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.

UNT-IOM-6

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Trane LO manual Zone Temperature Too Cool Probable Cause Explanation

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