Command for activating internal heater

[Zaph9001]

Force_Heater_State and Internal_Heater_State are available as topics but the heater can not be activated, correct?

[MiG-41]

You can't activate Heater just by sending command , it is up to HP to decide when , how many heaters ,for how long turn on and off. Ofcourse this is for "normal" modes, when compressor is in usage ,not the "heater mode" ,where heat is generated only from heaters.

[Zaph9001]

Well, I thought Force_Heater_State might have a command equivalent.
Would give the opportunity to control a boost for heating up DHW when it is taking "too" long.

[geduxas]

But it's own logic enables heater if it takes too long.

[geduxas]

[Zaph9001]

Mmmh,
DHW_installed 1 and DHW_Heater_State 1 but External and Internal_Heater_State is 0.
Maybe I need to check the settings on the control panel.

[IgorYbema]

You are missing the setting if you configured "DHW Internal Heater" or "DHW External Heater". This isn't decoded by heishamon (yet). If you have this set to internal, it will use the heatpump own heater to warm up the DHW (if necessary). If you select DHW external, it uses the DHW-tank heater.

DHW_installed = 1 just means that your installation has a DHW heater
DHW_Heater_State = 1 means that the heatpump is allowed to use the (configured internal/external) heater to heat the DHW
External and Internal_Heater_state = 0 just means that they aren't used currently

And indeed, you can not force any heater to turn on (unless use control it manually using a relay, but heishamon relays are to weak for this, don't use them).