Introduction
The Duomatik Control Unit/HMI is equipped with a built-in industrial-grade 3.6V 2400mAh AA (Mignon) Lithium (LiSOCl2) Battery, used for maintaining clock functionality and preserving timer settings during boiler shutdowns or power outages. Although these robust cells typically offer prolonged lifespan, eventual failure is inevitable.
Should your boiler frequently lose time and settings, it might signal the need for a battery replacement.
This in guide we will walk you through the process of replacing the battery.
Note
If you're replacing the battery as a preventive measure, when you power on the module after the repair, it might initially seem broken to you. The module will enter an error mode due to time loss, locking all functions except for setting the time. Therefore, your first step would be setting the clock before accessing other features.
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Locate the HMI module of the Duomatik, that you want to remove.
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Insert a flathead screwdriver or a Spudger into the small notch on top of the module to gently loosen it.
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Place the module on its front.
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The back of the module is held in by four clips. Use Spudgers to hold the clips open while you remove the back.
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Place the module on its back.
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Open the flap that covers the buttons for setting the timer.
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Remove the encoder knob by pulling it off.
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Release the first two clips holding the PCB inside the housing.
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Release the last two clips holding the PCB inside the housing.
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Remove the PCB from the housing.
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Desolder the negative connection.
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Desolder the positive connection.
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To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
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