Wilbur Curtis GEM-120A - Manual (Page 4)

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POSSIBLE CAUSE SOLUTION
TROUBLE SHOOTING
Open the water line and make sure water flows to the brewer.
Turn off brewer. Disconnect wires from water inlet coil terminals and
connect a power cord to the terminals. Plug cord into a 110v outlet
and verify that water flow when plugged in and stops when cord
is disconnected. If valve does not respond to this test, replace the
valve.
When water in the heating tank is below the probe tip, yet water is
not refilling, pull the wire off the probe terminal. If water starts flow-
ing into the tank, find ground, clean or replace the probe.
Pull the wire from the probe terminal. With a volt meter, check the
voltage at the water inlet coil terminals. This should read 110 to
115 volts. If no voltage is present, check the water level control
board. Make sure that the back of the board is grounded securely
to the mounting bracket. Check for loose wire connections. Replace
board.
1. Water line turned off or
filter clogged up.
2. Water inlet valve coil
burned out.
3. Grounded probe.
4. Defective or burned out
water level control board.
PROBLEM: WATER IN TANK DOES NOT GET HOT OR WATER TEMPERATURE TOO LOW
POSSIBLE CAUSE
SOLUTION
8. Thermostat is off.
Check the thermostat to make sure it is in the ON position. Turn the
thermostat stem clockwise until it stops.
9. Burned out heating
element.
Check element for continuity and/or check with clamp ammeter. This
should show a reading of approximately 15 amps. If no power is go-
ing through element, replace it.
PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK
POSSIBLE CAUSE SOLUTION
Turn power off and observe the water level in the heating tank. If
water continues to flow in, clean or replace the valve.
Pull wire off from probe terminal. Touch the water tank shell with
the terminal at the end of this wire. If water stops flowing, clean or
replace the probe.
If probe is okay, check the water level control board. The water level
control board must be securely grounded. Check for loose connec-
tions. Check for voltage at the inlet valve terminals. Replace board.
5. Defective water inlet
valve.
6. Probe limed up.
7. Loose or ungrounded
water level control board.
PROBLEM: WATER IN HEATING TANK OVERFLOWING
GEMINI 120A