Hatco Imperial S Series Installation And Operating Manual page 29

English
Symptom
Relief valve dribbles.
Relief valve opens.
High temperature limit safety
switch trips.
Chattering contactor or low water
cutoff circuit board
Heating element(s) burn out.
Troubleshooting Questions?
If you continue to have problems resolving an issue, please
contact the nearest authorized Hatco Service agency or Hatco
for assistance. To locate the nearest Service agency, log onto
the Hatco website at www.hatcocorp.com and click on
Find Service Agent, or contact the Hatco Parts and Service
Team at:
Telephone: 800-558-0607 or 414-671-6350
e-mail: partsandservice@hatcocorp.com
Fax: 800-690-2966 or 414-671-3976
Form No. EBOOSTERm-0613
Probable Cause
No pressure reducing valve installed or
incorrect valve installed causing pressure
build-up inside booster tank.
Bypass in pressure reducing valve may be
blocked.
Check valve or anti-siphon valve installed in
the feed line.
Unit is overheating.
Contactor may be sticking in closed position
not allowing unit to cycle off.
Temperature limit safety switch is defective. If booster heater is not overheating, replace
Thermostat set too high.
Incoming water temperature too high
causing nuisance tripping
temperature limit switch.
Loose connections or wire connection has
insulation under crimp.
Low voltage.
Probe may be fouled.
Contactor(s) may be bad.
Tank inadvertently drained
element(s) in a dry condition.
Lime buildup in tank causing element(s) to
split and burn out.
TROUBLESHOOTING GUIDE
a pressure reducing valve with high pressure
bypass must be installed in the incoming water
line to allow water to expand back into the feed
line.
Clean bypass or replace with new valve with
built in bypass.
Remove check valve or anti-siphon valve to
allow for water expansion or install a back
pressure relief valve (P/N 03.02.039.00) on the
incoming water line.
Thermostat may be set too high or is sticking.
Recalibrate or replace the thermostat.
Replace contactor(s).
High Limit Safety Switch.
adjust or recalibrate, refer to "Thermostat
adjustment" in the maINTENaNCE section.
Incoming water temperature should not be
of high higher than 160°F (71°C).
Tighten all connections and check crimps
Check control circuit voltage or secondary
voltage with transformer.
Bypass probe by removing wire from low water
cutoff probe and grounding to tank. Clean or
replace probe if chattering stops.
Test contactor coils and replace if needed.
leaving Replace element(s), and make sure tank is full
of water at all times. Check low water cut-off
system for proper operation.
Replace element(s), and clean or delime tanks
periodically. a water softener or blended
phosphate treatment system may be required.
29
Corrective Action