Bunn FMD-5 - Manual (Page 10)

10
TROUBLESHOOTING (cont.)
PROBLEM
Water is not hot (Cont.)
Spitting or excessive steaming
Dripping from dispense tip
Water flows into tank continuously
PROBABLE CAUSE
4. Tank Heater Switch
5. Relay (120V versions only)
6. Control Board #2 (120V versions
only)
1. 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 corro-
sive reactions resulting in serious
leaks.
2. Control Thermostat
1. 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 corro-
sive reactions resulting in serious
leaks.
2. Dispense Solenoid Valve
1. Control Board #1 and Probe
2. Solenoid Valve (Inlet)
REMEDY
Refer to Service - Tank Heater Switch
for testing procedures. See page 39
Refer to Service - Relay for testing
procedures. See page 40
Refer to Service - Control Board #2
for testing procedures. See page 22
Inspect the tank assembly for exces-
sive lime deposits. Delime as re-
quired.
Refer to Service - Control Thermo-
stat for testing procedures. See
page 19
Inspect the tank assembly for exces-
sive lime deposits. Delime as re-
quired.
Remove the dispense solenoid valve
and clear any obstructions. Rebuild
or replace the valve if necessary. See
page 35
Refer to Service - Control Board and
Probe for testing procedures. See
page 20
Refer to Service - Solenoid Valve
(Inlet) for testing procedures. See
page 37
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