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It won't start oscillating :-( So... - bimetallic blinker with load and my board = failure. - bimetallic blinker with load without my board = success. - electronic blinker with load and my board = success. Something is keeping the bimetallic blinker from doing its thing. It outputs a constant...

These have a "non-standard" way of blinking. Do they go along, can a MOSFET be used in between a blinker and a pair of 21W light bulbs ? Thanks!

btrueblood, why would the control cicuit then need to "magically derives an estimate of the load on the motor" when the very same control circuit is the one driving that fan motor (i.e. no need to magically derive anything, we can measure that draw in real time) ? So I still think Mike was...

>> If it needs to heat it runs on med and lights the furnace. Instead of running the compressor as usual... must be saving plenty of energy :-/ >> If however the air handler did not shut off, but operated at a slower speed during the compressor off time, it can still cool, by blowing air over...

It looks our fellow member Mike has not logged in for an year. Can someone else explain what he was talking about, how is such an air handler able to save energy "and lots of it" ? Around here no one sells these AC sort, only the regular compressor motor inverter AC's. Thanks

Got it! And thanks for the confirmation as well

Well, that's the main issue i guess, don't know the working pressure. Someone in my area suggested that it ought to be in the 29.5 - 30 bar range for the usual AC units around here having my specs, which corresponds to about 50 degrees C - http://www.csgnetwork.com/r410apresstempconv.html P.S...

Hello again, I could not figure any way to compute the numbers with the date I got, but, after some research online, I now think that the refrigerant temperature, in heating mode, ought to be about 50 deg C (122 deg F) when outside ambient temperatures are at 7 deg C (45 deg F) Just took some...

For a given outside temperature range, refrigerant type and weight, pipe length between inside and outside units, and (air conditioner) compressor power, are there any formulas for determining refrigerant temperature, in heating mode, as it enters the heat exchanger at the inside unit ? What...