Model 202 Ozone Monitor Manual Rev. J-4
27
8. TROUBLESHOOTING
If the instrument fails to operate correctly, common problems can be identified and
corrected using Table 8-1. If the problem cannot be easily corrected, please contact
Customer Service at 2B Tech via our web ticketing software at:
https://www.twobtech.com/tech-support.html
Alternatively, you can email us at
t
or call us at
+1(303)273-0559. If we mutually determine that the instrument cannot be repaired
onsite, we will provide you with a Return Authorization number and a short form to be
filled out and returned to our Service Department along with the instrument.
Following Table 8-1, the figures in Section 9
provide a “guided tour” of the Model 202
Ozone Monitor
™ so that critical components and connectors may be easily identified.
A list of serviceable parts is provided in Section 10 of this manual.
Table 8-1. Troubleshooting the Ozone Monitor for performance problems.
Problem/symptom
Likely cause
Corrective action
Instrument does not turn
on.
Power not connected
properly or circuit breaker
open.
Power cable not connected
to circuit board.
Check external power
connection for reverse
polarity or a short and wait
a few minutes for the
thermal circuit breaker to
reset.
Remove top cover and
disconnect and reconnect
power cable to circuit
board (see Figure 9-3).
Instrument turns on then
powers off.
Burned out air pump.
Remove top cover and
unplug air pump (see
Figure 9-3). Turn
instrument on; if instrument
remains running, then the
air pump motor is burned
out and shorting. Replace
air pump.
Display is blank or
nonsense.
Bad connection of display
to circuit board.
Remove top cover and
reconnect display to circuit
board (see Figure 9-3).
Check solder connections
to display.
