Haier HSU 12HF03 Temperature Problem

[its1]

Hello: I am having problems with my high wall Haier heat pump. When I turn on the unit first thing in the morining the vent opens up but no heat comes out and the power LED blinks. After a couple of hours when the outside and inside temperature has increased the unit will operate perfectly.

Output temp when running normally is 50 deg celcius
Outside Temp in the mornings is approx 0-2 deg celcius

I have no manuals or paper work for this unit.

where should I start for troubleshooting for this problem. Thermisistor? Reversing valve? *****?

[nike123]

*****!...........

[its1]

Sorry I was meaning Gas (refrigerant)

[nike123]

I mean that you should start with checking correct refrigerant charge.

[its1]

I have a small problem with that at the moment, the service valve on the unit is set back inside then frame of the unit and I can not connect my hose to the service valve. But I suspect it is ok because when it does work the unit puts out a constant 52 degres.

[its1]

Thats 52 deg Celcius (125 F )