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Old 01-10-2016, 10:48 AM   #1
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Samlex Control; Alarm: CPF09 Heat Sink SR Open

Good morning!

Have been checking the Samlex control for the batteries regularily and this morning saw the "Alarm" code shown above. It is -22F this morning in Thunder Bay, Ontario. The manual says re the code, "operating temperature is below 0C (32F). Ensure operating temperature is above 0C (32F). I have been keeping the solar panel clear of snow and two days ago when I checked the control panel said 13 volts. Soooooo, should I be concerned? I mean this is just the beginning of winter temps here. It will go to -40 or lower sometime this winter. Does this error code mean the controller will cease to work and I will not know what the battery voltage will be until spring? Not sure what to do or think!

Hey Albertan Escapee's: What's your experience? You get the below Zero temps and leave the batteries installed... right?

Fred Alexander
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Old 01-10-2016, 03:54 PM   #2
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The Samlex SCC-30AB controller specifications include this:
Quote:
OPERATING TEMPERATURE RANGE 0C to +45C / 32F to 113 F
The full manual has lots of good information about solar power systems - not just this controller - but I didn't see anything more about low-temperature operation other than this limit.

I wouldn't have guessed anyone would build this sort of equipment with such a high minimum operating temperature, but I suppose they're assuming that the controller is inside a building or RV which is in use and thus heated if necessary.
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Old 01-10-2016, 04:19 PM   #3
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Made me curious, checked Bogart's SC-2030 controller.

Ambient temperature................................0 F to +140 F (−18 C to +60 C)

It'd be dead too at your -22F, time to move south.
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Old 01-10-2016, 05:13 PM   #4
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Add a little heat

Well thought I'd try a little experiment. Put a ceramic heater up in the cupboard and turned it on low for about 30 seconds. Bingo, the error code went away and showed battery power at 12.5 amps. Was 13amps two days ago, that's quite a drop. Maybe I should hook up shore power?

Fred Alexander
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Old 01-10-2016, 06:21 PM   #5
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Quote:
Originally Posted by fbalexander View Post
Well thought I'd try a little experiment. Put a ceramic heater up in the cupboard and turned it on low for about 30 seconds. Bingo, the error code went away and showed battery power at 12.5 amps. Was 13amps two days ago, that's quite a drop. Maybe I should hook up shore power?

Fred Alexander
I would charge from 12.4, however, no problem with doing that at 12.5 with your weather. I thought our -5 last night was bad. Can't stand this weather. You need a 12v battery monitor for checking the reading. Auto supply stores sell them.
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