![]() ![]() Thermostat model: Honeywell RTH7400 The owner's manual suggested I set the heater setting to above the current temp (80 degrees F) and the cool setting to below that temp and wait 5 minutes for the system to reset. Jun 23, 2014 - When a customer's thermostat keeps blinking, programmable thermostats help cooling systems run more efficiently by warning you if there's a problem. Turn the thermostat off, wait 30 seconds, and turn it back on. Thermostat Troubleshooting – Battery Replacement When the Replace Battery warning beings to flash, it typically means you have a couple of months before the batteries will deplete. Honeywell 4000 series (Th4110D/ TH4210D) “REPLACE BATT” flashes • To remove and replace the batteries, pull at the bottom of the thermostat to remove it from the wallplate. • Once removed, turn the thermostat over and insert 2 fresh AA batteries, and then reinstall the thermostat on the wallplate. Honeywell 6000 series (TH6110D/ TH6220D/ TH6320U) “REPLACE BATTERY” flashes • Press and pull to remove the battery holder at the top right of the thermostat. • Insert 2 fresh AA batteries and then reinstall battery holder. • It is suggested to replace the batteries once a year. If batteries are inserted within two minutes, the day and time will not have to be reset. Quicksand visuals facebook. Honeywell 8000 series (TH8110U/ TH8320U/ TH8321U) “LO BATT” flashes • Grasp thermostat and pull to remove the thermostat from the wallplate. • Insert 3 fresh AAA batteries and reinstall the thermostat on the wallplate. It is suggested to replace the batteries once a year. Please contact us today regarding troubleshooting your thermostat.
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