Blue I HydroGuard HG-302 Manual De Uso página 132

Problem / Symptoms
Display not functioning or is
displaying odd numbers
Controller won't power up
ORP and pH readings are
very far from normal value
Unstable ORP and pH
Readings
pH and/or Cl not Feeding
Chlorine Measurement is
Zero or Low
Potential Cause
Connection between boards is loose
pH and ORP wires reversed
Chipset is loose or pin bent
Fuse is blown
I/O board has been damaged due to
improper electrical installation
ORP and pH wires are reversed or
disconnected
ORP or pH probe is bad
Poor Grounding
In menu change mode
Overfeed Safety Shut-off
Reagent Pumps not Primed or broken
Chlorine too high (~20ppm) and is
bleaching reagents
Solenoid not shutting completely
Using wrong or not original reagents or
reagent expired date
Needles Blocked/Damaged
Check all connections between
Trace pH and ORP wires from probe
Check that no pins on the chipset are
bent and it is in completely and
Check and Replace fuse above main
Check for burn marks on I/O board.
Recheck for proper wiring -- confirm
all neutrals and grounds in contact
are from the same power supply
trace wires back to Control Board
Check: PT100, I/O board ground,
ORP and pH wire grounding
Hit escape to exit out of menu --
Check for overfeed alarm -- system
reset to restore (adjust overfeed time
Prime for 90 seconds - confirm
pumps work properly and droplets
form and drop from each needle
Dilute and test manually -- controller
will operate fine once back in normal
confirm that water stops flowing
when reading starts (timer gets to
zero). Unscrew solenoid and clean
the tip -- check filter for holes.
make sure reagent are in good
conditions, replace if needed
Press pump and confirm that droplets
46
Solution / Suggestion
boards
back to board
correctly
Power Supply
and confirm
replace faulty probe
return to auto mode
if needed)
level
forming as expected