Webjun 19, 2024 · when the honeywell pro series thermostat heat on light is flashing, it indicates a system malfunction. Troubleshoot by checking the thermostat settings and. Webhaving trouble with your honeywell thermostat? Browse honeywell home’s library of thermostat troubleshooting resources and guides. Webfeb 22, 2022 · learn why the cool on, heat on, snowflake, or flame is blinking on your thermostat device at the honeywell home support and resource center. Webaug 29, 2022 · why is my thermostat display showing “wait,” “waiting for equipment,” or flashing “cool on”? Each thermostat model has a different display message when a delay.
