Bryant air conditioner occasionally shuts off and thermostat goes blank, then comes back after a short time.

Safety first: Turn off power to the indoor unit before accessing the control compartment.

Steps:

• 1. Inspect thermostat wiring: At the furnace/air handler and thermostat, ensure all low-voltage wires are firmly attached and not shorting against metal.
• 2. Check transformer connections: Verify that the 24V transformer primary and secondary connections on the Bryant control board are tight.
• 3. Look for shorts: Inspect the cable to the outdoor unit for damage from lawn equipment or animals. Repair any nicks or cuts.
• 4. Monitor operation: If the thermostat continues to drop out, the transformer or control board may be failing and should be tested/replaced by a technician.