9. Fault finding the product
9.1 Fault finding table
Fault: The pump does not start.
Status
Cause
Remedy
"Power On" LED on the pump
control panel is not lit.
The pump is not connected to
the power supply.
Make sure the power supply is
switched on.
Check if external protection has
tripped.
Make sure the cables and
connections are free from
defects and connected securely.
The "Power On" LED on the
pump control panel is green. The
"Pump Operation" LED is red.
The pump is in an alarm state.
Contact your local Grundfos
representative.
The "Power On" LED on the
pump control panel is green, but
the pump does not start when
the push-button is activated.
If the "Pump Operation" LED on
the pump control panel is yellow,
the pump has timed out.
Wait until the yellow "Pump
Operation" LED turns off.
The push-button is not paired
with the pump.
Follow the pairing procedure for
the push-button.
The push-button batteries need
replacing.
Replace the batteries in the
push-button.
The push-button is out of range.
Use the Repeater HWR-D
accessory to increase the range
of wireless signals.
After installing the repeater, the
"Power On" LED on the pump
control panel is green, but the
pump does not start when the
push-button is activated.
The push-button is out of range,
and the pump does not receive
the repeater's wireless signal.
Relocate the repeater within the
house for optimum range of
wireless signals.
Fault: The "Connect" LED is flashing blue continuously.
Status
Cause
Remedy
The "Connect" LED on the pump
control panel is flashing blue.
The temperature sensor has
been disconnected from the
pump.
The temperature sensor is out of
range.
Ensure the temperature sensor
is in proximity to the pump.
The temperature
sensor batteries need replacing.
Replace the batteries in the
temperature sensor.
The temperature sensor is not
working.
Replace the temperature
sensor. Follow the pairing
procedure for the new
temperature sensor.
Fault: There is noise in the hydraulic system.
Status
Cause
Remedy
There are no indicators lit on the
pump or accessories.
Air in the system.
Open a faucet or tap to let
trapped air escape.
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English (US)
