Arctica Chiller - How to set temperature range?

[dnsfpl]

set temp at 27

the chiller kicks in when temp hits 27.3, stop after cooling to 26.7
is there anyway to change the range to 27.5 start, 26.5 stop?

thanks on advance

[li_gangyi]

Why would you want to do that? It'll take the same amount of energy to cool, because it takes a longer time to cool water from 27.5 to 26.5.

Generally speaking a smaller temperature range is better, although it might mean more start stop cycles, which is why nowadays there are 'inverter' air-con units, the compressor has the ability to ramp up and down instead of completely stopping, and restarting.

[dnsfpl]

based on my observation

temperature increase 0.1°C every 15mins
when chiller kicks in, it takes 15mins to cool down the first 0.1°C
subsequently, 3 mins to cool 0.1°C
therefore from 27.3°C to 26.7°C, it takes 30 mins and rest 90 mins

if i can change it to 27.5°C to 26.5°C,
cooling will take app 45 mins
and rest 150 mins

this has no ill effect on livestock, but definitely save my pocket

cheers

[li_gangyi]

The only easy way I can think of is to get an external thermostat, like the Fox unit, which allows you to set the range.

[o2bubble]

bro, sounds a bit strange. I'm using artica also. If you set at 27c, it should only kick in at 27.5c and stop at 26.5c and not 27.3c & 26.7 respectively that you described. Anyway better not to mess with the thermostat if it is function correctly.. any warranty by JBJ? Maybe can check with them.

[dnsfpl]

based on the manual, its plus minus 5 degree fahrenheit
which is my case now, i have double confirm with others(using 1/3) too

i will be happy if i can change it to plus minus 5 degree celsius

[o2bubble]

bro, I have used artica 1/5hp and now using 1/4 hp and all along it's always +-0.5c from preset temperature for kick in and stop. There is a function to change the display to degree celsius.

[dnsfpl]

my display is in degree celsius
sadly, 1/3, like 1/2, is plus minus 5 degree fahrenheit

[o2bubble]

1/3 and 1/2 hp is +- 0.5 deg fahrenheit.. so funny why different from 1/4 and 1/5? You want to call JBJ to check also?

[dnsfpl]

correction 1/2 power is 0.4 degree celsius

do mind calling them, do you know the number?

thanks

[o2bubble]

bro, you can do a search on internet for their website..