Tempstar central air conditioner troubleshooting

PROBLEMPOSSIBLE CAUSESOLUTION
Unit/System Does Not Work• The circuit breaker has tripped or a fuse has blown.• Reset the circuit breaker or replace the fuse with the specified replacement fuse.
• Power failure.• Restart operation when the power is restored.
• Diagnostic lights illuminate.• Call your service representative.
• Voltage is too low.• Call your service representative.
Cooling is Not Working Properly• The filter is blocked with dust.• Clean the air filter.
• Temperature is not set properly.• Check the temperature and reset if necessary.
• A window or door is open.• Close the window or door.
• The outdoor unit is obstructed.• Remove the obstruction.
• The fan speed is too low.• Change the fan speed selection.
• The operation mode is in Fan instead of Cool.• Change the operating mode to Cool or reset the unit.
Heating is Not Working Properly• The filter is blocked with dust.• Clean the air filter.
• Temperature is set too low.• Check the temperature and reset if necessary.
• A window or door is open.• Close the window or door.
• The outdoor unit is obstructed.• Remove the obstruction.
Unit Stops During Operation• The Off timer is not operating correctly.• Restart the operating mode.
• Diagnostic lights illuminate.• Call your service representative.