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SYMPTOMS PROBABLE CAUSE REMEDY
Ventura MPC Troubleshooting Procedures
Error Messages
“System stalled”
(“system stalled” may alarm
when using the control panel
to run system for servicing
with the pressure relief valve
open– use manual override
switch instead)
- pressure relief valve open
- intake thru-hull closed
- airlocked system
- no signal from RotoFlow
meter
- Close pressure relief valve
- Check thru-hull
- Verify stroke sensor fully in-
serted in pump
- Check stroke sensor wiring at
control box
- Replace flow meter
“High Pressure” - blocked brine discharge
- fouled membrane
- Check brine discharge
- Clean membrane
“Voltage Too High”
“Voltage Too Low”
- battery voltage too high or
low
- loose wires or poor connec-
tions
- Charge batteries
- Check charging voltage
- Check power connections
“Re-starting” - no signal from flow meter at
startup. System stalled
- See remedy above for “system
stalled”
“Check Fuse” (followed by
fuse number)
- blown fuse at circuit board - Replace fuse (mini automotive
type ATM)
- Look for cause
“Service Prefilter” - clogged filters
- loose or defective pressure
sensor wires
- Install new filters
- Check sensor wiring
“Ck Sea Strainer”
- clogged strainer
- dirty 50 Micron prefilter
- Seacock closed
- Clean strainer screen; change 50
micron filter; check through-hull
and intake hoses
“Salinity High” - high product water salinity
- chlorine damage to mem-
branes
- defective salinity probe or
cable, cable disconnected
- Check for low feed pressure
- Check for leaks at high pressure
hoses
- Remove and clean probe con-
tacts check calibration.
- Check cable connections
- Clean membrane