Furnace thermostat error battery replacement

There is a certain number of times that your furnace thermostat error batteries can be replaced. If you need to know the number, read on to find out.

Every single furnace has a required number of changes that the AC battery will have to be considered brand new. This is also true for every different kind of replacement battery labeled LR6, RW, and RW2. For example, if your furnace requires 3 fresh batteries and you only replace them twice, then your furnace requires 6 new ones. Some people tackle this chore one at a time instead of doing it all at once, which can cause malfunctions when replacing them again too far apart.

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Modern furnaces use electronic thermostats that are read by the furnace controller to turn on and off. An error code for such thermostats can cause the furnace to shut off before it should, and this can lead to higher energy bills.

Situation: The homeowner mentioned earlier reported an intermittent problem with his new gas furnace. After troubleshooting it, the technician found that there was a failed battery on his electronic thermostat (manufacturer unknown). This would fix the problem with the furnace that caused it to take longer to heat, turn on and off often, and make the temperature in the house unstable.

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Furnace thermostat battery replacement can be done in several different ways. This is due to the type of furnace and the configuration of the furnace thermostat controller.

Some indicators that a furnace thermostat needs battery replacement include an error message on the thermostat or it won’t display anything. If you press and hold the ON-OFF button, then it will display all the readouts that are active or display “battery low.” A typical way to replace batteries is by opening up the cabinet with the furnace, putting your hand over damper flames, and turning off the power

– by cutting off the power source (breaker), closing the piston damper insuring gas extinguishing (by waving a thermometer near side valves).