D 07 Troubleshooting TACd2/n2 fans
Contents
1. D 07 Troubleshoot GB doc 4 8 P LEMMENS Compose TAC2 troubleshooting rev1 P5 Procedure The fan starts but does not stop when soft stop contact is opened There is an initialization problem 1 Verify the soft stop contact is effectively open beep contacts 3 and 6 or to be really sure remove all the connections on these terminals Make corrections according to findings 2 If contact is effectively open the problem comes from a bad contact on the 12Vdc line between the PB and the CB Replace PB f problem persists replace CC RJ45 between CB and PB f problem persists replace CB P6 Procedure The fan starts then stops soft stop contact is open and LEDs 1 and 2 are blinking There is an initialization failure expressed by the following blinking sequence between LEDs 4x 1x 1 Verify on the fan identification label if the fan is a Generation2 fan example DD 9 9 ECM2 1 2 or DD 9 9 TAC2 1 2 If this is not the case the CB is not fitted for the fan Replace the CB by a version fitted for the fan or the other way around The CB and the fan have to be compatible 2 If you have a generation fan verify if the idcode 720xxx on the fan s label is the same idcode as the one specified on the QC label placed on the motor f they are different there is a programming error Replace the fan f they are the same the program and the fan are compatibl2. to the maximum available pressure for the requested airflow 1 Control your measurements for example measurement on the wrong terminals bad contact on the terminals when measuring measurement in Vac instead of Vdc Voltmeter failure 2 Wait for minimum 2 minutes between the startup of the fan and your measurements in order to allow the fan to settle to its working point 3 Verify the dip switch setting corresponds to the requested airflow for the installed fan 4 After having verified the dip switches are well positioned and waited the 2 minutes replace the control box P13 Procedure The initialization is correct When closing the soft stop contact terminal 3 and 6 the fan has started but the airflow doesn t seem to be correct Calculate the system s airflow using 0 4 5V output signal between G and 7 The result is inferior to the requested airflow Calculate then the system s pressure using 0 4 5V output signal between G and 8 It is on the envelope of the fan The fan is too weak for the application Check the system s counter pressure try to reduce it if not possible select a stronger fan P14 Procedure The initialization is correct When closing the soft stop contact terminal 3 and 6 the fan has started but the airflow doesn t seem to be correct Calculate the system s airflow using 0 4 5V output signal between G and 7 The result is corresponding to the requested airfl
3. 5x 1x 6x 1x 10x 1x start blinking Close the soft stop contact 3 6 Alarme1 LED 1 lit D 07 Troubleshoot GB doc 2 8 R LEMMENS Compose TAC2 troubleshooting rev1 Is the airflow OK Yes Initialize alarm2 pressure Yes Press SW2 LED 1 lights up for 2 to 3 minutes Yes LED 1 and 2 start blinking Yes TACd2 Troubleshoot procedure can also be used as Start up procedure 2 2 Measure voltage between G 7 and G 8 Vdc convert to airflow No and pressure or use Viewer Signal G 7 Corresponds to requested airflow Signal G 8 gt Max pressure for requested airflow No Yes Yes No Fan rotating at No very low speed Yes Fan is working properly Set DeltaP with dip switches 6 to 8 D 07 Troubleshoot GB doc 3 8 P LEMMENS Compose TAC2 troubleshooting rev1 TACd2 Troubleshoot procedure Startup procedure P1 procedure The voltage measure shows the power box is not energized 1 Verify the wiring diagram and power supply 2 Verifiy if the electrical protection has not triggered If yes verify its specifications compared to the product specifications see installation manual TACd2 9 TACn2 7 P2 Procedure After de re connecting the RJ45 cable between PB and CB the fan should execute an initialization run before stopping LEDs 1 and 2 should not be blinking If this do
4. P LEMMENS Compose TAC2 troubleshooting rev1 D 07 Troubleshooting TACd2 n2 fans Introduction TAC fans use a lot of electronic components And unfortunately TAC fans sometimes have typical problems related to this technology and thus don t function properly But as of today we have gathered sufficient statistics to establish that the very largest part of the installation problems come from misreading or ignorance of the user s manual Statistics on 10 000 installed fans Problem Misreading or Installation calls ignorance of Motor PB RJ45 CC CB the manual 10 000 866 794 3 42 4 23 100 91 7 0 35 4 8 0 46 2 6 So before calling in for help or even reading the troubleshoot procedure re check the following 4 easy to follow steps Re read the installation manual Is the power supply present Did you wire the softstop start setup properly Are all your physical connection made properly BROWN If you have done this then use this troubleshoot procedure to locate the problem Setup and abbreviations CCRJ45 CB ae w JY D 07 Troubleshoot_GB doc 1 8 R LEMMENS Compose TAC2 troubleshooting rev1 TACd2 n2 Troubleshoot procedure can also be used as Startup procedure 1 2 Open soft stop contact 3 6 unplug replug RJ45 connection 230V on power box LEDs 1 and 2 start blinking Fan Stops by himself LEDs 1 and 2 4x 1x
5. apacity or the fan hasn t settled to the requested airflow yet 1 Be sure to have waited for at least 2 minutes between the starting of the fan and pressure initialization procedure 2 Reduce the system s counter pressure or reduce the requested airflow request Otherwise replace the fan by a stronger one 3 If you cannot do anything you ll have to work without pressure alarms Unplug Replug the RJ45 CC to reinitialize the setup P17 Procedure The initialization is correct When closing the soft stop contact terminal 3 and 6 the fan has started but the airflow is correct After having pressed on SW2 to initialize a reference pressure LEDs 1 and 2 start blinking This means there is a reference pressure initialization problem The following blinking sequence between LEDs appear 8x 1x This means the system is functioning in an unstable working zone the computations are impossible 1 Be sure to have waited for at least 2 minutes between the starting of the fan and pressure initialization procedure 2 Modify the working point to enter a stable working zone 3 If you cannot do anything you ll have to work without pressure alarms Unplug Replug the RJ45 CC to reinitialize the setup If several fans are installed we advize to swap components to determine which component could be defect D 07 Troubleshoot GB doc 8 8
6. e Replace the power box If the problem persists replace the RJ45 CC between PB and CB If the problem persists replace the CB If the problem still persists replace the fan P7 procedure The fan starts then stops soft stop contact is open and LEDs 1 and 2 are blinking There is an initialization failure expressed by the following blinking sequence between LEDs 5x 1x Replace the PB verify if one of control wire on the motor connector is not damaged If the problem persists replace the RJ45 CC between PB and CB If the problem persists replace the CB 1 2 3 4 If the problem still persists replace the fan YS wr Ww D 07 Troubleshoot GB doc 5 8 P LEMMENS Compose TAC2 troubleshooting rev1 P8 procedure The fan starts then stops softstop contact is open and LEDs 1 and 2 are blinking There is an initialization failure expressed by the following blinking sequence between LEDs 6x 1x The CB does not contain the fan s data Replace the CB by a more recent version P9 procedure The fan starts then stops soft stop contact is open and LEDs 1 and 2 are blinking There is an initialization failure expressed by the following blinking sequence between LEDs 10x 1x 1 Replace the fan 2 If the problem persists replace the CB P10 procedure The initialization is correct When closing the soft stop contact term
7. es not occur there is an initialization problem 1 Verify that the RJ45 cable between CB and PB is well plugged and not damaged 2 Measure Vdc between terminals G and 6 f voltage 0 Vdc Replace power box If problem persists replace CC RJ45 between PB and CB If problem still persists replace CB f voltage 12 Vdc the fan should start Restart procedure from beginning and verify that the fan starts even for a short time before stopping If yes go to the next step P3 Procedure After de re connecting the RJ45 cable between PB and CB the fan should execute an initialization run before stopping LEDs 1 and 2 should not be blinking If this does not occur there is an initialization problem If the blinking sequence between LED 1 and 2 is one of these 1x 1x 2x 1x 3x 1x 9x 1x there is an alteration of the data in the CB The CB should be replaced P4 procedure After de re connecting the RJ45 cable between PB and CB the fan should execute an initialization run before stopping LEDs 1 and 2 should not be blinking If this does not occur there is an initialization problem If the blinking sequence between LED 1 and 2 is 5x 1x Replace the PB verify if one of the control wires on the motor side is not damaged If problem persists replace RJ45 CC between PB and CB If problem persists replace CB 1 2 3 4 If problem persists replace fan YS wr WH
8. inals 3 and 6 the fan doesn t start and LED 1 is off The soft stop contact is not closed beep contacts 3 and 6 or to be really sure remove all the connections on these terminals Make corrections according to findings 1 The fan starts the problem is then due to this connection Make appropriate corrections It is compulsory to use gold contacts 2 lf the fan still does not start with the jumper between terminals 3 and 6 Replace the CB f the problem persists replace the fan P11 procedure The initialization is correct When closing the soft stop contact terminals 3 and 6 the fan doesn t start and LED 1 is off The problem then comes from the control line between the CB and the PB or comes from the motor Replace the PB If the problem persists replace the RJ45 CC between PB and CB If the problem persists replace the CB If the problem persists replace the fan YS wr wa 1 2 3 4 D 07 Troubleshoot GB doc 6 8 P LEMMENS Compose TAC2 troubleshooting rev1 P12 Procedure The initialization is correct When closing the soft stop contact terminal 3 and 6 the fan has started but the airflow doesn t seem to be correct Calculate the system s airflow using 0 4 5V output signal between G and 7 The result is different than the requested airflow Calculate then the system s pressure using 0 4 5V output signal between G and 8 It is inferior
9. ow The fan is running gt 100 RPM The fan is delivering the requested airflow The error is in the on site measurement If the airflow is insufficient change the airflow request by changing the dip switches accordingly P15 Procedure The initialization is correct When closing the soft stop contact terminal 3 and 6 the fan has started but the airflow doesn t seem to be correct Calculate the system s airflow using 0 4 5V output signal between G and 7 The result is corresponding to the requested airflow The fan is running gt 100 RPM even though the system s pressure is as designed AHU doors are closed ducting is connected The problem comes either from the control line between PB and the fan either from the motor Replace the PB If problem persists replace RJ45 CC between PB and CB 1 2 3 If problem persists replace CB 4 If problem persists replace fan D 07 Troubleshoot GB doc 7 8 P LEMMENS Compose TAC2 troubleshooting rev1 P16 Procedure The initialization is correct When closing the soft stop contact terminal 3 and 6 the fan has started but the airflow is correct After having pressed on SW2 to initialize a reference pressure LEDs 1 and 2 start blinking This means there is a reference pressure initialization problem The following blinking sequence between LEDs appear 7x 1x The pressure is too high for the fan s c
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