Bunn Beverage Dispenser FMD-5 User Manual

Page of 71
7
TROUBLESHOOTING (cont.)
PROBLEM
Product will not dispense (cont.) 
Water is not hot
PROBABLE CAUSE
7. Level Control Board and Probe - 
FMD-1
8. Control Board
9. Overflow Protection Switch
10. Auger Drive  
11. Water Strainer
12. Lime build-up
CAUTION - Tank and tank compo-
nents should be delimed regularly 
depending on local water conditions. 
Excessive mineral build-up on stain-
less steel surfaces can initiate cor-
rosive reactions resulting in serious 
leaks.
13. Transformer
14. Rinse Cycle Not Run
1. Limit Thermostat
CAUTION - Do not eliminate or by-
pass limit thermostat. Use only BOM 
replacement part #29329.1000
2. Control Thermostat 
3. Tank Heater
REMEDY
Refer to Service - Level Control Board 
and Probe for testing procedures. 
See page 41
Refer to Service - Control Board and 
Probe for testing procedures. See 
page 20
Refer to Service  - Overflow Protec-
tion Switch. See page 44
Refer to Service  - Auger Drive. See 
page 14
(A) Direction of flow arrow must be 
pointing towards dispenser.
(B) Remove the strainer and check for 
obstructions. Clear or replace.
Inspect the tank assembly for ex-
cessive lime deposits. Delime as 
required.
Refer to Service - Transformer for 
testing procedures. See page 40
Refer to Cleaning for running a Rinse 
Cycle.
Refer to Service - Limit Thermostat 
for testing procedures. See page 
43  
Refer to Service - Control Thermostat 
for testing procedures. See page 
26 
Refer to Service - Tank Heater for 
testing procedures. See page 50
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