Regal genteq ECM, Руководство по обслуживанию

Страница: 54 / 58

51
Check for proper high voltage and ground. Using
the OEM schematics, locate the L1, L2, and
Ground connections and confirm voltage is 208-
230 10%. Correct any voltage issues, worn or
broken connections.
This motor is energized and de-energized with
communication inputs. Model variations include
Single Speed 24VAC communication, Multi-speed
24VAC communication and Single or Multi-speed
PWM communication. See example figures
on p52. Using the OEM schematic, identify the
communication type and check for proper voltage.
PWM taps are diagnosed with DC voltage
specified by the HVAC unit OEM.
If the motor IS NOT receiving any
communication,
troubleshoot the communication
issue using the manufacturer’s troubleshooting
guides. The control board in the outdoor unit
will need the proper demand call (low voltage
or communication) from the indoor controls to
provide the proper communication to the motor.
Confirm these demand(s) are there before
checking the communication to the motor.
If the motor IS receiving proper
communication (and proper high voltage power)
and is not running, proceed to the next section on
Motor Replacement.
1.
2.
IF THE MOTOR IS NOT RUNNING
This motor uses a 5 or 6 wire harness with wire
colors specified by the OEM. Therefore the OEM
schematic for the particular unit you are working on
will be necessary to identify motor connections on
the system controls.