One of a kind fog machine, heater issue

[hmmmmm]

Ive got a big fog machine laying around that im trying to fix. Its a bit special, because its a prototype that never went into production. Its looks like they used some quality components though, good pumps, Meanwell power supplies etc. It has both a fogger and hazer function, led lighting, big scroll fan, inline fluid sensor etc. Also, its appears to be brand new, internals look very clean ( i've had some other smaller foggers and they always have some rust or water spots on the inside when they are used for a while)

Now here is the issue, the heater wont heat up. According to the LCD its heating, but nothing happens, not even after 30 minutes. Ive checked the following:

-Followed the wires from the heater to the PCB. There is around 90V DC and 150VAC on the terminals on the PCB.
-There is a heat fuse on top of the heater, that is not blow according to my multimeter.
-When i check the 2 terminals on the heater itself, they are connected to each other, around 260 ohm. Ive read on the old interwebs that consumer grade heaters are usually around 100-200 Ohms. Seeing as this is more a pro grade unit, im thinking 260 might still be fine?
-As soon as i connect the wires from the PCB to the terminal im not reading any voltage on the heater terminals.

Im not sure on the voltages. Isnt equipment to either use DC or AC? Why am i getting both on the heater wires from the PCB? And if thats ok, why am i losing said voltage as soon as i connect the wires to the heater?

Hope someone can help me out with this, i would really like to use this thing for a party in a couple of weeks.

[David_AVD]

260 Ohms for a fogger's heater sounds very high.  Assuming 240V, that's only around 0.9A and 220W of power.

The "phantom" voltage on the heater drive (with heater disconnected) is just leakage through the TRIAC or snubber capacitor.

It sounds like there's no real voltage being applied to the heater.