Darrylfb
30-01-2020, 02:20 PM
Hi All
I have a daikin vrv 2 r410a, reyq16m8w1b, running 16 indoor ducted units in a hotel, some units share a bsbox some have their own.
Client tells me that usuall late afternoon or evening the units start blowing out cold air.
Ouside air temperature is around 5°c at this time.
I have run this system up fully loaded many times and its usuall heats fine, however, i turned all then units off, and then ran just 6 random units in heating and they all started blowing out cold air to the point the rooms were nearly 14°c.
After speaking to daikin technical, the asked me to change all thermistors and motorised valve heads on the condenser, which i have now done, tested the system after and everything was heating fine. Left site. Got a call following morning from hotel saying they were blowing out cold air again.
This is not specific to any individual units.
If all 16 units are running the issue doesnt occor.
When the issue is present, my condensing unit looks to be operating correctly with running pressures and tenperatures all good, with hot gas flowing to the bs boxes.
Any help would be much appreciated.
I have a daikin vrv 2 r410a, reyq16m8w1b, running 16 indoor ducted units in a hotel, some units share a bsbox some have their own.
Client tells me that usuall late afternoon or evening the units start blowing out cold air.
Ouside air temperature is around 5°c at this time.
I have run this system up fully loaded many times and its usuall heats fine, however, i turned all then units off, and then ran just 6 random units in heating and they all started blowing out cold air to the point the rooms were nearly 14°c.
After speaking to daikin technical, the asked me to change all thermistors and motorised valve heads on the condenser, which i have now done, tested the system after and everything was heating fine. Left site. Got a call following morning from hotel saying they were blowing out cold air again.
This is not specific to any individual units.
If all 16 units are running the issue doesnt occor.
When the issue is present, my condensing unit looks to be operating correctly with running pressures and tenperatures all good, with hot gas flowing to the bs boxes.
Any help would be much appreciated.