Honeywell T8001 Owner's Manual - Page 16

Troubleshooting Symptom Display does not come on. Temperature settings do not change (example: cannot set the heating higher or the cooling lower). 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 switch at the equipment is in the Off position-set to the On position. • Check if the batteries are good and installed correctly (T8002 only). • Check that the temperature setpoints are: between 40 to 99°F (4 to 37°C). continued 16 69-1431-1