Problem 75: Tracer Diagnostics E.g.,Tracer Loss Of Comm With Options, Starter, Etc. As Well As Other Tracer Related Diagnostics; Problem 76: Unit Tons Read-Out On Cld Does Not Work; Problem 77: Unknown Diagnostics 1217 Informational Warning - Trane CVHE Troubleshooting Manual

Problem 75: Tracer Diagnostics e.g.,Tracer loss of comm with options, starter, etc. as well
as other Tracer related diagnostics.
1 Check the IPC wiring connections on the related module with diagnostics.
2 Check tracer to UCP wiring/connections.
3 Make sure the Tracer module is installed, wired correctly and powered up.
4 Set the chillers ICS to match Tracer. Check the Tracer dip switch settings: Tracer Comm 3
should be: "OFF OFF OFF" and Tracer Comm 4 should be: "OFF ON OFF"

Problem 76: Unit Tons Read-out on CLD does not work.

Corrective Action:
1 On the original design up to mid-1998 (with the reversing solenoid valve and plastic piping):
~ Verify that the condenser solenoid is connected to the condenser.
~ Verify that the entering port of the solenoid goes to the entering water line.
~ Verify that the leaving port of the solenoid goes to the leaving water line.
~ With the solenoid de-energized, the entering water line is monitored.
~ Verify that the Evaporator Solenoid is connected to the evaporator.
2 With the new electronic version mid-1998 on (does not have the reversing valve or plastic
piping): reference Trane Service Bulletin CVHE-CSB-45B.
~ Check for fault transducer.
~ Check y-strainer.
~ Check wiring.
~ Check coefficients in the service settings menu.
~ For an open system, follow special procedures in Trane CVHE-CSB-45B

Problem 77: Unknown diagnostics 1217 informational warning.

Corrective action:
1 You have a newer Chiller and Starter module and an OLD clear language display (CLD).
Install a new CLD to read the diagnostics.
CVHE-SB-32A 29