climate entity mapping issue with z2m Centralite Pearl thermostat

[light pewter]

hey all, Ive been using a z2m(alpine lxc) with HA for a year or so now to control my centralite pearl 3157100 thermostat. Everything had worked great but I am seeing what seem like mapping issues with the HA climate entity and the z2m thermostat now that I am making use of the 'emergency_heat' system_mode. In short, I am not able to set emergency_heating mode from the HA climate entity even though it shows as an option in the climate entity UI(bottom left). When I attempt to set it I get the error in the screenshot

I have been able to more or less work around this by sending an MQTT payload from HA, setting system_mode to emergency_heating directly. But the climate entity will now get into a goofy state at night when my automation turns down the heat and the thermostat is in emergency_heating mode. The Climate entity UI will either stop updating and continue to show set & current temp at 70, or it will grey out and show 'unknown' for all the stats

if I try to set the state of the climate entity in developer tools nothing happens.

what it shows as "hvac_modes" are valid options for the thermostat z2m attribute "system_mode" but trying to set it here to heat, cool or emergency_heating doesnt change the actual state at all. it also seems to show that the current hvac_mode is "off", which isnt correct. it is currently set to "heat".

I am out of my HA/z2m comfort area here so looking for some advice on how figure out where the problem lies. Many thanks