Csm Comm Error - Hayward ProLogic Troubleshooting Manual

3. CSM Comm Error

Is a chemistry YES
Verify connections YES
CSM Comm
Wire is
sensing module
& inspect CSM
damaged?
Error
installed?
wire for damage
NO
NO
Disable
Problem
Chemistry
solved
Sensing
Replace CSM
Test Comm port
Module (GLX-
power
SD-ELEC-MOD)
Replace CSM YES 5-10VDC
Module (GLX- between pins
SD-ELEC-MOD) 1 & 3?
NO
Replace main
board
(see pg. 17)
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