Reversing Valve Eval Haier Heat Pump

The reversing valve would stick in defrost mode sending cold air into the house activating the emergency heat. After the heat pump was shut off for about an hour it would operate normally until the next defrost cycle.

This model heat pump did not have a timed defrost mode so the wire controlling the reversing valve was detached and the unit was watched for excess frost build-up, at which time the wire was reattached to initiate a defrost cycle or the unit was shut off until it thawed.

I posted this because I couldn't find any postings on reversing valves. Enjoy

Category:

Science & Technology

Tags:

• Reversing Valve
• Haier RV
• HVAC RV
• Heat Pump

[kennetters]

I am a tech and since I've been in the field I find that customers don't understand that their units will last longer (don't matter what kind of system they have) you have to have a tech perform at least once a year maintenance. But the system will last longer to, if it is installed properly. So customers don't be cheap when a tech tells you that your system need something. I do recommend that you get a second opinion because their are some crooks out there.

[SlyOne77]

I agree with your statements. I'd say many early failures (within a couple years) are DIRECTLY related to improper installation. There are many thing that should be considered, and a few tech either don't know or don't care (or perhaps most likely think it doesn't matter). Kinda like building a house, you gotta do it right the first time.

[theASEtech]

thanks for this video never put attention on this one and is good thanks to everyone that is sharing knowledge

[FilterChanger]

Why is the condenser fan running in defrost??? That'll never work properly.

[thereceman]

oh made in china. out of all the schooling and units that ive worked on. ive never heard of the rvs going bad. get what you pay for

[thereceman]

thats funny, usually the rvs is the last that will go out on a heat pump

[SlyOne77]

If I was doing it again I wouldn't buy another Haier, (mainly because the parts are a little harder to come by) I'd probably go with a Trane... but who knows.

[SlyOne77]

Who knows, there are many ways it would quit, but the killer would be the compressor, most other things can be fixed fairly easily.

[SlyOne77]

I'm no tech, I was just tired of calling companies out to look at my heat pump and them replacing parts... so I decided to trouble shoot it myself. I've learned a lot.

As for your question, I think the tech is usually the problem, not necessarily the company.

[SlyOne77]

No, the main circuit board controls the defrost and it is sensor, not timed demand. I've unhooked the reversing valve solenoid, which disables the reversing valve from sticking in cool in the first place. Of course now I've replaced the reversing valve and everything works fine.