Bunn TB3 User Manual

Page 10

Brew cycle will not start (cont.) 

Water is not hot

Dilution cycle will not start

4. ON/OFF Switch

5. Start Switch

6. Brew Timer

7. Brew Solenoid Valve

8. Internal Flow control  (.195 
GPM)

1. Limit Thermostat
CAUTION - Do not eliminate or 
bypass limit thermostat or thermal 
cut-off. Use only BOM replacement 
part  29329.0001

2. Control Thermostat

3. Tank Heater

1. ON/OFF Switch

2. Start Switch

3. Dilution Timer

Refer to Service - ON/OFF Switch 
for testing. See page 24

Refer to Service - Start Switch for 
testing procedures. See page 23  

Refer to Service -  Brew Timer for 
testing procedures. See page 18

Refer to Service - Brew Solenoid 
Valve for testing procedures. See 
page 16

(A) Direction of fl ow arrow must be 
pointing towards check valve.

(B) Remove the fl ow control and 
check for obstructions. Clear or 
replace.

Refer to Service - Limit Thermostat 
for testing procedures. See page 
22 

Refer to Service  - Control Ther-
mostat for testing procedures. See 
page 17

Refer to Service - Tank Heater for 
testing procedures. See page  27

Refer to Service - ON/OFF Switch 
for testing procedures. See page 
24

Refer to Service - Start Switch for 
testing procedures. See page 23

Refer to Service - Dilution Timer for 
testing procedures. See page 21

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