Hydronix Hydro-Control VI Operator's Manual page 80

Diagnostics
Symptom: Faulty output
Possible explanation
Incorrect OPTO module
used for the output
Wiring fault
Blown fuse
80 Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
Check Required result
Voltage range for OPTO module
the output module. colour:
As a quick guide,
look at the colour of
the OPTO module
Red: DC module,
by looking though
typically up to 60v
the holes in the
DC
back of the
controller.
Black: AC module,
typically up to 110v
AC
When the OPTO See User Guide for
switches the OPTO
more details.
LED should light up.
Check wiring when
the OPTO is on.
Remove rear cover Continuity check ok,
and check zero ohms.
continuity of the
fuse on the specific
OPTO module
using a meter.
Appendix A
Action required on failure
Contact Hydronix for correct
OPTO module rating.
Force relay to switch on and
check wiring. Go to Menu >
I/O Setup and Status. Select
output and switch on.
Contact Hydronix for
replacement fuse.