diff --git a/src/devices/boiler.cpp b/src/devices/boiler.cpp
index 510d56988..f8f800439 100644
--- a/src/devices/boiler.cpp
+++ b/src/devices/boiler.cpp
@@ -574,6 +574,11 @@ Boiler::Boiler(uint8_t device_type, int8_t device_id, uint8_t product_id, const
                               FL_(auxHeater),
                               DeviceValueUOM::NONE,
                               MAKE_CF_CB(set_additionalHeater));
+        register_device_value(DeviceValueTAG::TAG_DEVICE_DATA,
+                              &auxHeaterStatus_,
+                              DeviceValueType::BOOL,
+                              FL_(auxHeaterStatus),
+                              DeviceValueUOM::NONE);
         register_device_value(DeviceValueTAG::TAG_DEVICE_DATA,
                               &auxHeaterDelay_,
                               DeviceValueType::USHORT,
@@ -1510,6 +1515,7 @@ void Boiler::process_HpSilentMode(std::shared_ptr<const Telegram> telegram) {
 
 // Boiler(0x08) -B-> All(0x00), ?(0x0488), data: 8E 00 00 00 00 00 01 03
 void Boiler::process_HpValve(std::shared_ptr<const Telegram> telegram) {
+    has_bitupdate(telegram, auxHeaterStatus_, 0, 2);
     has_update(telegram, auxHeatMixValve_, 7);
 }
 
diff --git a/src/devices/boiler.h b/src/devices/boiler.h
index 7ee7137f3..f4cc2e6a7 100644
--- a/src/devices/boiler.h
+++ b/src/devices/boiler.h
@@ -244,6 +244,7 @@ class Boiler : public EMSdevice {
 
     uint8_t  auxHeaterOnly_;
     uint8_t  auxHeater_;
+    uint8_t  auxHeaterStatus_;
     uint16_t auxHeaterDelay_;
     uint16_t auxHeaterHyst_;
     int8_t   minTempSilent_;
diff --git a/src/locale_translations.h b/src/locale_translations.h
index fca4abe45..dd13312c6 100644
--- a/src/locale_translations.h
+++ b/src/locale_translations.h
@@ -370,6 +370,7 @@ MAKE_PSTR_LIST(maxHeatDhw, "maxheatdhw", "heat limit dhw", "Heizgrenze Warmwasse
 
 // translations are in order en, de, nl, se, pl, no, fr, .... some missing
 MAKE_PSTR_LIST(auxHeater, "auxheater", "enable auxilliary heater", "Erlaube Zusatzheizer")
+MAKE_PSTR_LIST(auxHeaterStatus, "auxheaterstatus", "auxilliary heater status", "Status Zusatzheizer")
 MAKE_PSTR_LIST(auxHeaterOnly, "auxheateronly", "auxilliary heater only", "nur Zusatzheizer")
 MAKE_PSTR_LIST(auxHeaterDelay, "auxheaterdelay", "auxilliary heater on delay", "Zusatzheizer verzögert ein", "Bijverw. vertraagd aan", "Tillskottfördröjning på", "Opóźn. włączenie dogrz.", "Tilleggsvarmer forsinket på", "Chauff app tempo marche")
 MAKE_PSTR_LIST(auxHeaterHyst, "auxheaterhyst", "auxilliary heater on/off hyst", "Zusatzheizer Schalthysterese", "Aan/uit-hysteresis in verw. bedrijf instellen", "På/av-hystereses Husv.", "Histerez wł/wył Ogrzew.", "På/av-hysterese Oppvar.", "Hystérésis Marche en mode chauffage")