hi got a daikin outdoor inverter 14 kw 410. connected to a invisible air indoor mini duct system. problem is its not cooling . 18 degrees at outlets. ive checked suction presure was at 70 psi so added 410. suction doesnt sweet back head pressure is low 225 psi. checked on heating works fine. I think its reversing valve. as there is a temperature diff on both suction pipes in and out. what are your thought