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Symptom
Water reaches 180°F (82°C) but
does not last through the entire
dishwasher operation.
The booster heater does not heat
at all or only delivers water at
120°–150°F (49°–66°C).
Form No. EBOOSTERBWM-1009
Probable Cause
Low incoming water temperature.
Incoming water temperature drops.
Flow pressure is too high.
Booster water heater may be
undersized.
Incorrect voltage.
Unit may have been energized
without water (dry fired).
Fuses may be blown or circuit
breaker tripped.
Over-current fuses may be blown.
Temperature
setting
calibration or inoperable.
Contactors do not pull in.
High limit switch may be tripped or
defective.
Transformer not working properly.
Low water cutoff inoperable,
contacts do not close.
15
TROUBLESHOOTING GUIDE
Corrective Action
Incoming water temperature must be adequate
for booster size. Increase incoming water
temperature.
Primary water supply is not adequate to provide
correct temperature in sufficient quantities.
Increase supply of primary hot water.
Higher pressure uses an excessive quantity of hot
water. Adjust flow pressure to 20 psi (138 kPa).
Booster water heater must be sized properly for
incoming
water
requirements of the dish machine.
Check voltage on heater serial plate and make
sure supplied voltage matches. A 240 V booster
water heater operating on 208 V reduces wattage
to 76% of the normal output.
This will cause the elements to burn out quickly.
Replace the element(s).
Check for proper fuse sizing. Replace fuses.
Check/reset circuit breaker.
Contact Authorized Service Agent or Bradford
White for assistance.
out
of
Temperature
of 190°F (88°C).
Contact Authorized Service Agent or Bradford
White for assistance.
Reset switch. If switch continues to trip or cannot
be reset contact an Authorized Service Agent.
Contact Authorized Service Agent or Bradford
White for assistance.
Contact Authorized Service Agent or Bradford
White for assistance.
temperature
and
setting
should
be
maximum
rinse
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