beautypg.com

Fig. 8b electronic control board and triac, Triac assy electronic control board, H 10 h 5 – Bunn DV User Manual

Page 8

background image

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

No

Yes

Yes

Yes

Yes

No

No

No

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

?

Overflow

?

Retry

Drain cup

Yes

Yes

No

H5E, H5X LIQUID LEVEL CONTROL

PROBLEM: Overflows

Unplug Ready Lamp

Retry

Retry

Drain cup

Drain cup

Short Probe Wire

To Chassis

Disconnect Probe

Wire From Probe

Disconnect Wire From

Solenoid Valve

Replace Ready Lamp

No

Replace Probe

Overflow

?

Yes

Replace Control Board

No

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

SVLJPD[RSHUDWLQJSUHVVXUH

6WUDLQHU)ORZ&RQWURO

5HSO)ORZ:

D

VKHU

5HSO6FUHHQ

JSP)/2:

Triac Assy

Electronic
Control Board

P1991-1.30

FIG. 8b ELECTRONIC CONTROL

BOARD AND TRIAC

H 10

H 5