big problems on ICP Airquest outdoor heat pump. Need the brains here

[freonnut]

Hello,
I am new here, and I am here because of this problem. Hope you guys will help me.

I am working on an airquest heat pump. The contacotr will not pull in. I am gtting 24 volts on my red and yellow wires outside. I have replaced, the defrost control board, the contactor, and the reversing valve solenoid. Its still not pulling in. all the T-stat wires go through the defrost board. I assumed it was bad. I have yet to change the t-stat but I am getting 24 outside??? I think airquest got sold or something and i am having a hard time getting any input here.

ever had this problem pls help I am stumped.

[amd]

If you are a technician, you'll get better replies in the Pro forum.

If not, DIY is against the forum rules.

[billva]

You replaced a RV solenoid because the contactor will not pull in?

I'd say it's time to call in a pro.

[acmanhoney]

you need a technician to diagnose the problem, just changing parts is bad to do:mad:

[freonnut]

I am a certified tech. I have been working on HVAC equip for years. I can see from your comments you are just as stumped as I so keep your hating to yourself. I am certain that anyone who is in this biz long enough has come across a few problematic issues such as this one. if not then I guess i googled the wrong forum. I was hoping to get some advice that is actually worth my time reading here....I guess we will see. I do not have the time to register for the pros forum, I have a lady who is seriously not happy, and her apt is 90 degrees. The Compressor runs fine when the contactor is pushed in. once again pls help.

[hvacman14]

if your getting 24v to on the red and yellow wire either the tstat or a saftey switch isnt letting the power pass, is telling you that u have an open circut

you should have 24 v on yellow and common then the contact will pull in,

[freonnut]

Thank you I will check both.

[captaincaveman]

The commpressor may run when you manually push the contactor, but is it running "fine"? Or is it going off on a low pressure switch?

[jrbenny]

That will be enough helping for the evening.