Maverick Wireless Remote Smoker Thermometer "temperature transmitte" Questions

...on it reads HHH If the receiver and/or the transmitter display LLL or HHH instead of the probe temperature, wait for probe to reach room temperature. If LLL or HHH is still displayed it is

...and smoker probe in place. But my remote receiver just keeps blinking lines and will not show the temperature. I have put new batteries in both. Help please?? Try turning off both units, then power ...