Troubleshooting
TROUBLESHOOTING
This section lists common problems that may be encountered with the flow
monitor, the possible causes and the recommended remedies� Most problems are
due to improper wiring and/or programming procedures� The problem may also
be in the flow meter, valve, pump or other piece of equipment�
Be sure that all other equipment is functioning properly� The PT5002 Flow Monitor
is extensively tested at the factory before shipment� However, the unit may get
damaged during transit or installation� If after all possible remedies have been
tried and the problem persists, contact your local representative or Rain Bird�
Problem
Possible Causes
Remedies
Unit has power
but display does
not light up
1� Incorrect power wiring
1� Re-check power wiring
Transmitter is
connected but
the PT5002 does
not count
1� Incorrect transmitter wiring or
broken wire
2� Transmitter is defective
3� No sensory type selected
4� Wrong scale factor
5� Low frequency input must be
on terminal #7
6� Meter is defective, rotor
not turning
1� Check wiring diagrams
2� Replace parts or entire unit
3� Select a sensor type� See
4� Check scale factor calculation� For
example, if programmed 0�001 instead of
0�100, unit will wait for 100 pulses before
decrementing one count
5� Verify connection
6� Disassemble meter, check rotor, replace
if defective
Valve does
not close at
setpoints
1� Relay output is not
properly connected
2� Relay is defective
3� Valve components are defective
1� Reconnect relay wiring
2� Contact factory for replacement
3� Check and replace valve components�
Counter
accumulates too
many counts
1� Wrong scale factor
2� Electrical noise causing extra
pulses�
3� Excessive vibration�
1� Check scale factor calculation
2� Check wiring� Make sure power lines are
not touching or close to pulse signal line�
Always use shielded cable
3� Dampen vibration
Some of the
keys on the
control panel are
not operational
1� Broken switch behind
control panel
2� Function not available on
this model
3� Problem with internal
components
1� Replace the Flow Monitor
2� See
“Operator Interface” on page 17
3� Return the Flow Monitor to the factory
for repair
4� Cycle the power to the Flow Monitor
DISPLAY
OVERRUN error
1� There are more than 8 digits in
the display
1� Check that the unit of measure you
entered will not result in a readout
greater than 8 digits
2� Check the display precision and reduce
it, if possible
Page 35
June 2020
