GE GNPR40L, GNPR48L Troubleshooting Procedures, Problem, Possible Causes, What To Do

Models: GNPR48L GNPR40L

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Troubleshooting Procedures

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Troubleshooting Procedures

Problem

Possible Causes

What To Do

Capacity display stays at “9999” even though there is water usage

Total system capacity was calculated to be a value greater than 9999

As the water usage continues, the remaining capacity will drop below 9999, then other values will be shown.

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 to foreign material in meter

Remove bypass valve, free up turbine and flush with clean 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 at REGEN TIME REMAINING requested

Refer to Manual Regeneration section.

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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GE GNPR40L, GNPR48L Troubleshooting Procedures, Problem, Possible Causes, What To Do, Refer to Manual Regeneration section