8 Answers. Without the battery, the thermostat won’t have any power source to work. 5. This delay mode is indicated by that flashing on the snowflake or “cool mode” icon. Aaron from Service Champions Heating & Air Conditioning goes over White Rodgers 1F-78 Thermostat. System on indicator (flame=heat, snowflake= cool) is lit, but no warm or cool air is coming from the registers. Snow-flake icon ( ) is displayed (non-flashing) when the SYSTEM switch is in the COOL position. White Rodgers thermostat battery is one of the main components that allow the tool to work properly. If your thermostat keeps blinking during the normal operation of your AC, that usually means there’s an issue with the outdoor portion of the system. Currently the temp outside has been down in the single digits at night and only up to about 20 during the day. We turned on our a/c and the snowflake was blinking! Poor contact – ensure the correct contact between the flame sensor and flame (required gap – 0.13” and elevation 0.4” – measured from the lower lip on low NOx and from the top lip on standard burners). 90 series premium thermostat/humidifier control digital 7 day programmable (52 pages) Thermostat White Rodgers 1f86-244 Installation And Operation Instructions Manual. This delay is to protect your equipment from short cycling. The delay mode is when the thermostat will automatically turned off for about 5 minutes or so before turning itself back on. Blinking snowflake on thermostat? Snowflake and Flame icons are displayed (flashing) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly. We've recently been having an issue with our heat. Flame icon (6) is displayed flashing when 2rid-stage heat (Aux or Emergency) is energized. Snowflake and Flame icons will be displayed (flashing) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly. the HEAT position. To program a White Rodgers thermostat, one does not need to take much trouble with the existing HVAC system. Snowflake and Flame icons will be displayed ( flashing ) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly. Snowflake icon (_) is displayed (non-flashing) when the SYSTEM switch is in the COOL position. When the outside temperature is in certain ranges (seems to be when it is below about 40 but above 20 or something), our thermostat begins flashing the flame icon. Heat Pump Thermostat. Changing over from White Rodgers Thermostat to Honeywell thermostat [ 3 Answers ] I have a White Rodgers 2 stage heat/1 cool model 1F58-58 heat pump thermostat that I want to change over to a Honeywell programmable thermostat model RTH7400. Thermostat red light flashing or stays on: When the thermostat light (Emergency Heat Light) is flashing or on during normal operation (whether in the cooling or the heating mode, but not the Emergency Heat mode), this usually indicates that the outdoor unit is "locked-out". White Rodgers 1F72-151 White-Rodgers 70 Series Programmable Heat Pump Thermostat manual : ... if the Flame icon ( ) and Snowflake icon ( ) are flashing, ... (flashing) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly. CAUTION! Heating/cooling equipment turns on the fan when the equipment has reached the setpoint. White-Rodgers, part of Emerson Electric Co., has been manufacturing thermostats since 1936. Many thermostats include an emergency heat light that flashes continuously when the unit is locked out, a feature that causes your unit to shut itself down and sends signals to your thermostat letting you know there's a problem with certain parts of your unit. heat, fan that is it. 3. Answered on Sep 01, 2011. 9 years ago. If the temperature is adjusted to call for cool within 5 minutes of the last cycle the snowflake icon will blink indicating the thermostat is locked out. Relevance? White Rodgers Air Conditioner Broken? of 8 Installation Instructions for. It’s basically been locked out, meaning that it has shut itself down and sent a signal to the thermostat letting it know there’s an issue. If the "cool on" or the snowflake icon is flashing, the thermostat is in delay mode, which can take up to 5 minutes. 0 Answers The snowflake on my ac thermostat is blinking and. 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