Trane LO - Manual (Page 115)

UNT-IOM-6 115
Table 52. Zone Temperature Too Cool
Probable Cause
Explanation
Active Heating/Cooling Setpoints Verify that the active heating/cooling setpoints are reasonable. It is
possible for either the zone sensor or for the Tracer ® system to
send heating and cooling setpoints to the TUC. Use the Tracer ®
system or Everyware™ software to determine which source is
sending the setpoint.
Wiring Verify the wiring of all end devices, such as valves and dampers. Use
the manual overrides or the autocycle test to verify the operation of
these end devices.
Manual Cool Mode If the Tracer ® system places the TUC in manual cool mode, the TUC
Sent by Tracer ® cannot switch to heat mode and therefore cannot provide heating to
the zone.
Location of the Zone Sensor Locate the zone sensor in an area where the temperature is represen-
tative of the average zone temperature.