Hayward Variable Speed Pump Technical Guide - Page 48

Warning NO Comm

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Troubleshooting/Fault Codes Code/Fault Indications Warning NO Comm Inspect the data wire between the interface and drive. Disconnect the wires from the display and re-connect. If the error has not been eliminated, check the Diagnostic Menu. If the values are at "0" replace the interface. If the values are correct, replace the drive. EcoStar is connected to a GL/Hayward control. When it comes on, the pump will ramp up and down in speed. Control reads "Pool bridge comm" This indicates interference on the comm. ground between the control and EcoStar. This is caused by frequency noise emitted from the pump drive. It travels on the comm. ground and AC ground wire and interferes with the commands being sent from the control. Install RS485 isolator, or new interface v2.55 rev. 1.1. Contact Clemmons Tech Service for isolator. The breaker is tripping. Check input wiring and breaker. Disconnect Blue, Black, and Red motor leads (page 4) from drive. If still tripping breaker, replace drive. If not, replace motor. Page 46

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Troubleshooting/Fault Codes
Code/Fault
Indications
Warning NO Comm
Inspect the data wire between the interface and drive.
Disconnect the wires from the display and re-connect.
If the
error has not been eliminated, check the Diagnostic Menu.
If the
values are at “0” replace the interface.
If the values are correct,
replace the drive.
EcoStar is connected to a
GL/Hayward control.
When it comes on, the
pump will ramp up and
down in speed.
Control
reads “Pool bridge comm”
This indicates interference on the comm. ground between the
control and EcoStar. This is caused by frequency noise emitted
from the pump drive. It travels on the comm. ground and AC
ground wire and interferes with the commands being sent from
the control. Install RS485 isolator, or new interface v2.55 rev.
1.1. Contact Clemmons Tech Service for isolator.
The breaker is tripping.
Check input wiring and breaker. Disconnect
Blue
,
Black
, and
Red
motor leads (page 4) from drive. If still tripping breaker,
replace drive. If not, replace motor.
Page 46