Wibur Curtis Company C1000APT Trouble Shooting, Problem Water Heating Tank Overflowing

C1000AP & C1000APT Airpot Brewer

TROUBLE SHOOTING CONTINUED:

PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK.

POSSIBLE CAUSE		SOLUTION
3.	Grounded probe	When the water level gets below the probe tip, water should automatically refill the tank.
		If not, pull wire off the probe terminal. Water should now start flowing into the tank. If not,
		check the water level control board (see step 4) or inlet valve (step 2).
4. Defective water level control		Disconnect wire from probe terminal. With a voltmeter, check voltage at the water inlet
	board	coil terminals. This should read 110-120 volts. If no voltage is present, check liquid level
		control (L.L.C.) board. Make sure the L.L.C. board is supplied by 120V across terminals
		T2 & T3. The L.L.C. board is grounded to the chassis of the machine by contacting the
		board to the mounting bracket. Make sure board is grounded here. Check for loose con-
		nections at terminals. Replace board.
PROBLEM: WATER HEATING TANK OVERFLOWING.
POSSIBLE CAUSE		SOLUTION
1.	Defective water inlet valve	Turn power off and observe water level. If water continues to flow into the heating tank,
		clean or replace leaky valve.
2.	Probe limed-up	Disconnect wire from probe terminal. Touch the body of the heating tank with the
		terminal at the end of this wire. If water stops, try cleaning the probe. Probe may have
		to be replaced.
3. Non-grounded or loose terminal		Liquid level control board must be securely grounded through the back of the board
	connections at liquid level	and the mounting bracket. Check for loose connections at the terminals. Check for
	control board	voltage across the inlet valve terminals. If there is 110 to 120 volts present at the inlet
		valve terminals when water level is touching the probe tip, replace the L.L.C. board.
PROBLEM: WATER IN TANK DOES NOT REACH PROPER TEMPERATURE
POSSIBLE CAUSE		SOLUTION
1.	Thermostat turned OFF	Check thermostat to make sure the shaft is rotated fully clockwise until it stops.
	(or not fully ON).
2.	Defective thermostat	Replace thermostat if contacts are open when shaft is fully clockwise and water temper-
		ature is less than 190º F. You will measure 120 volts (approximately) to ground from both
		thermostat terminals when it is ON and from only one terminal when it is OFF.
3.	Defective Contactor	Measure the voltage across the coil terminals of the contactor. If you read 110/120V, but
		the contacts remain open, the coil is burned out. Replace it.

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