ausmartin1
18-03-2010, 09:46 AM
I have the above with a 2 heads only install.
Upon start of gas flow in Cooling the indoor units (both) operational and non operational exhibit a "quite but noticable" 1 to 2 second "rattle":( as if there were small ball bearings in the heads flow curcuit.
Even when both are operational in cooling mode - as the units cycle with temp / gas flow start up rattle occurs in both units.
Both units Cool & Heat very efficiently ~ 27M in total pipe run.
Is this to do with the particular model that the "buzzes" the working AND Non working units EV's on start of the gas flow in cooling mode?:rolleyes:
Older R22 Multisplits had Gas flow noise only in the non working units when in heating mode (-Not in cooling).
In comparison to a Single split Daikins R410A units don't exhibit this start up gas flow rattle.
Just normal gas flow noise.
Install was vacuumed and no additional refrigerant charge was added as it is the below the lenght pipe work maximum.
No detectable gas leaks - either bubble or electronic snifer.....Could the unit have been over or under charged from factory? - but the temperature drop -down or up is perfect ie: great.
Just wondering if this is "normal" without annoying Daikin themselves.
Upon start of gas flow in Cooling the indoor units (both) operational and non operational exhibit a "quite but noticable" 1 to 2 second "rattle":( as if there were small ball bearings in the heads flow curcuit.
Even when both are operational in cooling mode - as the units cycle with temp / gas flow start up rattle occurs in both units.
Both units Cool & Heat very efficiently ~ 27M in total pipe run.
Is this to do with the particular model that the "buzzes" the working AND Non working units EV's on start of the gas flow in cooling mode?:rolleyes:
Older R22 Multisplits had Gas flow noise only in the non working units when in heating mode (-Not in cooling).
In comparison to a Single split Daikins R410A units don't exhibit this start up gas flow rattle.
Just normal gas flow noise.
Install was vacuumed and no additional refrigerant charge was added as it is the below the lenght pipe work maximum.
No detectable gas leaks - either bubble or electronic snifer.....Could the unit have been over or under charged from factory? - but the temperature drop -down or up is perfect ie: great.
Just wondering if this is "normal" without annoying Daikin themselves.