Symptom
Cause
Remedy
Pump is noisy
Air in the system
Turn off the ecocirc pump. Turn on the
hot and cold faucets/taps until all air
is purged from the system.
Foreign matter in the rotor cavity
Unplug pump and shut off water
supply. Open faucets/taps and drain
water from the piping. Loosen the
screw ring to separate motor from the
pump housing and check for foreign
matter.
Rotor does not seat properly.
Ensure the rotor is properly set on the
motor bearing by pushing down on
the rotor.
Water hammer that results from the
closure of the built-in check valve.
Install water hammer arresters on the
hot and cold lines.
Hot water is not instantly available at
all faucets/taps
Faucets/taps are branched off from
the main hot water supply line.
Hot water will take longer to reach
branched faucets/taps.
Water temperature at the valve is at
or above the set temperature.
Verify the temperature setting at the
pump.
Hot water source not producing hot
water.
Verify temperature setting at hot
water source.
Verify hot water source operation.
Distance between the pump and
valve is greater than 150 ft (45 m).
Install a signal repeater / push-button
to assist communication between
pump and valve.
Water at faucets/tap is too hot
The temperature setting on the hot
water source is too high.
Adjust temperature setting on hot
water source.
Pump is overheated
Hot water source is generating too
much heat.
Adjust temperature setting on hot
water source.
Ambient temperature is too hot.
Make sure the pump and hot water
source are properly ventilated to
allow cooling.
Pump is overloaded.
See possible causes and remedies
below.
Communication is lost between
pump and valve
Batteries are dead/Low battery
voltage.
Replace batteries.
Incorrect battery orientation.
Verify correct battery orientation.
Distance between the pump and
valve is greater than 150 ft (45m) or
disruptive media interferes with
communication.
Install a push-button / signal repeater
to assist communication between
pump and valve
Troubleshooting
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Installation, Operation and Maintenance
Manual
19