Air Conditioning - High Head Pressure on Goodman

W have a three ton Goodman unit that has a high head pressure (65/300) and I am wondering what are the reasons this could be? The coil & the blower motor are clean. We are being told that there is a restriction somewhere. There is an orface in the coil that cannot be replaced. Is there a way to "blow" whatever is clogging it out? Or does the coil need to be replaced. It seems to be stumping several people who have come to look.

Sounds like you need a better hvac company. If the outdoor coil is not dirty "are you sure??" then it could be a problem with the condensor fan or an internal restriction. A good tech would not have told you that the orifice could not be cleaned, but maybe in his eyes the unit isn't worth the labor that would be involved.

The outdoor coil can look clean yet be very plugged up.

The oustide unit was just installed last weekend (new unit). We were getting a high head pressure prior to the installation. The coil was not replaced. You said an internal resriction. Are you referring to the inside coil itself? The coil has been cleaned (real good).

With MAtt here. Can be orifice TXV valve if there .Dent in liquid line contaminate or noncondensables in system.

ED ;)

If we knew the superheat value & what it is supposed to be under the conditons at the time, it would help. High head, low suction, & high superheat points to a restriction in the liquid line somewhere. With low superheat, one tends to look for an air flow problem.
Just a shot in the dark here but has anyone worked on the blower section lately? Maybe replaced a fan motor? Is it turning in the right direction?