Bryant 5200 owner manual Troubleshooting

7 TROUBLESHOOTING

7 TROUBLESHOOTING cont .

SYMPTOM	POTENTIAL SOLUTION
Thermostat does not	Check to see if OFF is shown in display. This indicates that the
turn on heating or	system is turned off at the thermostat. Move the system
cooling system.	selector switch to the HEAT or COOL position. After the
	compressor short cycle protection 5-minute period expires the
	system should start within a minutes time.
	Compressor protection features may be in effect due to
	compressor short cycle conditions. See Compressor Protection
	section for full explanation of this feature.
	Heat Pump may be malfunctioning. Review the CHECK status
	indicator light to see if it is lit. If the CHECK status indicator light
	is lit, call a professional service technician to confirm heat pump
	operation and provide necessary service. If heating is required
	you can slide the system switch to EMER setting which will start
	the Emergency Heat source to provide heating until the heat
	pump can be serviced.
Thermostat turns on	Check thermostat wiring to make sure that the heating and
heating instead of	cooling stages are connected to the correct terminals on the
cooling.	wiring terminal block. See Installation and Wiring Diagrams
	sections of this manual.
Thermostat turns on	Check thermostat wiring to make sure that the heating and
cooling instead of	cooling stages are connected to the correct terminals on the
heating.	wiring terminal block. See Installation and Wiring Diagrams
	sections of this manual.
Thermostat will not	Check current time of day, day of week program settings. Make
follow program	sure to verify AM/PM indicator is accurately displaying desired
setpoints.	time settings. See Setting Current Time of Day and Day of Week
	section of this manual.
	Check to see if OFF is shown in display. This indicates that the
	system is turned off at the thermostat. Move the system
	selector switch to the HEAT or COOL position. After the
	compressor short cycle protection 5-minute period expires the
	system should start within several seconds.
	Verify your program setpoint time entries. The heating and
	cooling programs utilize the same setpoint times, but have
	individual setpoint temperatures for the MORN, DAY, EVE and
	NIGHT setpoints. See Setting Your Energy Saving Program
	section of this manual.
	Thermostat program has been temporarily overridden and
	program indicator is flashing in the display. Wait till next
	setpoint and the temporary override will expire or change
	setpoint temperature to desired comfort level.
	Thermostat program is in Permanent Hold (Vacation) Mode and
	HOLD and TEMP is showing in display. Press HOLD button to
	release permanent hold and return the thermostat to normal
	program operation.
Thermostat turns	Increase or decrease first stage temperature differential setting
heating or cooling	as appropriate to provide the desired performance level. See
system on too often	Setting Temperature Differential and Residual Cooling Fan
	Feature section of this manual.
or not often enough.

SYMPTOM

Thermostat turns on second (auxiliary) stage of heating or cooling too quickly or not quickly enough.

Low Battery Indicator is shown in thermostat display.

OFF is shown in thermostat display and heating or cooling system will not start.

Thermostat display is blank.

Thermostat will not allow me to program

asetpoint temperature higher than 90˚ F (32˚ C).

HI is shown in the thermostat display where the room temperature is normally displayed.￿

POTENTIAL SOLUTION

Increase or decrease second (auxiliary) stage temperature differential setting as appropriate to provide the desired performance level. See Setting Temperature Differential and Residual Cooling Fan Feature section of this manual.

Replace back-up batteries as soon as possible.

See Low Battery Detection and Replacement section of this manual.

This indicates that the system is turned off at the thermostat. Move the system selector switch to the HEAT or COOL position. After the compressor short cycle protection 5-minute period expires the system should start within several seconds.

It is possible that AC power is not present at the thermostat and the back-up batteries are fully discharged. Check fuse, circuit breaker and thermostat wiring as appropriate to verify AC power is available. Replace back-up batteries before re-programming thermostat to make sure you have back-up power. See Low Battery Detection and Replacement and Setting Your Energy Saving Program sections of this manual.

If AC Power is present, call a professional service technician to verify thermostat and system performance.

This is above the normal thermostat temperature setting range of 45˚ to 90˚ F (7˚ to 32˚ C).￿

The temperature sensed by the thermostat is higher than the 99˚ F (37˚ C) upper limit of the thermostats display range. The display will return to normal after the sensed temperature lowers within the 40˚ to 99˚ F (5˚ to 37˚ C) display range. Turn on the cooling system or use other methods to lower the temperature accordingly.

This condition could occur from the system being turned off during an exceptionally warm period or upon installation when the thermostat has been stored for a long period of time in a warm vehicle or location prior to being installed. The thermostat is equipped with a mechanical high temperature safety switch that will turn off the system should the temperature exceed 99˚ F (37˚ C).

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