DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   HVAC (http://www.diychatroom.com/f17/)
-   -   Bad Goodman Heat Pump model DSZC18 (http://www.diychatroom.com/f17/bad-goodman-heat-pump-model-dszc18-151097/)

swillis 07-21-2012 08:55 PM

Bad Goodman Heat Pump model DSZC18
 
New system installed 29 July 2011 SW Indiana. Goodman Heat Pump model DSZC18 along with new inside unit.

1st problem was when system was running hard in early January 2012 (less than 6 months). Compressor Rotor Lockup. Called for service could not determine cause and reset heat pump controller.

Compressor Rotor lockup two days later. While serviceman was checking system again he touched the 220V leads on the controller board and about got shocked. He called regional distributor and they said "Oh yeah, we have had some problems with bad controller boards."
Cold solder joint. Replaced board.

Compressor Rotor lockup a few days later, serviceman replaced expansion valve and another part and charged system with coolant. I had to pay a $70 service call total (should have been picked up by Goodman).

System ran fine until mid May when weather got unusually hot then Compressor rotor lockup again. Reset unit by cycling circuit breaker. System ran fine for 5 days and locked up again. Cycled circuit breaker system locked up a few days later.

Serviceman started trying to diagnose the problem, Goodman wanted to blame power to house/unit. Service man finally put on a generic hard start kit but unit continued to lockup almost daily into and through June.

Toward end of June 2012, unit was locking up multiple times a day. Regional service tech for Goodman came to house with serviceman and tried many things and took multiple voltage and current readings (I had also been documenting time of day and outside temp when units were locking up).

Goodman wanted to blame grounding for power. I checked all of the ground connections and did not find a problem. They had indicated that they would replace the unit but instead serviceman had to drive out of town to pickup a factory hard start kit (Goodman could not be bothered to UPS it).

Unit is running better but has locked up twice since the factory hard start kit was installed. I have let the serviceman and the Goodman tech both know this but have heard nothing back. It will be interesting to see how the unit performs the rest of the summer. The hard start kit is nothing but a band aid on this system. The Goodman tech indicated that he was not seeing this problem with the same model on other installations and he covers a large area of Southern Indiana, parts of Ohio and a good portion of Kentucky.

scottmcd9999 07-22-2012 06:30 AM

So you have a problem you'd like to discuss, or you just want to vent about the troubles you've had with your system?

FWIW, sounds to me like the compressor should be replaced, but that's hard to say without hands on. As far as Goodman picking up the warranty ticket, that's never going to happen (on ANY manufacturer) on a system that's been running for more than a few months. If you have a problem on startup the manufacturer will normally cover it, but anything after that is on the contractor's dime. IMO, your installing contractor should have provided you with the labor to replace those components. Most companies around here provide a 1 year labor warranty with the systems they install.

Are you dealing with the installing contractor, or have you contacted someone else?

Quote:

The hard start kit is nothing but a band aid on this system
IMO, a system with a TXV should have had a hard start kit installed from the beginning. Goodman, like many other lower tier brands, tends to be more cost conscious and don't install components like that in all of their units. That's a design flaw in my opinion, but then Goodman didn't consult me when designing their line :)

ANY brand can have lemons. IMO, Goodman has more than most, but others here (and on other forums) disagree with me.

Marty S. 07-22-2012 08:39 AM

Locked rotor means the compressor is seized. Sometimes a hard start can break them loose but resetting a control board does nothing except clear the fault code. It really does sound like the voltage drops low enough at times that the compressor can't start. If that's the case then any brand is going to do the same thing until the issue is found and corrected. Have you contacted the power company to check if there's a problem with the transformer feeding the neighborhood or your supply lines?

beenthere 07-22-2012 09:02 AM

Sounds more like you have a contractor problem, not a manufacturer problem. The contractor charged you for a service call when it is still in its first year labor warranty they are suppose to provide.

A data logger can be attached to see if its really having a problem getting off LRA, or a problem with the control board.

swillis 08-03-2012 10:31 AM

Not a contractor problem, they have been super in trying to get it fixed.
Goodman :mad: is supposed to be shipping a new compressor but still waiting.
Factory hard start kit installed 3 weeks ago but unit has still locked up 6 times since then. This is not a power problem, it has checked out rock solid running around 245-248 volts. System is rated at 196-258 volts.

The control board on the unit also monitors the voltage and reports back to the inside control panel/display and also shows no low voltage messages when it shows a locked rotor.

scottmcd9999 08-03-2012 11:08 AM

Given Goodman's reputation, it doesn't surprise me. What does surprise me is that in this day and age of instant internet information that anyone would purchase a system like this from Goodman.

Just my .02 of course, and I'm sure I'll take a lot of flack for that one :)

Done That 08-03-2012 04:33 PM

Just some misc FYI:

Locked rotor fault should be 4 flashes on Yellow led and the Red led on solid for lockout. Control declares locked rotor when it sees a run of less than 15 seconds then trips. After this happens 4 times it goes to lockout.

Low line voltage fault ( 8 Yellow flashes) threshold is 185 VAC. High line voltage fault (8 Yellow flashes + Green led on solid) is 255 VAC. These create fault displays only, no action is actually taken by the control board.

beenthere 08-03-2012 05:01 PM

Quote:

Originally Posted by swillis (Post 980496)
Not a contractor problem, they have been super in trying to get it fixed.
Goodman :mad: is supposed to be shipping a new compressor but still waiting.
Factory hard start kit installed 3 weeks ago but unit has still locked up 6 times since then. This is not a power problem, it has checked out rock solid running around 245-248 volts. System is rated at 196-258 volts.

The control board on the unit also monitors the voltage and reports back to the inside control panel/display and also shows no low voltage messages when it shows a locked rotor.

Contractor should have data loggers on your unit to see if its really th compressor.

swillis 08-04-2012 08:33 PM

Done That:
4 flashes on yellow and solid Red is what always shows. Have never seen the low line voltage fault other than when pulling the outside circuit breaker during system check out.

beenthere:
Everything was checked out when the Goodman regional service tech was here. That was when he went back and then they recommended the factory Hard Start kit.

scottmcd9999:
Had a lot of respect in the owner of the company that recommended it (key word is "Had").


All times are GMT -5. The time now is 07:24 PM.