Bunn STFA, STA, SA service manual TROUBLESHOOTING cont, Problem, Probable Cause, Remedy

Page 8

TROUBLESHOOTING (cont.)

 

 

 

 

PROBLEM

PROBABLE CAUSE

 

REMEDY

Brew cycle will not start (cont.)

3. ON/OFF switch

 

Refer to Service - ON/OFF Switch

(ST, STF, STA & STFA)

 

 

 

for testing. See page 17

 

4.

Start switch

 

Refer to Service - Start Switch for

 

 

 

 

testing procedures. See page 19

 

5.

Timer

 

Refer to Service - Timer for testing

 

 

 

 

procedures. See page 22 or 24

 

6.

Solenoid valve

 

Refer to Service - Solenoid Valve

 

 

 

 

for testing procedures. See page

 

 

 

 

18

 

7.

Strainer/flow control

(.222

(A) Direction of flow arrow must

 

GPM)

 

be pointing towards brewer.

(B) Remove the strainer/flow con- trol and check for obstructions. Clear or replace.

Water is not hot

1. Limit thermostat

 

CAUTION - Do not eliminate or

 

bypass limit thermostat. Use only

 

BOM replacement part #29329.

 

1000.

Refer to Service - Limit Thermo- stat for testing procedures. See page 16

2. Control thermostat

Refer to Service - Control Ther-

 

mostat for testing procedures. See

 

page 14

Inconsistent beverage level in dis- penser

3. Tank heater

1.Strainer /flow control (.222 GPM) (ST, STF, STA & STFA)

Refer to Service - Tank Heater for testing procedures. See page 20

(A)Direction of flow arrow must be pointing towards the brewer.

(B)Remove the strainer/flow con- trol and check for obstruction. Clear or replace.

2. Liquid level board or level probe

Refer to Service - Liquid Level

 

Board for testing procedures. See

 

page 26

Page 8

29251 052500

 

Image 8
Contents POST OFFICE BOX SPRINGFIELD, ILLINOIS FAXBUNN S,SA ST,STA STF,STFAWARRANTY USER NOTICESUSER NOTICES Continued #00656.0000#00882.0000 #02763.0000 #02765.0000 #02769.0000ELECTRICAL REQUIREMENTS PLUMBING REQUIREMENTSElectrical Hook-Up Models S & SAINITIAL SET-UP 4A. Models S & SA4B. Models ST, STA 4C. Models STF & STFACLEANING Models ST, STF, STA & STFA ON/OFF SWITCHSTART SWITCH OPERATING CONTROLSTROUBLESHOOTING TROUBLESHOOTING cont PROBLEMPROBABLE CAUSE REMEDYTROUBLESHOOTING cont PROBLEM Dripping from sprayhead Beverage overflows dispenser cont Weak beverage Brewer is making unusal noises Contents SERVICECOMPONENT ACCESS SERVICE cont CONTROL THERMOSTATSERVICE cont CONTROL THERMOSTAT cont SERVICE cont LIMIT THERMOSTAT ON/OFF SWITCH Models ST, STA, STF & STFA FIG. 8 SOLENOID START SWITCH Models ST, STA, STF & STFA SERVICE cont TANK HEATER SERVICE cont TANK HEATER Cont FIG. 14 BREW TIMER SERVICE cont BREW TIMER Early Modelscont DIGITAL BREW TIMER Late Models FIG. 16 DIGITAL BREW TIMERSERVICE cont DIGITAL BREW TIMER Late Modelscont LIQUID LEVEL CONTROL BOARD Models STF & STFA STFACont SERVICE cont TIMER RELAY Models STF & STFA SERVICE cont WARMER ELEMENTS SERVICE cont THERMAL CUT-OFFModels SA, STA & STFA Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251