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).
Disconnect wire from probe terminal. With a voltmeter, check voltage at the water inlet
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.
POSSIBLE CAUSE
SOLUTION
3. Grounded probe
4. Defective water level control
board
TROUBLE SHOOTING CONTINUED:
PROBLEM:
WATER DOES NOT FLOW INTO HEATING TANK.
PROBLEM:
WATER HEATING TANK OVERFLOWING.
POSSIBLE CAUSE
SOLUTION
Turn power off and observe water level. If water continues to flow into the heating tank,
clean or replace leaky valve.
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.
Liquid level control board must be securely grounded through the back of the board
and the mounting bracket. Check for loose connections at the terminals. Check for
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.
1. Defective water inlet valve
2. Probe limed-up
3. Non-grounded or loose terminal
connections at liquid level
control board
POSSIBLE CAUSE
SOLUTION
1. Thermostat turned
OFF
(or not fully ON).
2. Defective thermostat
3. Defective Contactor
Check thermostat to make sure the shaft is rotated fully clockwise until it stops.
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.
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.
PROBLEM:
WATER IN TANK DOES NOT REACH PROPER TEMPERATURE
[ 4 ]
C1000AP & C1000APT Airpot Brewer
