Using Triac MOC3052 for ac load on/off

[Vindhyachal.takniki]

1. Have to turn on or off, ac load using micro-controller. Microcontroller is +5V powered.
AC load is resisitive wire of 780ohms for heating wire purpose.

2. using MOC3052, I am sending high & low on its anode, but output load dont get on/off.

3. I am not using any zero cross here, I check when measured temperature is below setpoint just send +5V on MOC3052's anode & keep high until temperature is higher then setpoint then 0V on MOC3052's anode.

Is it due to this, that MOC3052 dont get turn on or off, as I am not using zero cross?

[Vindhyachal.takniki]

ckt

[kripton2035]

did you actually build the circuit ? if yes, then may be you don't have the MOC between A2 and G of the triac.
something like this :