anyone noticed that heater have internal thermostat that switches them off, while the

[KevinK]

Originally Posted by hfp75

Do a test and in the controller lower & raise your on/off temps.... Then watch your on times...... If one is not on as much maybe the thermostat inside isn't letting it turn on...

I had a prob where my one heaters temp was set to low and even though the controller had turned it on, it was turning itself off... Internal thermostat issue. My prob was solved by turning up the temp more....

You might have a dead heater...

it is not the timer/controller that is going off, because that would mean all off or all on.

the 3 heater are on one channel, that is calling for on, and with one of those 3 way split it is going to the heaters that are all turned to max, as the controller handles the temp control. interestingly is that heater a each time is off for about

could be as you mention be a slightly faulty heater (but all 3), thy do heat, only as the timing suggest on and off for heater A is each time around 65 sec. off and for heater B each time in the 27 sec range