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Troubleshooting Guide
Raychem-IM-H57548-HWATsystem-EN 16/08
Symptom
Probable Causes
Corrective Action
Low water temperature
Insulation is wet, or missing.
HWAT-ECO controller lowered the pipe
setpoint temperature because water heater is
cold.
Ambient too low.
Improper voltage applied.
Improper insulation thickness used.
HWAT-ECO or ACS-30 was set incorrectly.
Cold water is being introduced into the hot
water system.
Tripped circuit breaker
Remove wet insulation and replace with dry insulation, and secure it
with proper weatherproofing.
Verify the HWAT-ECO water heater setting, water heater
temperature, and sensor placement; and correct as required.
Set the HWAT-ECO or ACS-30 to the appropriate ambient
temperature.
Refer to the HWAT-ECO Installation and Operation Manual (H57340)
to set the HWAT-ECO to the correct voltage (208 or 240 Vac)
Contact your Pentair Thermal Management representative to
confirm the design and modify as recommended.
Refer to the HWAT-ECO Installation and Operation Manual (H57340)
or ACS-30 Programming Guide (H58692) for the correct settings.
Verify that the plumbing fixtures and valves are operating properly.
See "Circuit breaker trips" section of this Troubleshooting Guide.
Symptom
Probable Causes
Corrective Action
Low or no power output
Low or no input voltage applied.
The circuit is shorter than the design
shows, due to splices or tees not being
connected, or the heating cable having
been severed.
Improper component connection
causing a high-resistance connection.
HWAT-ECO or ACS-30 set wrong or
incorrectly wired.
The heating cable has been exposed to
excessive temperature, moisture or
chemicals.
Repair the electrical supply lines and equipment.
Check the routing and length of heating cable (use “as built”
drawings to reference actual pipe layout). Connect all splices or
tees. Locate and replace any damaged heating cables. Then
recheck the power output.
Examine RayClic connection kits for proper installation. Check for
loose wiring connections and rewire if necessary.
Refer to the HWAT-ECO Installation and Operation Manual
(H57340) or ACS-30 Programming Guide (H58692) for the correct
settings.
Check the pipe temperature. Verify heater selection. Check the
power output of the heating cable per the design vs. actual.
Reduce pipe temperature if possible or contact your Pentair
Thermal Management representative to confirm design.
Replace damaged heating cable. Check the pipe temperature.
Check the power output of heating cable.
