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04-02-2015, 09:59 AM #1
Daikin erq250a7w1b freezing liquid line on heating
Hi
Can anyone suggest a reason for my liquid line freezing on heating
I have 3x Daikin erq250 connected to a air handler, 2 of which work ok but the 3rd which is running the top of the coil on the ahu is freezing down the liquid line, pressure drops to 3 bar -20 on liquid and the hot gas line is at 15bar so there is no heat at the ahu. I have recovered the refrigerant which was exactly the correct charge.
Any help would be appreciated
Many thanks