Troubleshooting Guide - Trane TAYSTAT 540 Owner's Manual

TROUBLESHOOTING GUIDE

Symptom
Display will not
come on.
Temperature
settings will not
change (Example:
cannot set the
heating higher or the
cooling lower).
Possible Cause
Thermostat is not
being powered.
The upper or lower
temperature limits
were reached.
Action
Check if the thermostat is mounted and
latched on the wallplate–mount and latch the
thermostat on the wallplate.
Check if the circuit breaker is tripped–reset
the circuit breaker.
Check if the fuse is blown–replace the fuse.
Check if the system switch is in the Off
position–set to Heat or Cool.
Check that the temperature setpoints are
within range:
Heating: 50 to 99 F (10 to 37 C)
Cooling: 50 to 99 F (10 to 37 C).
21
(Contiuned)
Pub. No. 22-5185-01
69-1229