Bunn DV User Manual download pdf (Page 8)

SERVICE

Electronic Controls

FIG. 8a ELECTRONIC CONTROL

P4093.35

Voltage present at

Solenoid Valve

Voltage present at

Solenoid Valve

Overflow Cup Full

Remove Power

Disconnect Level Probe

Retry

Drain cup

Yes

H5E, H5X LIQUID LEVEL CONTROL

PROBLEM: Does Not Refill

Does Water Flow

Replace Probe

Unplug Ready Lamp

Replace Ready Lamp

Replace Control Board

Replace Solenoid Valve

Overflow

Retry

Drain cup

Yes

H5E, H5X LIQUID LEVEL CONTROL

PROBLEM: Overflows

Unplug Ready Lamp

Retry

Drain cup

Short Probe Wire

To Chassis

Disconnect Probe

Wire From Probe

Disconnect Wire From

Solenoid Valve

Replace Ready Lamp

Replace Probe

Overflow

Yes

Replace Control Board

Replace Solenoid Valve

Location:

The electronic control board is located inside the

rear of the dispenser. Access will also be needed to the

temperature sensor, overﬂ ow tube temperature sensor,

and liquid level probe located on the tank lid.

General:

This system controls the liquid level and water

temperature of the dispenser. These two functions

act independently of each other and should be tested

separately.

Liquid Level Control Flow Charts

42311 071310

%811

SVLJPD[RSHUDWLQJSUHVVXUH

6WUDLQHU)ORZ&RQWURO

5HSO)ORZ:DVKHU

5HSO6FUHHQ

JSP)/2:

Triac Assy

Electronic

Control Board

P1991-1.30

FIG. 8b ELECTRONIC CONTROL

BOARD AND TRIAC

H 10

H 5

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 23 24

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