Troubleshooting - Trane Pivot BAYSTAT814 Series Installation, Operation And Maintenance Manual

Smart thermostat
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Troubleshooting

Symptom
Pivot thermostat displays an alert code on the
screen.
Display will not come on
Indoor temperature display is incorrect.
Indoor humidity display is incorrect.
Heating will not come on.
Cooling will not come on.
Heating or Cooling is displayed, but no warm or
cool air is coming from the registers.
Blower runs all the time
Blower is set to ON but not running.
Cooling or Heating cycles too fast or too slow
(narrow or wide temperature swings).
42
Possible causes
A critical or major alert is present
Loss of 24 Vac between R & B at the Pivot
thermostat
1.
Indoor temperature display needs calibration.
2.
Heat from touch screen is being trapped within
the thermostat body.
indoor humidity display needs calibration.
1.
System mode is not set to Heat/Auto or
setpoint is set too low.
2.
Minimum off time delay is being enforced.
3.
Heating system may require service
1.
System mode is not set to Cool/Auto or the
setpoint is too high.
2.
Minimum off time delay is being enforced.
3.
Cooling system may require service.
1.
There is a fan delay as the heating or cooling
equipment turns on.
2.
Equipment is not working properly.
1.
Fan mode is set to On.
2.
Field wiring issue.
3.
There is a failure in the indoor unit.
1.
Humidity control is engaged.
2.
Field wiring issue.
3.
Blower motor is not functioning.
1.
Check the location of the Pivot thermostat for
drafts.
2.
Cycles per hour is improperly set.
Action
Navigate to the Diagnostic screen on the Pivot
thermostat for a Problem Description and Possible
Cause.
1.
Check R & B wiring
2.
Check transformer for 24 Vac output.
3.
Check for broken or shorted thermostat wire.
1.
Calibrate temperature sensor from thermostat
settings or use a remote temperature sensor.
Home > Menu > Settings > Thermostat >
Indoor Calibration > Indoor Temp
2.
Move Pivot thermostat away from competing
air stream or use a remote indoor sensor.
Calibrate humidity sensor from the thermostat
settings.
Home > Menu > Settings > Thermostat > Indoor
Calibration > Humidity
1.
Set mode to heat and raise the setpoint above
the room temperature.
2.
Wait for 5 minutes and recheck heating
equipment.
3.
Check/repair system.
1.
Set mode to cool and lower the setpoint below
the room temperature.
2.
Wait for 5 minutes and recheck cooling
equipment.
3.
Check/repair system.
1.
Wait a minute for blower delays and recheck
registers.
2.
Check/repair system.
1.
Check Pivot thermostat settings to see if fan is
set to On or Clean mode.
2.
Check field wiring.
3.
Check indoor unit for failures (such as tripped
heating limit).
4.
Check configuration.
5.
Blower is interlocked with ventilation.
1.
If indoor humidity is higher than desired
setpoint, the blower will cycle off with the
equipment. A humidity icon will be displayed
on the Fan Mode button when the blower
operation is being inhibited due to high
humidity.
2.
Check field wiring.
3.
Check/repair system.
1.
Seal air leaks behind Pivot thermostat.
Relocate Pivot thermostat or apply remote
indoor temperature sensor.
2.
Adjust cycle rates in the Advanced installer
Setup.
BAS-SVX078E-EN

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