Alarm messages
7-6
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
EXH CCT LOW TEMP
(diagnostic code 6011)
High-priority alarm. Technical alert.
Exhalation limb temperature too low. The
ventilator continues to annunciate this
alarm while the condition persists.
Autoreset when temperature is within
range.
1. Check connections of exhalation heater
and thermistor assemblies.
2. Replace exhalation heater assembly.
3. Replace exhalation thermistor
assembly.
4. Replace pressure solenoid PCB.
NOTE:
Be aware that spirometry may be affected (monitored values may be lower than
actual).
FAN FAILED ALERT
(diagnostic code 6004)
High-priority alarm. Technical alert.
Fan filter occluded or fan not operational.
The ventilator continues to annunciate this
alarm while the condition persists.
Alarm does not autoreset; you must press
alarm reset key.
1. Make sure main fan is operating.
2. Make sure room temperature is not too
low. Make sure that ventilator has
warmed up and attained a steady-state
temperature (
after
removing the
ventilator from its packaging).
3. Make sure ventilator lid is securely
closed and that the lid gasket is not
torn.
4. Make sure vents in unit are not
blocked.
5. Replace fan filter, as necessary.
6. Check secureness of main fan/ventilator
head harness connection.
7. Replace main fan.
8. Replace air flow thermistor assembly.
NOTE:
Diagnostic code 6004 can be caused by a fan that draws no current
or
by insufficient
air flow into the ventilator and across the air flow thermistor. If the fan is operating,
the cause of this diagnostic code is insufficient air flow into the ventilator.
FLO SENSOR HI TEMP
(diagnostic code 6014)
High-priority alarm. Technical alert.
Temperature at exhalation flow sensor
pressure transducer too high. The
ventilator continues to annunciate this
alarm while the condition persists.
Autoreset when temperature within range.
1. Make sure room temperature is not too
high.
2. Replace pressure solenoid PCB.
FLO SENSOR LO TEMP
(diagnostic code 6013)
High-priority alarm. Technical alert.
Temperature at exhalation flow sensor
pressure transducer too low. The ventilator
continues to annunciate this alarm while
the condition persists.
Autoreset when temperature within range.
1. Make sure room temperature is not too
low. Make sure that ventilator has
warmed up and T
xdcr
attained a steady
state.
2. Replace pressure solenoid PCB.
HI BBU TEMP ALERT
(diagnostic code 6016)
High-priority alarm. Technical alert.
Temperature measured on BBU PCB too
high.
Autoreset when temperature within range.
1. Make sure power supply fan harness is
securely connected.
2. Replace power supply fan.
3. Replace BBU PCB.
Table 7-2: Alarm messages (continued)
When you see this
message:
It means...
Do this...
Summary of Contents for Puritan Bennett 700 Series
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