Pulsafeeder MicroVision EX - Troubleshooting Common Issues

72-900-06 Rev. F
Page 32 of 38
6. TROUBLESHOOTING GUIDE
Symptom
Probable Cause
Possible Solution
Controller does not
power up.
No power supplied to
controller.
Insure that correct voltage is supplied to
controller.
Check circuit breaker supplying power to
the controller.
Fuse is blown.
check/replace fuses (see page 9)
Ribbon cable.
Check ribbon cable connecting upper and
lower pc boards inside controller.
Controller displays
“Flow Switch Alarm”
alarm message.
No flow thru flow
assembly.
Insure there is enough water flow through
the assembly. At least 1 GPM (3.8 LPM) of
flow.
Flow switch wiring or
connector loose.
Check flow switch connections
Flow switch stuck.
Clean flow switch sensor mechanicals.
Flow assembly clogged.
Clean inside flow assembly.
Flow switch input jumper
missing.
Install jumper if flow switch is not used.
Controller displays "
Limit" alarm message.
Programmed limit timer
set too short.
Adjust limit timer value to longer duration
Clogged bleed valve or
drain.
Clean valve or drain.
Faulty bleed valve.
Replace bleed valve.
Controller displays
"Probe Comm" alarm
message.
probe wiring or connector
loose.
Check probe connections
Bad Conductivity probe
Replace probe.
Controller displays
"Bleed Limit" alarm
message.
Conductivity Limit timer
set too short.
Adjust limit timer.
Bleed valve/drain failure.
Clear obstruction around drain.
Conductivity, pH or
ORP reading on
controller does not
match portable hand-
held reading.
reading is within
specification.
Due to variations in hand-held meters,
standard solutions, temperature
compensation, and the controller’s accuracy
of +/- 2%, the reading on the controller
may not match that of your hand-held