Instructions / Assembly

7 Troubleshooting
7.1 Display messages
WARNING:
Maintenance and service must be performed by skilled and
qualified personnel only.
Description LED display Action
Standby State: Pump is powered
and ready to run.
0.75 sec off / 0.1 sec white
0.75 sec off / 0.1 sec blue
—
The pump is running normal. Continuously lit blue, green, or
white, depending on the pump
operating mode. See Modes of
operation on page 18.
—
Air purge function is active. 0.75 sec off / 0.1 sec on, mode-
dependent color
—
Voltage or overtemperature error 1 sec on / 1 sec off, mode-
dependent color
Check the power supply. Let the
pump cool and restart.
Overcurrent error
Start error
Position sensing error
0.2 sec on / 0.2 sec off, mode-
dependent color
Check for foreign objects
blocking the pump rotor. See
Disassemble the pump on page
20.
Offset error 0.4 sec off / 0.2 sec on
0.4 sec off / 0.4 sec on
mode-dependent color
Electronics board is defective.
Non-serviceable.
7.2 The pump is noisy
Description Reason Action
The pump is making a loud
noise.
The pump is not thoroughly
vented.
See Preparation for startup on
page 18.
There are foreign objects in the
pump.
See Disassemble the pump on
page 20.
The bearing is worn out. Replace the pump.
7.3 Excessive ambient temperature
In order to protect the electronics from temperatures that are dangerously high,
the electronic control system monitors its own temperature.
• If the temperature is too high, the pump speed is automatically reduced.
• If the temperature rises above safety limit, the pump will shut itself off.
• The pump will automatically restart after cooling down.
7 Troubleshooting
ecocirc
®
19-16 INSTRUCTION MANUAL 21