Hydronix Hydro-Control VI, Operator'S Manual

Page: 80 / 88

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