Chapter 6
Diagnostic Codes
REF 580-1000-02 G
Esprit® Ventilator Service Manual © Respironics, Inc.
6-17
3153
Touch screen failure.
Keyboard test (test 15): checks
touch screen to verify that all
emitters, detectors, and the touch
screen controller on the MMI PCB
are working properly.
1. Clean screen and touch frame
assembly.
2. Verify cable connections.
3. Replace IR touch frame or GUI
assembly.
4. Replace MMI PCB.
5. Replace digital PCB.
6. Replace main PCB.
3154
LED indicator failure.
LED test (test 14): prompts the
operator to confirm that each LED
on the front panel lights as
described (constant or flashing).
This code indicates that correct LED
response was not received.
1. Verify correct key press.
2. Check ribbon cable connections.
3. Replace front panel overlay.
4. Replace digital PCB.
5. Replace MMI PCB.
6. Replace main PCB.
3155
Remote alarm not sounding.
Audio test (test 13): if operator
responds that a remote alarm is
connected to the ¼ inch phone jack
on ventilator back panel, this test
activates the nurse call relay.
Operator is prompted to confirm
remote. This code indicates that
confirmation of remote alarm
function was not received.
1. Verify correct key press.
2. Check nurse call.
3. Replace CPU PCB.
4. Replace main PCB.
3156
Inhalation transducer autozero
failure.
Block patient wye test (test 1): with
no pressure in the circuit, the
inspiratory pressure transducer
(PT3) and exhalation pressure
transducer (PT2) are cross-checked.
This code indicates that the PT3
measurement was out of range.
1. Check for crimped tube.
2. Check inhalation solenoid (Chapter
5).
3. Replace sensor PCB.
4. Replace three-station solenoid
assembly.
5. Replace main to sensor cable.
6. Replace analog PCB.
7. Replace main PCB.
3157
Exhalation transducer autozero
failure.
Block patient wye test (test 1): with
no pressure in the circuit, the
inspiratory pressure transducer
(PT3) and exhalation pressure
transducer (PT2) are cross-checked.
This code indicates that the PT2
measurement was out of range.
1. Check for crimped tube.
2. Check exhalation solenoid (Chapter
5).
3. Replace sensor PCB.
4. Replace three-station solenoid
assembly.
5. Replace main to sensor cable.
6. Replace analog PCB.
7. Replace main PCB.
Diagnostic
Code
Code Description
Recommended Repair
