instructions.
5. Search for signs of water damage to the blower assembly, pres-
sure sensor, and/or fl ow sensor and replace, if damaged.
6. Inspect the blower. If a space is visible between the top and bot-
tom sections, re-connect the halves to eliminate the space.
7. Re-calibrate the pressure and fl ow sensors.
8. If the above steps did not eliminate the error, replace the control
board. See Service Instructions.
9. Replace cover. See Service Instructions.
16 LT-2027
8. Troublesh ooting
(for symptoms listed at left, follow the steps listed below)