Results 1 to 5 of 5
Thread: daikin vrv2 compressor
-
01-12-2010, 07:28 PM #1
daikin vrv2 compressor
DAIKIN REYQ14M7W1B
i replaced the invertor compressor and board
when brazing the 1/4 oil return line i lost some pre-charged oil on the new compressor
the compressor failed to start, i could hear it pulsing attempting to turn. it then went into a L9 fault
when i tried it again it started and ran but on restart faulted again
how much oil is precharged, the loss seemed minimal and how do i get oil in as there is no no port
-
02-12-2010, 05:32 PM #2
Re: daikin vrv2 compressor
Did you energize to unit (crankcase heater) for at least 12 hours before attempting to run the compressor? This is very important, even more so in cold weather. If not the compressor may have siezed which can be irreversable.
-
02-12-2010, 07:17 PM #3
Re: daikin vrv2 compressor
id say 60mins only, but it did run for me. i know d if the compressor senses any resistance when on start up it goes out on fault do you know if i can put any oil in it as i lost a bit thinkin about puttin a schrader on the suction worried now
-
02-12-2010, 08:47 PM #4
Re: daikin vrv2 compressor
You can pump the oil into any access point, preferably the suction with the unit running.
Brian - Newton Abbot, Devon, UK
Retired March 2015
-
03-12-2010, 09:03 PM #5
Re: daikin vrv2 compressor
Your problem sounds more like the result of liquid pumping, how did you charge the system? Did you check the crank case heater was operational and how long was it energised before start up? How did you manage to loss oil from the equalising line, was the compressor on it's side?
When charging a VRVII system NEVER add liquid refrigerant in the suction or dual purpose discharge/suction line (from a vac or when operating), these units have no suction accumulator.
Liquid pumping can result in the compressor lifting it’s oil due to foaming or liquid washing oil from bearings which in turn will eventually result in compressor seizure depending on severity of damage and operating conditions.
Only charge liquid into the liquid line from a vac then use the refigerant charge mode.
Sounds like you could be looking for another compressorLast edited by VRVIII; 03-12-2010 at 10:24 PM.
Similar Threads
-
Testing Inverters
By fridge doctor in forum Air ConditioningReplies: 38Last Post: 15-06-2011, 06:52 AM -
Compressor Change Daikin RZQ 100 B
By MrThin in forum Air ConditioningReplies: 6Last Post: 13-05-2011, 10:59 AM -
seized inv compressor
By flash in forum Air ConditioningReplies: 2Last Post: 09-04-2008, 06:56 PM -
Daikin VRV2 Recharging
By Birds in forum Air ConditioningReplies: 5Last Post: 25-06-2006, 12:06 PM -
Compressor pumping efficiency
By shogun7 in forum FundamentalsReplies: 0Last Post: 25-02-2004, 10:50 PM