CVHE-SB-32A 10
Problem 6: Bearing Temperatures 1 and 2 Locations.
Corrective Action:
1 Bearing temperature I (Stepper module J5-5, 6) goes to the front Journal bearing.
2 Bearing temperature 2 (Stepper module J5-7, 8) goes to the rear Thrust bearing.
Problem 7: Capacity Limited by High Current when the phase current as read from the
Compressor report reads zero amps. Getting this message during the run
mode.
Note: The Chiller module takes the three phase currents as sent by the Starter
module, selects the highest one and limits based on this.
Corrective Action:
1 Check the phase currents as displayed in the Compressor Report.
2 Check the Active Current Limit Setpoint. It is possible it is a very low value or even zero amps
is loaded in.
3 If the current limit source is the external current limit setpoint, check this input on the Options
module.
Problem 8: Current Overload
Corrective Action:
1 Correctly program in the overload information in the machine configuration menu.
2 Defective CTs.
3 Check CT wiring and polarity.
4 Check for the correct number of turns through the CTs.
Problem 9: Chiller Loss of Communication with Circuit module and IGV overdriving close.
Corrective Action:
1 IPC to Circuit module disconnected or reversed.
2 Circuit module not powered.
3 Verify that a good ground exists between all modules including the CLD that needs a
dedicated green wire ground.
Problem 10: Check Clock (lFW) Informational Warning Diagnostics. On a loss of power, the
clock does not keep time if there is an extended power loss (greater than 15 sec-
onds).
Corrective Action:
This diagnostic is shown in active diagnostic menu.
Note: If you clear this IFW diagnostic while the machine is running, you will shut
down the unit. Wait to clear the diagnostic when the unit is off.
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