17
LT-2 027
Symptom Action (for symptoms listed at left, follow the steps listed below)
Pressure or
fl ow out of
tolerance
(Pressure ±
0.5 cmH2O of
setting)
(Flow ± 10
L/Min)
1. Remove the cover. See Service Instructions.
2. Search for disconnected, occluded, or kinked tubing on the pres-
sure sensor or chassis. Correct any issues.
3. Search for damage to any foam pieces and/or tubing 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 fl ow sensor and replace the component, if dam-
aged.
6. Inspect the blower. If a space is visible between the top and bot-
tom sections, press the halves together to eliminate the space.
7. Repeat the pressure and fl ow accuracy tests.
8. If the pressure or fl ow remains out of tolerance, re-calibrate the
unit. See Service Instructions.
9. If the pressure remains out of tolerance, replace the control
board. See Service Instructions.
10. Replace cover. See Service Instructions.
Calibration
failure–
Error codes
E95, E96, E97,
E98
Display on ter-
minal program
during
calibration.
1. Remove the cover. See Service Instructions.
2. Search for damage, and/or loose connections, on the air intake
fi lter, intake foam components, and all internal tubing and replace
or reconnect components, if needed. Search for disconnected,
occluded, or kinked tubing on the pressure sensor, fl ow sensor,
or chassis and reconnect or replace tubing, if needed.
3. Remove the control board. See Service Instructions.
4. Search for signs of water damage to the blower assembly, pres-
sure sensor, and fl ow sensor and replace, if damaged.
5. Inspect the blower. If a space is visible between the top and bot-
tom sections, press the halves to eliminate the space.
6. Repeat Manual Calibration Procedure.
7. If the error codes are not resolved, replace the control board.
See Service Instructions.
8. Replace the cover. See Service Instructions.
8.
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