SERVICE (cont.)
Electronic Controls (cont.)
7.Reconnect the pink wire to terminal 5 of the elec- tronic control assembly.
8.Loosen the compression fitting, remove the probe from the tank lid, and inspect it for mineral depos- its. Replace it if necessary. Keep the exposed ends of the probe away from any metal surface of the dispenser.
9.Check the voltage across terminals 1 & 4 of the electronic control assembly with a voltmeter. Con- nect the dispenser to the power source. The indi- cation must be:
a.) 100 to 120 volts ac for 100 to 120 volt models or
b.) 200 to 240 volts ac for 200 to 240 volt models after a delay of approximately 5 seconds.
10.Touch the screw head end of the probe to the dis- penser housing. The indication must be 0.
11.Move the probe away from the dispenser housing. The indication must again be:
a.) 100 to 120 volts ac for 100 to 120 volt models or
b.) 200 to 240 volts ac for 200 to 240 volt models after a delay of approximately 5 seconds.
12.Disconnect the dispenser from the power source.
Temperature Control Flow Charts (cont.)
H5X THERMOSTAT
PROBLEM: Boils Excessively - Fills Cup
If voltage was present as described, reinstall the probe, the sensing function of the system is operating prop- erly.
If voltage was not present as described, check the pink probe wire and the green ground wire for continuity and/or replace the probe.
Temperature Control Test Procedure
1.Disconnect the dispenser from the power source.
2.Check the voltage across terminals 3 & 4 of the electronic control circuit board with a voltmeter. Connect the dispenser to the power source.The in- dication must be:
a.) 100 to 120 volts ac for 100 to 120 volt models or
b.) 200 to 240 volts ac for 200 to 240 volt models.
3.Disconnect the dispenser from the power source.
If voltage was present as described, proceed to #4.
If voltage was not present as described, refer to the Wiring Diagram and check the dispenser wiring har- ness.
4.Connect the dispenser to the power source and place the tank heater switch in the “ON” position.
5.Observe the red indicator on the electronic control circuit board.
6.Disconnect the dispenser from the power source.
H5E THERMOSTAT
PROBLEM: Boils
Drain cup
Retry
Red Light On While
Boiling
?
No
Yes
Replace Steam Sensor
Drain cup
Retry
Red Light On While | Yes |
| |
Boiling |
|
? |
|
No |
|
Replace Control Assembly
Disconnect Blue Wire From
Control Board Pin 7
Retry
Still Boiling
?
No
Finished
Yes
Replace Control Assembly
Disconnect Blue Wire From
Control Board Pin 7
Retry
Still Boiling
?
No
Yes
Replace Triac Assembly
Check For Split
Tank Heater
Still Boiling | Yes |
? |
|
No |
|
Replace Triac Assembly
Check For Split
Tank Heater
Replace Control Assembly
Replace Control Assembly
12 | 10420 011599 |
|
