Goodman air handler

My thoughts... system is nine years old, why would the blower speed get changed, likely after nine years, to improve cooling??? The faster the air is moving, the warmer it will be. If refrigerant was added you likely have a leak, if the cooling decreased after 2 months it's probably a significant leak, or a different problem all together. On the same hand we are in the summer, making air conditioners work harder, cooling not feeling so cool, electric bills raising. Maybe you need one more opinion. Your a.c. should cool the air 15 to 20 degrees, if you have a thermometer measure supply air vs return air to get that temp split. Best Wishes!!

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150 is low for high side pressure. may have to add more r-22 to system. if you had a blockage high side pressure should be higher. have you turned both service valves at condensor ccw completely?

low air flow. dirty filter, dirty coil, unit low on freon.

The fact is, the air handler supplies the voltage, blower, and electric heat. In order for the heat pump to work correctly, the wiring from the thermostat and heat pump need to be hooked up right to the air handler. The thermostat is what tells which component to come on. If the fan stops, but the condenser keeps going, you either have a faulty fan relay on the air handler, faulty thermostat or wiring, faulty wiring at the heat pump, or the contacts on the new unit are sticking, which is highly doubtful considering it is working now. I hope I have helped you understand this a little more. Good luck and don't let them push you around, get someone that knows what they are looking at.

Hi,
There are two things that cause freeze up's...

Low air flow...

Low freon...

First check the filters, the blower , and the air vents to make sure that the air handler unit can move enough air...not enough air across the coil, the coil gets too cold, ice forms....


The low freon problem will require professional assistance...
For the system to be low there needs to be a leak...the leak must be found and repaired or the fix will only be temporary...
To do this the system refrigerant must be recovered, the leak fixed and then the system vacuumed and recharged...

One other thing....outdoor air temperatures under say 65 F can also cause freezing.... but I am assuming that you are above that if you are running your A/C system.


AirConditioner Trouble - Review the Possibilities

heatman101

sounds like there is a Freon leak and has been since it was installed and is going off on because of low charge, you will need to call a competent A/C repairer, more then likely the leak will be in the air handler, should cost under a $100 to fix. Good Luck Tim

Hi,
No you can not use a R-410 air handler with a R-22 condenser unit...the exspansion devices are different as the properties of the refrigerants are enough different that they are not interchangable...
Really your only choice is to replace the whole unit as it sounds like the exspansion valve or the orfice is partially clogged and it makes you constantly freeze up....
There are some things you could do to make it work at reduced capacity but it is way beyond what I could tell you through a computer...

heatman101

There should be a fan control center for the unit to switch from hi speed for cooling, lo speed for heating.

sounds like the coils inside the air handler/furnace are freezing up. likely cause is the freon charge is incorrect (probably undercharged). it may have been correct when the tech did the work but some may have leaked out. it is slightly possible too that the system is overcharged. you should have the system pressure verified, and then have it checked for leaks.

Does the cpompressor come on if not the sound you here maybe the contactor. Check float switch inside. It is underneath the unit or in front of the air handler. Drain stopped up need to blow out drain. Check outside breakers. possible bad capacitor on unit. Need service tech. Rusty