Figure 20 Motor Connections - Bard W24G4 Installation Instructions Manual

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
higher than allowed, additional duct work is
TROUBLESHOOTING GE X13-SERIES ECM2.3
needed.
E. If the motor does not shut off at the end of the
NOTE: Bard Models PA13242; PA13302; PA13362-A, -B; PA13422-A, -B, -C; PA13482-A, -B, -C; PA13602-A, -B, -C
cycle, wait for any programmed delays to time
contain the X13-Series Motors.
out (no more than 90 seconds). Also make
If the Motor is Running
sure that there is no call for "Continuous Fan"
1. It is normal for the motor to rock back and forth on start up.
on the G terminal.
Do not replace the motor if this is the only problem identified.
2. If the system is excessively noisy, does not appear to change
F. If the above diagnostics do not solve the
speeds in response to a demand (Heat, Cool, Other), or is having
problem, confirm the voltage checks in the
symptoms during the cycle such as tripping limit or freezing coil,
next section below, then continue with the
check the following:
a. Wait for programmed delays to time out. Model SelecTech Communication Diagnostics.
b.Ensure that the motors control inputs are wired to the factory
If the Motor Is Not Running
supplied wiring diagram to insure motor is getting proper
control signals and sequencing.
1. Check for proper high voltage and ground at the L/
c. Remove the filter and check that all dampers, registers, and
L1, G, N/L2 connections at the motor (see Figure
grilles are open and free flowing. If removing the filters
20). Correct any voltage issues before proceeding
corrects the problem, clean or replace with a less restrictive
filter. Also check and clean the blower wheel or coil as
to the next step. The SelecTech motor is voltage
necessary.
specific. Only the correct voltage should be
d.Check the external static pressure (total of both supply and
applied to the proper motor. Input voltage within
return) to insure that you are within the ranges as listed on the
plus or minus 10% of the nominal line power VAC
unit serial plate. If higher than allowed, additional duct work
is acceptable.
is needed.
↓
L2 LINE EARTH
POWER GROUND
NOTE: MOTOR IS CONSTANTLY
POWERED BY LINE VOLTAGE
Manual 2100-721B
Page 40 of 54
Manual 2100-467H
Page 22 of 23
FIGURE 20
Motor Connections
FIGURE 10
↓
L1 LINE
POWER
2. If the motor has proper high voltage and ground at
the L/L1, G, N/L2 connections, then continue with
the Model SelecTech Communication Diagnostics.
Model SelecTech Communication Diagnostics
The SelecTech motor is communicated through 24 VAC
low voltage (thermostat control circuit wiring).
1. Start with unit wiring diagram to confirm proper
e. If the motor does not shut off at the end of the cycle, wait for
connections and voltage (see Figure 21). any programmed delays to time out (no more than 90
seconds). Also make sure that there is no call for
2. Initiate a demand from the thermostat and
"Continuous Fan" on the "G" terminal.
f. If the above diagnostics do not solve the problem, confirm the check the voltage between the common and the
voltage checks in the next section below, then continue with
appropriate motor terminal (1-5). (G input is
the "Model X13 Communication Diagnostics".
typically on terminal #1, but always refer to wiring
diagram.)
If the Motor is Not Running
1. Check for proper high voltage and ground at the (L/L1) (G) (N/
A. If the low voltage communication is not
L2) connections at the motor (see Figure 10). Correct any voltage
present, check the demand from the
issues before proceeding to the next step. The X13 Motor is voltage
thermostat. Also check the output terminal
specific. Only the correct voltage should be applied to the proper
and wire(s) from the terminal strip or control
motor. Input voltage within plus or minus 10% of the nominal 230
VAC is acceptable.
relay(s) to the motor.
2. If the motor has proper high voltage and ground at the (L/L1)
B. If the motor has proper high voltage (verified
(G) (N/L2) connections, then continue with the "Model X13
in Step 1 of If the Motor Is Not Running),
Communication Diagnostics".
proper low voltage to a programmed terminal
and is not operating, the motor is failed and
will require replacement.
LINE
POWER
GROUND
LINE
POWER
MOTORS
™