Kohler K-812-H2 manual Troubleshooting

Troubleshooting (cont.)

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

Kohler Co. 9 1019460-5-C