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What is the working principle of VRV - Heating & Cooling

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Pumpdown vrv

You must locate the pipes on the outdoor unit and remove the caps. With the unit in cooling mode and operating shut the liquid line valve. (This is the smaller of the 2 pipes) allow unit to continue running for a few minutes then close the suction line valve ( the larger pipe) Turn unit off, the unit should now be pumped down ie all the gas is now stored in the outdoor unit. You should now be able to disconnect the pipe work from the outdoor unit. If the pipe work is to be disconnected and reconnected you must use a vacuum pump to remove any air before opening the valves otherwise you will have trouble with the unit

Sep 07, 2014 | Heating & Cooling

1 Answer

Red light blinking and no cold air provide

Indoor fan motor is not running. Check and replace it.

Aug 17, 2012 | Daikin RXYMQ48MVJU, VRV-S Air Cooled Eight...

1 Answer

U1 fault on a dainkin vrv

phase reversal . change one of the 3 phases over.

Nov 11, 2010 | Cfm Daikin R410a Split System Air...

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Error code c4

sensar mis placed

Dec 20, 2007 | Heating & Cooling

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