Bunn H5M User Manual
Page 8
8
TROUBLESHOOTING (cont.)
Problem
Probable Cause
Remedy
Water boils continuously.
Dispenser is making unusual
noises.
Ready indicator will not light.
(when temperature is within 4
°
of its selected setting.)
1. Temperature control
2. Lime build-up
1. Solenoid valve
2. Plumbing lines
3. Water supply
1. Temperature control
2. Ready Indicator LED
Refer to Service – control thermostat for
testing procedures. See page 14.
Inspect the tank assembliy for excess lime
deposits. Delime as required.
The nut on top of the solenoid valve must
be tight or it will vibrate during operation.
Plumbing lines should not be resting on the
counter top.
(A) The dispenser must be connected to a
cold water line.
(B) Water pressure to the dispenser must
not be higher than 90 psi (620 kPa). Install
a regulator if necessary to lower the work-
ing pressure to approximately 50 psi (345
kPa).
Refer to Service – control thermostat for
testing procedures. See page 14.
Replace the indicator LED.
CAUTION – Tanks and tank components should be delimed reglarly depending on local water conditions. Exces-
sive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious leaks.
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