After initial warm up the ready light goes of then back on every couple of seconds. Is this the expected behavior or...

After initial warm up the ready light goes off then back on every couple of seconds. Is this the expected behavior or should it remain off completely? The same happens during the brew cycle.
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C176bbbc9e2224c17df86c42b7bf70f7
While I don't have an Expobar, this is typical of other machines and indicates the heating circuit turning off and on to maintain the correct heat on the boiler. When you are preparing to steam, does the light stay on longer? If so, this is normal, due to the extra heat required by the boiler to produce steam
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5fb828b7047afdf7b3cf5d6b2fd31de3
Please check the boiler pressure. the heater should be turn off once the pressure reach 1.0bar the light goes off, and light on again when the pressure drop down to 0.8bar.
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