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    RS485

    GarRiney - - armStoneA9/armStoneA9r2 - NXP i.MX6

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    Hi...this is the same case as i faced with my heat pump. If heat pump does not receive acknowledge in certain time period, pump will raise an alarm and alarm mode is activated. Actions on alarm mode can be configured. The different alternatives are that the Heat pump stops producing hot water and/or reduces the room temperature.