Troubleshooting Nidec Selectech Series Ecm Motors; If The Motor Is Running; If The Motor Is Not Running; Figure 11 Motor Connections - Bard W24HY-A Installation Instructions Manual

Troubleshooting Nidec SelecTech
Series ECM Motors

If the Motor Is Running

1. It is normal for the motor to rock back and forth
TROUBLESHOOTING GE X13-SERIES ECM2.3
on start up. Do not replace the motor if this is the
only problem identified.
NOTE: Bard Models PA13242; PA13302; PA13362-A, -B; PA13422-A, -B, -C; PA13482-A, -B, -C; PA13602-A, -B, -C
2. If the system is excessively noisy, does not appear
contain the X13-Series Motors.
If the Motor is Running to change speeds in response to a demand (Heat,
Cool, Other) or is having symptoms during the
1. It is normal for the motor to rock back and forth on start up.
Do not replace the motor if this is the only problem identified.
cycle such as tripping limit or freezing coil, check
2. If the system is excessively noisy, does not appear to change
the following:
speeds in response to a demand (Heat, Cool, Other), or is having
A. Wait for programmed delays to time out.
symptoms during the cycle such as tripping limit or freezing coil,
check the following:
B. Ensure that the motors control inputs are
a. Wait for programmed delays to time out.
wired as shown in the factory-supplied wiring
b.Ensure that the motors control inputs are wired to the factory
diagram to ensure motor is getting proper
supplied wiring diagram to insure motor is getting proper
control signals and sequencing. control signals and sequencing.
c. Remove the filter and check that all dampers, registers, and
C. Remove the filter and check that all dampers,
grilles are open and free flowing. If removing the filters
registers and grilles are open and free flowing.
corrects the problem, clean or replace with a less restrictive
If removing the filters corrects the problem,
filter. Also check and clean the blower wheel or coil as
necessary.
clean or replace with a less restrictive filter.
d.Check the external static pressure (total of both supply and
Also check and clean the blower wheel or coil
return) to insure that you are within the ranges as listed on the
as necessary.
unit serial plate. If higher than allowed, additional duct work
is needed.
D. Check the external static pressure (total of
both supply and return) to ensure it is within
the range as listed on the unit serial plate. If
↓
L2 LINE EARTH
POWER GROUND
NOTE: MOTOR IS CONSTANTLY
POWERED BY LINE VOLTAGE
Manual 2100-790
Page 34 of 49
Manual 2100-467H
FIGURE 11
Motor Connections
FIGURE 10
↓
L1 LINE
POWER
higher than allowed, additional duct work is
needed.
E. If the motor does not shut off at the end of the
cycle, wait for any programmed delays to time
out (no more than 90 seconds). Also make
sure that there is no call for "Continuous Fan"
on the "G" terminal.
F. If the above diagnostics do not solve the
e. If the motor does not shut off at the end of the cycle, wait for
problem, confirm the voltage checks in
any programmed delays to time out (no more than 90
the next section below, then continue with
seconds). Also make sure that there is no call for
the "Model SelecTech Communication
"Continuous Fan" on the "G" terminal.
f. If the above diagnostics do not solve the problem, confirm the Diagnostics".
voltage checks in the next section below, then continue with

If the Motor Is Not Running

the "Model X13 Communication Diagnostics".
1. Check for proper high voltage and ground at the
If the Motor is Not Running
(L/L1) (G) (N/L2) connections at the motor (see
1. Check for proper high voltage and ground at the (L/L1) (G) (N/
Figure 11). Correct any voltage issues before
L2) connections at the motor (see Figure 10). Correct any voltage
proceeding to the next step. The SelecTech motor
issues before proceeding to the next step. The X13 Motor is voltage
specific. Only the correct voltage should be applied to the proper
is voltage specific. Only the correct voltage should
motor. Input voltage within plus or minus 10% of the nominal 230
be applied to the proper motor. Input voltage
VAC is acceptable.
within plus or minus 10% of the nominal line
2. If the motor has proper high voltage and ground at the (L/L1)
power VAC is acceptable.
(G) (N/L2) connections, then continue with the "Model X13
Communication Diagnostics". 2. If the motor has proper high voltage and ground at
the (L/L1) (G) (N/L2) connections, then continue
to "Model SelecTech Communication Diagnostics".
LINE
POWER
GROUND
LINE
POWER
™ MOTORS