Curtis ALP3GT32A000 [5/8] Heating issues
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Curtis ALP3GT32A000 [5/8] Heating issues

Curtis ALP3GT32A000 [5/8] Heating issues
Service & Sales
1-800-421-6150
www.wilburcurtis.com
Check the voltage at the power block, it
should read: L1-N = 120v, N-G = 0v.
Check the voltage at the reset thermostat, it
should read 120v.
Check the voltage at the toggle switch, it
should read 120v.
Verify 120v between pins #8 and #16 on
molex connector at UCM.
If all steps were taken and the unit still does
not turn on, replace the UCM.
Check if the panel breaker is turned on. If it
is, proceed to STEP 2.
Check the voltage at the receptacle it should
read: L1-N = 120v, N-G = 0v. Proceed to
STEP 3 if accurate.
Check if the power cord is properly con-
nected to the receptacle. If it is, proceed to
STEP 4.
Check the toggle switch if it is in the ON
position. If it is ON, proceed to STEP 5.
1
5
2
3
6
7
POWER ISSUES
The unit will not turn on:
4
8
9
HEATING ISSUES
i
Verify 120 volts between #2 & #4 on both
sides of the Manual Reset Thermostat.
If no, reset or replace the Manual Reset
Thermostat.
Verify 120 volts across the Toggle Switch.
If no, replace the toggle switch.
Verify 120 volts across the Heating Ele-
ment. If yes, replace the Heating Element.
If no, verify 120 volts between the Triac
gate, Neutral, and L1. If yes, replace the
Triac, if no, replace the UCM.
Verify that the panel breaker is turned on
and the receptacle has 120 volts. If not,
consult an electrician.
Not heating:
Overheating/Steaming:
LCD reads “Heating”
Yes:
Yes:
Yes:
No:
LCD reads “Heating”
Verify that the resistance on the Temperature
Sensor is less than 10k ohms with a hot tank
(200+ degrees) If no, verify correct mounting
and that the walls of the tank are free of miner-
al deposits. If yes, bypass the sensor using a
jumper with a 5k ohm resistor. If the LCD reads
“ready” and the unit stops heating, replace the
temperature sensor, if not, replace the UCM.
LCD reads “Ready to Brew”
Check the triac for continuity across A1 & A2,
if continuity is present, replace the triac, if no
continuity, replace UCM.
Ensure that the temperature is adjusted to compensate
for high elevation. The factory setting is 200 degrees.
The temperature setting will need to be reduced Two
degrees for every One Thousand feet of elevation.
TROUBLESHOOTING INSTRUCTIONS
WARMER ISSUES
No power to any warmer:
Verify correct programming: (Model number).
Verify 120v at heating element.
Yes: Replace heating element.
No: Verify that the connections and wirings
are good. If OK, replace UCM.
Not heating:
Ensure proper resistence value on the heating
element between 140-170 ohm.
Ensure wiring is not shorted to ground.
Replace UCM.
Constantly hot, even when turned off:

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