Chamber heater and temperature monitor

[BoA]

I have a chamber heater (H3) with temperature sensor (T4) in it, and second temperature sensor in chamber (T3).
Setting chambe rtemperature works fine, and everything seems working OK except one thing - limiting heater element temperature.

Heater temperature should not go higher than 120 *C, so I set temperature monitoring like this:

M143 H3 S100 P0 T3
M143 H3 S120 P1 T4 A2

so the chamber max temp is 100*C, and heater should be "temporairly disabled" when it reaches 120 *C.
Obviously heater gets disabled by second monitor when max temp reached, not sure how to re-enable it again. I expected that it will be enabled again when it's temperature drop, but that is not the case.

Any advice how to handle that?