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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

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Error code e4 on daikin split system ducted air conditioner - what does it mean?

This is stating that there has been a low pressure error on the system.

This could have been caused by a blockage in the pipe work or a possible shortage of refrigerant. It could also be due to a fault with the low pressure sensor/switch.

Jan 31, 2013 | Daikin RXYMQ48MVJU, VRV-S Air Cooled Eight...

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U1 fault on a dainkin vrv

phase reversal . change one of the 3 phases over.

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

2 Answers

Error code c4

sensar mis placed

Dec 20, 2007 | Heating & Cooling

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