Instruction Manual

Form No. EBOOSTERM-0321
23
English
TROUBLESHOOTING GUIDE
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, select the Support pull-
down menu, and click on “Find A Service Agent”; or contact the Hatco Parts and Service Team at:
Telephone: [phone] or 414-671-6350
e-mail: [e-mail]
Symptom Probable Cause Corrective Action
Relief valve dribbles. No pressure reducing valve installed or incorrect
valve installed causing pressure build-up inside
booster tank.
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.
Bypass in pressure reducing valve may be blocked. Clean bypass or replace with new valve with built in bypass.
Check valve or anti-siphon valve installed in the
feed line.
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.
Relief valve opens. Unit is overheating. Thermostat may be set too high or is sticking. Recalibrate or
replace the thermostat.
Contactor may be sticking in closed position not
allowing unit to cycle off.
Replace contactor(s).
High temperature limit
safety switch trips.
The error indicator light is
illuminated.
Temperature limit safety switch is defective. If booster heater is not overheating, replace High Limit
Safety Switch.
Thermostat set too high. Adjust or recalibrate, refer to “Thermostat Adjustment” in the
MAINTENANCE section.
Incoming water temperature too high causing
nuisance tripping of high temperature limit switch.
Incoming water temperature should not be higher than
160°F (71°C).
Chattering contactor or low
water cutoff circuit board
Loose connections or wire connection has
insulation under crimp.
Tighten all connections and check crimps
Low voltage. Check control circuit voltage or secondary voltage with
transformer.
Probe may be fouled. Bypass probe by removing wire from low water cutoff probe
and grounding to tank. Clean or replace probe if chattering
stops.
Contactor(s) may be bad. Test contactor coils and replace if needed.
Heating element(s) burn
out.
Tank inadvertently drained leaving element(s) in a
dry condition.
Replace element(s), and make sure tank is full of water at all
times. Check low water cut-off system for proper operation.
Lime buildup in tank causing element(s) to split
and burn out.
Replace element(s), and clean or delime tanks periodically.
A water softener or blended phosphate treatment system
may be required.