Calibration and Maintenance
47
Chapter 5
Troubleshooting
The table below lists the symptoms, possible causes, and recommended
solutions for the Model 8552/8554 Q-T
RAK
TM
Plus IAQ Monitor.
Symptom
Possible Cause
Corrective Action
No display
Unit not switched on.
Low or dead batteries.
Dirty battery contacts.
Switch unit on.
Replace the batteries or plug in
the AC adapter.
Clean the battery contacts by
rubbing a rubber eraser on each
contact.
LO BAT
message
appears
Low battery charge.
Incorrect AC adapter.
Low AC line voltage.
Dirty battery contacts.
Replace batteries or use AC
adapter.
Replace with the correct AC
adapter.
Correct the AC line voltage; use
batteries.
Clean the battery contacts.
0% MEM
displays
Memory is full.
Download the logged and single
point memory to a PC using
T
RAK
P
RO
software if desired.
Clear memory.
Humidity
reading near
zero or not
believable
Probe exposed to intense
light.
Shade the probe while taking
samples.
No keypad
response
Display/Lockout switch in
lockout position.
Slide lockout switch to normal
position.
FACTORY
SERVICE
reminder is
displayed
Instrument is near the end
of the annual calibration
period.
Press the
↵
key to continue. For
optimum performance, TSI
recommends annual factory
servicing.
"CO CAL"
The CO sensor requires
calibration.
See CO sensor specifications;
approximately page 121 (CO
negative readings).
"CO2 FLT"
There is a fault in the CO
2
sensor.
Factory service is required to
correct this fault condition.
Содержание Q-TRAK Plus 8552
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Страница 52: ...Chapter 3 46 ...
Страница 57: ...TSI Incorporated ...