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Old 03-22-11, 07:44 AM   #353
Xringer
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Location: Woburn, MA
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Default Success! Yes!! It works!

I'm talking about my latest invention..

http://ecorenovator.org/forum/applia...r-limiter.html



At about 7AM this morning, conditions were ripe for a defrost run..

time, temp, dewpoint, humidity
07:00 33.1 °F 32.0 °F 96%

I looked at the TED and saw 1400-1600w steady.. (should have been abt 500w)
I knew it! I looked at the indoor unit's LEDs
and there was the Slow Blink of Defrost mode!
An IR scan of the indoor coil was 62 deg F..

I went outside and saw a bit of ice on the bottom side air intake,
and a lot of water under the unit. Ice was gone off the rear (main) intake.

Back inside, I monitored the indoor coil heat and power use.
A few minutes later, the cycle paused and the power dropped to 60w.
The Defrost LED had stopped blinking.. Next comes the Horrible Surge!!

Cycle #1:
Soon, it started stepping up in power. Within 2 or 3 minutes, it hit the set-point.
At bit over 2300 watts, the 'power limiter' browned out the 230 power,
and the cycle started all over again.. (The indoor coil was still under 65F).

Cycle #2:
As the power incremented upwards, I noticed the indoor coil was getting warm.
Now up to 70 deg F! But, the 'power limiter' kicked in again..

Cycle #3:
As the power ramped up this time, the indoor coil got even warmer.
It was a bit over 80F (and climbing) when the power leveled off at 1940 watts..
It stayed at 1940w for a while as warm air surged into the room..
Then, 1930w, 1920w and slow it decremented downwards!!

It settled down at 490-500 watts and is running like a top now..

It's still early, but I'm calling this experiment a Success!

Cheers,
Rich
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