Honeywell T7200D Product Data page 24

T7200D,E, T7300D,E,F AND Q7300 SERIES 2000 PROGRAMMABLE COMMERCIAL THERMOSTATS AND SUBBASES
Symptom
Display will not come Thermostat is not being powered.
on.
Temperature display is Room temperature display has
incorrect. been reconfigured.
Thermostat is configured for °F or
°C display.
Bad thermostat location.
Display shows two dashes and a
degree sign.
Upper or lower temperature limits
Temperature settings
were reached.
will not change.
(Example: Cannot
set heating higher or
The setpoint temperature range
cooling lower.)
stops were configured.
Keypad is locked. When a locked
key is pressed, LOC will flash on
the LCD.
Unable to configure Installer Setup is locked out
Installer Setup
Temperature settings Trying to set heating and cooling
change from original setpoints too close together. There
setting. is a deadband in automatic
changeover thermostat models.
Example: cool setpoint=72,
deadband=3, heat setpoint=68,
changing heat setpoint to 70 will
automatically change the cool
setpoint to 73.
Room temperature is Remote temperature sensing is
out of control. not working.
Heating will not come No power to the thermostat.
on.
63-4355—1
Table 14. Troubleshooting Information.
Possible Cause
• Check that X terminal is connected to the system transformer.
• Check for 24 Vac between X and R or RH terminals.
Enter Installer Setup number 37 and reconfigure the display.
Enter Installer Setup number 14 and reconfigure the display.
Relocate the thermostat.
Installer Setup 22 is set for remote sensing and the sensor is
missing or the circuit is open or shorted.
Check the temperature setpoints:
• Heating limits are 40 to 90°F (7 to 31°C)
• Cooling limits are 45 to 99°F (9 to 37°C)
Check Installer Setup number 34 and 35 and reconfigure the
setpoint stops.
• Reset DIP switch 1 on back of thermostat to enable keypad.
• Enter Installer Setup number 25 or 40 and reconfigure keypad
Reset the DIP switch 1 on back of thermostat to enable keypad.
• Check that the heating setpoint is lower than the cooling
• Check Installer Setup number 30 to identify the deadband
Checkout all remote sensors.
• Check that X terminal is connected to the system transformer.
• Check for 24 Vac between X and R or RH terminals.
24
Action
— If missing 24 Vac:
— check if the circuit breaker is tripped—reset the circuit
breaker.
— check if the system fuse is blown—replace the fuse.
— check if the power switch on the HVAC equipment is
in the Off position—set to the On position.
— check wiring between thermostat and HVAC
equipment—replace any broken wires and tighten any
loose connections.
— If 24 Vac is present, proceed with troubleshooting.
lockout level.
setpoint.
between heating and cooling setpoints. Reconfigure if
desired.
— If missing 24 Vac:
— check if the circuit breaker is tripped—reset the circuit
breaker.
— check if the system fuse is blown—replace the fuse.
— check if the system switch at the equipment is in the
Off position—set to On position.
— check wiring between thermostat and HVAC
equipment—replace any broken wires and tighten any
loose connections.
— If 24 Vac is present, proceed with troubleshooting.
(Continued)