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idarling 10-07-2012 01:30 PM

Mini split cycling on and off
I just had a Daikin mini split installed on Friday 3MSX24JVJU. The indoor units and outdoor unit are cycling on and off like every 3 to 5 minutes. This seems very abnormal to me. I thought that the outdoor unit was suppossed to basically stay on and ramp up and down to meet the load. Any insights?

biggles 10-07-2012 01:48 PM

if it is cool might be short of charge from the start up if the FAN is in AUTO setting it runs as the condenser does in ON runs all the time

hvactech126 10-07-2012 03:49 PM

call your installer back!

idarling 10-07-2012 11:58 PM

I have both heads set to 70F and auto fan. It was about 47F out this morning and 65F during the day. When the installer tested the unit it was putting out 110F (65F outside) and it has no problem reaching the set point, but then it cycles on and off every 3 to 5 minutes.

The other thing is I have it set to 70F but it goes as high as 74F according to my electronic baseboard thermostat before turning off. The unit is mounted above a new double paned window. Do you think this is possibly affecting the temperature reading the head is getting?

biggles 10-08-2012 06:52 AM

the charge isn't there if your in heating mode right off with the evap being the condenser directly from the compressor...

jason1983 12-07-2012 07:53 PM

Hey Biggles,

Did you ever get your problem resolved? I'm experiencing a very similar situation here.


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