Check System: Csm Comm Error - Hayward Sense and Dispense AQL-CHEM Troubleshooting Manual

Check System: CSM Comm Error

CSM Comm
Error
(Page 8-9)
Troubleshooting Chart
Inspect CSM
(chem. sensing
module) cable
for damage
(Page 8)
Is the CSM
NO
cable
damaged?
YES
Replace
NO
cable
(Page 8)
YES
Verify CSM
cable is
plugged in
(Page 8)
Is the CSM
YES
cable plugged
in?
YES
NO
Plug in and
NO
reboot
system
Relocate
or reduce
YES
sun exposure
(Page 9)
Problem
solved
Measure 10-15VDC
NO
between pins 2-4
(black and red)
(Page 9)
YES
another
YES
Is flow cell
in direct
sunlight?
NO
Replace
NO
Module
YES
Try
NO
comm
port
Replace
PCB
Page 28