Trane TAYSTAT 540 manual Troubleshooting Guide, Symptom Possible Cause Action

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TROUBLESHOOTING GUIDE


Symptom	Possible Cause	Action

Display will not	Thermostat is not	Check if the thermostat is mounted and
come on.	being powered.	latched on the wallplateÐmount and latch the
		thermostat on the wallplate.
		Check if the circuit breaker is trippedÐreset
		the circuit breaker.
		Check if the fuse is blownÐreplace the fuse.
		Check if the system switch is in the Off
		positionÐset to Heat or Cool.

Temperature	The upper or lower	Check that the temperature setpoints are
settings will not	temperature limits	within range:
change (Example:	were reached.	Heating: 50° to 99° F (10° to 37° C)
cannot set the		Cooling: 50° to 99° F (10° to 37° C).
heating higher or the
cooling lower).

		(Contiuned)

	Pub. No. 22-5185-01
21	69-1229

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Contents Programmable Heat-Pump Thermostat Weekends FeaturesSET Temporary Programming Your Thermostat Setting the Current Day and TimeOrganizing Your Schedule Pub. No Leave Customizing Your Weekday Schedule Customizing Your Weekend Schedule Setting the Weekday Program Press Select. Press or to set Wake temperature Press Select. Press or to set Leave temperature Setting the Weekend Program M17318 M17321 Return to ., Setting the Week Temporary Temperature HoldIndefinite Temperature Hold System SettingSystem and Fan Fan Setting Auxiliary Heat Emergency HeatMinimum Off-Timing Symptom Possible Cause Action Troubleshooting GuideTroubleshooting Contiuned Symptom Possible Cause Action Troubleshooting Contiuned Symptom Possible Cause Action Low Voltage Room Thermostats Limited WarrantyCustomer Assistance Pub. No Pub. No Troup Highway