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TROUBLESHOOTING CONSTANT TORQUE ECM MOTORS
IF THE MOTOR IS RUNNING
1. It is normal for the motor to rock back and forth
on start up. Do not replace the motor if this is the
TROUBLESHOOTING GE X13-SERIES ECM2.3
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.
to change speeds in response to a demand (Heat,
If the Motor is Running
Cool, Other) or is having symptoms during the
1. It is normal for the motor to rock back and forth on start up.
cycle such as tripping limit or freezing coil, check
Do not replace the motor if this is the only problem identified.
the following:
2. If the system is excessively noisy, does not appear to change
a. Wait for programmed delays to time out.
speeds in response to a demand (Heat, Cool, Other), or is having
b. Confirm that the motors control inputs are
symptoms during the cycle such as tripping limit or freezing coil,
wired per the factory supplied wiring diagram
check the following:
to ensure motor is getting proper control
a. Wait for programmed delays to time out.
b.Ensure that the motors control inputs are wired to the factory
signals and sequencing.
supplied wiring diagram to insure motor is getting proper
c. Remove the filter and check that all dampers,
control signals and sequencing.
registers and grilles are open and free flowing.
c. Remove the filter and check that all dampers, registers, and
If removing the filters corrects the problem,
grilles are open and free flowing. If removing the filters
clean or replace with a less restrictive filter.
corrects the problem, clean or replace with a less restrictive
Also check and clean the blower wheel or coil
filter. Also check and clean the blower wheel or coil as
necessary.
as necessary.
d.Check the external static pressure (total of both supply and
d. Check the external static pressure (total of
return) to insure that you are within the ranges as listed on the
both supply and return) to ensure that you are
unit serial plate. If higher than allowed, additional duct work
within the ranges as listed on the unit serial
is needed.
plate. If higher than allowed, additional duct
work is needed.
↓
L2 LINE
EARTH
POWER
GROUND
NOTE: MOTOR IS CONSTANTLY
POWERED BY LINE VOLTAGE
Manual 2100-628
Page
20 of 24
FIGURE 10
MOTOR HIGH VOLTAGE CONNECTIONS
FIGURE 10
↓
L1 LINE
POWER
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
problem, confirm the voltage checks in the
e. If the motor does not shut off at the end of the cycle, wait for
next section below, then continue with the
any programmed delays to time out (no more than 90
"Communication Diagnostics" on the following
seconds). Also make sure that there is no call for
page.
"Continuous Fan" on the "G" terminal.
f. If the above diagnostics do not solve the problem, confirm the
IF THE MOTOR IS NOT RUNNING
voltage checks in the next section below, then continue with
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 10). Correct any voltage issues before
L2) connections at the motor (see Figure 10). Correct any voltage
proceeding to the next step. The motor is voltage
issues before proceeding to the next step. The X13 Motor is voltage
specific. Only the correct voltage should be
specific. Only the correct voltage should be applied to the proper
applied to the proper motor. Input voltage within
motor. Input voltage within plus or minus 10% of the nominal 230
VAC is acceptable.
plus or minus 10% of the nominal 230 VAC is
2. If the motor has proper high voltage and ground at the (L/L1)
acceptable.
(G) (N/L2) connections, then continue with the "Model X13
2. If the motor has proper high voltage and ground at
Communication Diagnostics".
the (L/L1) (G) (N/L2) connections, then continue
with the "Communication Diagnostics" on the
following page.
™
MOTORS
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