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Troubleshooting (cont.)
Symptoms Probable Causes Recommended Action
2. Motor starts, but all jets
are not functioning.
A. Jet is closed. A. Rotate jet trim counterclockwise to
open.
B. Jet not installed correctly. B. Reinstall jet; check for O-ring
damage.
C. Jets are blocked. C. Remove blockage.
3. User keypad is
illuminated, but does not
respond to buttons or
outer ring.
A. Control program is locked. A. Reset GFCI or RCD.
B. Wiring harness from user
keypad to control is loose,
disconnected or damaged.
B. Check wiring for proper
connections. Replace wiring
harness if necessary.
C. User keypad does not work. C. Replace user keypad.
D. Control does not work. D. Replace control.
4. User keypad indicator bar
keeps scanning at
power-up.
A. Control program is locked. A. Reset GFCI or RCD.
B. Wiring harness from user
keypad to control is loose,
disconnected or damaged.
B. Check wiring for proper
connections. Replace wiring
harness if necessary.
C. User keypad does not work. C. Replace user keypad.
D. Control does not work. D. Replace control.
5. User keypad is
illuminated, but pump
won’t start.
A. Power cord from pump to
control is loose, disconnected or
damaged.
A. Check wiring for proper
connections.
B. Pump does not work. B. Replace pump.
C. Control does not work. C. Replace control.
6. Motor runs but pump
won’t prime (cavitates).
A. Pump is shimmed too high. A. Lower pump/control to subfloor
level.
B. Small air leak at pump inlet. B. Securely tighten nut(s) on intake
side of pump.
C. Motor/pump does not work. C. Replace motor/pump.
D. Control does not work. D. Replace control.
7. Pump stops before 18
minutes.
A. GFCI or RCD tripped. A. Identify source of fault, and correct.
Reset GFCI or RCD.
B. Suction is blocked. B. Remove obstruction.
C. Jets are blocked. C. Remove blockage.
D. Motor overheated and
protection device activated.
D. Check for blockage at suction
and/or jets. Remove blockage and
allow motor to cool.
8. Pump does not
automatically stop after 22
minutes.
A. 20-minute timer inadvertently
disabled.
A. See service manual.
9. Pump won’t turn off
when the power button
on user keypad is
pressed.
A. User keypad does not work. A. Replace user keypad.
B. Control does not work. B. Replace control.
10. Pump operates but
variable speed feature
does not work.
A. Motor/pump does not work. A. Replace motor/pump.
B. Control does not work. B. Replace control.
11. Bath water cools while
pump is operating.
A. Water temperature above 104°F
(40°C).
A. Allow bath water to cool.
Kohler Co. 9 1019460-5-C