Bunn H10X Manuel D’Utilisation

10

•

Is circuit board popped out of bracket?

•

Is circuit board wet due to misaligned overflow
tube?

•

Is water in overflow cup activating float switch?

•

Is overflow cup not making good contact with tank?

•

Is dispenser being operated with panels removed?

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Triac Assy

Electronic
Control

P1991

FIG. 1 ELECTRONIC CONTROL AND TRIAC

Location:

The electronic control assembly is located inside

the side of the dispenser.  Access will also be needed
to the temperature sensor, overflow tube temperature
sensor, and liquid level probe located on the tank lid
and to the triac assembly located on the inside of the
rear wall.

General:

This system controls the liquid level and water tem-

perature of the dispenser.  These two functions act in-
dependently of each other and should be tested sepa-
rately.

Voltage present at

Solenoid Valve

?

Voltage present at

Solenoid Valve

?

Overflow Cup Full

?

Remove Power

Disconnect Level Probe

Retry

Drain cup

No

Yes

Yes

Yes

Yes

No

No

No

Does Water Flow

?

Replace Probe

Replace Control Assembly

Replace Solenoid Valve

Unplug P2 from Circuit Board

Repair shorted wires 
       leading to P2.

Overflow

?

Overflow

?

Retry

Drain cup

Yes

Yes

No

Unplug P2 from Circuit Board

Retry

Retry

Drain cup

Drain cup

Short Probe Wire

To Chassis

Disconnect wire from 

Refill Probe

Disconnect Wire From

Solenoid Valve

Repair shorted wires 

leading to P2

No

Replace Probe

Overflow

?

Yes

Replace Control Assembly

No

Replace Solenoid Valve

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