Taco Comfort Solutions 0018e-SF4, Instruction Sheet

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CAUTION: 

Do not attempt to remove LED panel from circulator. Serious damage to circulator electronics may result.

ATTENTION:

 N’essayez pas de retirer le panneau de LED du circulateur. Des dommages sérieux à l’électronique  

du circulateur peuvent en résulter.

FAULTS

CONTROL PANEL

CAUSES

REMEDIES

The circulator

is noisy

LED on

Suction pressure is

insufficient — cavitation

Increase the system suction pressure 

within the permissible range.

LED on

Presence of foreign bodies

in the impeller

Disassemble the motor

and clean the impeller.

Loud noises of

water circulation

Flashing 

white LED

Air in the system. 

Pump may be air-bound

Vent the system. Repeat

fill and purge steps.

LED on

The flow is too high

Reduce the pump speed.

Circulator is not running 

although the electrical

power supply is

switched on

LED off

Lack of power supply

Verify voltage value of the electric plant. 

Verify the connection of the motor.

One fuse in the

installation is blown

Verify the fuses of the pump.

The circulator is defective

Replace the pump.

Overheating

Let the pump cool down for some 

minutes. Then try to re-start it. Verify that 

the water and ambient temperature are 

within the indicated temperature ranges.

LED red

The rotor is blocked

Disassemble the motor and clean the 

impeller. See unlocking procedure below.

Insufficient supply voltage

Verify that the power supply

matches the data on the 

name plate.

Building does

not get warm.

LED on

The circulator performance

is too low

Increase the suction head.

Increase speed or P setting.

7.  Troubleshooting the error codes: 

Listed below are potential diagnostic error codes which will appear on the  

  LED display in case of a malfunction.

Unlocking Procedure: 

A red light in the LED indicates the circulator rotor is blocked or sticking. Turn the selector to the position 

MAX, disconnect and connect power supply to start the automatic release process. The circulator makes 100 attempts to restart 

(process lasts approximately 15 minutes). Every restart is signalled by a short flash of white LED light. If the blocking is not removed 

through the automatic release process after 100 attempts to restart, the circulator goes into standby and the LED remains solid red. 

Perform the manual unblocking steps described below.

1.   Disconnect power supply - the warning light switches off.
2.   Close both isolating valves and allow cooling. If there are no shut-off devices,  

  drain the system so that the fluid level is beneath that of the circulator.
3.   Loosen 4 motor bolts. Remove motor from casing. Carefully pull the rotor/impeller from the motor.
4.   Remove impurities and deposits from the impeller and casing.
5.   Reinsert the rotor/impeller into the motor.
6.   Set the dial to the MAX position.
7.   Connect power supply. Check for impeller rotation.
8.   If the circulator still doesn’t run it will need to be replaced.