Your Honeywell thermostat needs a new battery when you notice a blank display screen, a flashing low-battery warning indicator icon, or erratic behavior such as losing Wi-Fi connectivity and failing to trigger your HVAC system. Many models will also display explicit text prompts alerting you that battery voltage is low. Verification: Verify that the low-battery warning disappears and the screen brightens immediately after installing fresh alkaline batteries.
1 votes
Marked as accepted