MIOX RIO-S Series Operators Manual
102-00130-D
Page
56
Troubleshooting Guide
Table 3: Fault Conditions Troubleshooting Guide
System Display
Fault
Cause (most likely
to least likely)
Remedial Action
Leak Detected –
Bank 1-4
Liquid detected on
cell bank sensing
band near drain
1)
Excessive water
pressure in cell
2)
Blockage in
oxidant piping
3)
Leakage from
cell bank
triggered sensor
4)
Rupture disk
blown
1)
Verify pressure in
cell plumbing <25
PSI
2)
Check for blockage
or closed valves in
downstream
plumbing
3)
Replace rupture
disk and dry
sensing band
Contactor Fail to
Close
Contactor did not
close
1)
Phase detector
tripped
2)
Contactor coil
failed
1)
Check for proper
phase-to-phase
voltage
2)
Contact MIOX
Customer Service
Contactor Fail to
Open
Contactor did not
open
Contactor failed
Contact MIOX
Customer Service
High Cell Current
– Bank 1-4
Cell amperage
exceeds max limit
1)
Excessive flow or
pressure
fluctuations
2)
Main water flow
control valve
failure
1)
Verify adequate
water flow and
consistent pressure
2)
Contact MIOX
Customer Service
Low Cell Voltage –
Bank 1-4
Cell Voltage is
below lower limit
400 VDC
1)
Main or cell
breakers tripped
2)
Contactor failed
3)
Low AC voltage
feeding system
1)
Reset all breakers
2)
Verify 400 or 480
VAC feeding unit
3)
Contact MIOX
Customer Service
High Oxidant
Temp – Bank 1-4
Cell outlet
temperature
exceeds 150F
1)
Flow rate
through cell has
decreased
2)
Oxidant
temperature
thermowell
failure
1)
Acid wash cell
2)
Contact MIOX
Customer Service
High Brine Pump
Voltage – Bank 1-
4
Brine pump control
voltage greater
than 3.75 V.
1)
Brine Loss
2)
Brine valve
failure
3)
Brine pump
failure
4)
Cell is worn out
1)
Verify brine supply
to the system
2)
Contact MIOX
Customer Service
High Delta Temp –
Bank 1-4
Temp difference
between inlet and
outlet of cells
greater than 50° F
or less than -10° F.
1)
Blockage of flow
within cell
2)
Temperature
thermowell
failure
1)
Acid wash cell
2)
Contact MIOX
Customer Service
