I arrived for a customer we recently installed a condenser and coil for. The issue now is the thermostat is flashing a code. We called and I arrived for a service call but the homeowner in not home and they did not answer their phone. I left a card on the door by the doorbell camera. I will be placing this call on pause for now. I spoke with the homeowner and found that the thermostat is flashing. I explained that when the thermostat flashes itâ€™s in a time delay and the system will still come on and run after the flashing stops.