set_hkr_state() sets boost if any of eco or comfort are configured as "off" in the fritzbox.

[rotdrop]

See closed issue #128 (can't reopen). So what happens:

• I have set the comfort and eco temperature for my 302 thermostat to "off"
• if I now call set_hkr_state("eco") then it will fetch 126.5 form self.eco_temperature, see

  python-fritzhome/pyfritzhome/devicetypes/fritzhomedevicethermostat.py

  Lines 173 to 178 in 6d2653a

  	value = {
  	"off": 0,
  	"on": 100,
  	"eco": self.eco_temperature,
  	"comfort": self.comfort_temperature,
  	}[state]

• then next set_target_temperature(value) is called:

  python-fritzhome/pyfritzhome/devicetypes/fritzhomedevicethermostat.py

  Line 182 in 6d2653a

  self.set_target_temperature(value, wait)

• this in turn calls fritzhome.set_target_temperature() with the value of 126.5 and now we have a problem:

  python-fritzhome/pyfritzhome/fritzhome.py

  Lines 303 to 310 in 6d2653a

  	def set_target_temperature(self, ain, temperature, wait=False):
  	"""Set the thermostate target temperature."""
  	temp = int(temperature * 2)
  	if temp < 16:
  	temp = 253
  	elif temp > 56:
  	temp = 254

Here we see that in fritzhome.set_target_temperate() large value are interpreted as "boost" without checking if the large value is one of the two special "large values" 126.5 (== off) or 127.0 (== bost, but this is ok).

So my proposal is to check for the special value 126.5 in set_target_temperature() and interprete it as off. Otherwise setting presets which have been "disabled" to "off" will result in boost mode.