GE GNPR40L - Manual (Page 25)

Problem Possible Causes What To Do
Capacity display stays Total system capacity was calculated • As the water usage continues, the remaining capacity will drop
at “9999” even though to be a value greater than 9999 below 9999, then other values will be shown.
there is water usage
Control does not respond Button is not active in the • Wait for 30 seconds until lights begin to alternate.
to REGEN button programming mode
Control does not display Transformer is unplugged • Check connection to control and wall outlet.
time of day
No electric power at outlet • Repair outlet or use a working outlet.
Defective transformer • Replace transformer.
Defective circuit board • Replace control.
Control does not display Outlet operated by a switch • Use an outlet not controlled by a switch.
correct time of day
Power outage • Reset time of day and replace battery.
No water flow display Bypass valve in “bypass” position • Set bypass valve into “service” position.
when water is flowing
Meter probe disconnected or not fully • Fully insert probe into meter housing.
(colon doesn’t blink)
connected to meter housing
Restricted meter turbine rotation due • Remove bypass valve, free up turbine and flush with clean
to foreign material in meter water. Turbine should spin freely. If not, refer to the Water Meter
Maintenance section.
Defective meter probe • Replace control.
Defective circuit board • Replace control.
Control display is frozen Back to back regenerations were • Refer to Manual Regeneration section.
at REGEN TIME REMAINING requested
Control regenerates at Power outages • Reset time of day to correct time of day and replace battery.
the wrong time of day
Time of day set incorrectly • Reset time of day to correct time of day. Note PM light.
Time of regeneration set incorrectly • Reset time of regeneration. Note PM light.
Cam gear stalled in Motor not operating • Replace motor assembly.
regeneration cycle
Motor runs backward • Replace motor assembly.
No electric power at outlet • Repair outlet or use a working outlet.
Broken gear • Replace gear.
Defective switch • Replace switch.
Binding of cam gear • Remove foreign object obstruction from valve discs or cam
gear.
Water pressure greater than 125 psi • Install pressure regulator to reduce pressure.
during regeneration
Defective circuit board • Replace control.
Continuous regeneration. Defective switch • Replace switch.
Cam gear does not stop
at the end of regeneration.
Control does not Transformer unplugged • Connect power.
regenerate automatically No electric power at outlet
• Repair outlet or use a working outlet.
or when REGEN button is
Defective motor • Replace motor assembly.
pressed
Defective switch • Replace switch.
Control does not If water flow display is not operative, • Refer to “No water flow display when water is flowing”
regenerate automatically refer to “No water flow display in this table.
but does regenerate when when water is flowing” in this table
REGEN button is pressed Incorrect hardness and capacity
• Set new control values. See the Programming the Control
settings section.
Defective circuit board • Replace control.
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Troubleshooting Procedures
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