Quote:
Originally Posted by launboy
Why didn't they just defrost on their own?
Adam
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Sanyo #2, (in the den) actually had just about finished defrosting on it's own.
But, Sanyo #1 was really loaded down with frost over 100% of the coil,
And was making that odd buzzing sound.. So, I decided to intervene
by stopping the cycle and restarting in a faster defrost mode. (Dehumidify).
Not only is Dehumidify faster, it doesn't use a large amount of power to get the job done..
Quoting myself:
"The Sanyo control firmware avoids turning on the indoor fan while doing a reverse-mode defrost cycle.
It wants to avoid that blast of cold air.. "
In the Sanyo docs, it states, "No blast of cold air" during defrost. I guess that's a big selling point.
Since the house has already been warmed up, using the Dehumidify short-cut for a few minutes,
isn't a big problem for us.
Getting the heating mode running again in 5 or 10 minutes,
might be better than waiting an hour for the regular defrost cycle to finish up..
During that time, the IDU is
slowly dumping cold air into the house.
Even without the fan running.
The short-cut just does the same thing, a lot faster.
This time saver also avoids a total house cool-down from normal losses.
Plus, we have the additional problem of over-current at the end of regular
defrost cycle that causes power re-sets, which makes the process even longer..
http://ecorenovator.org/forum/applia...r-limiter.html
I'm suspicious the buzzing I heard from the #1 ODU this morning,
might have been caused by the current-limiter flipping off-&-on real fast..
Maybe the unit was trying to draw more than 10A, and didn't want to reset.?.
I'm planing to mod the current-limiter/breaker so it shuts the unit
down
completely for 53 seconds.. Just in case..