Question about Heating & Cooling
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Posted on Jan 02, 2017
There are a couple possibilities:
1. If this is the first time you've started them for the season, one of the compressors might be seized up from sitting over the winter. In which case, new compressor required.
2. If you've just had the compressor serviced including recharging the system, it's possible that the system is simply overcharged. This will stop the compressor from working and giving you the same symptoms as above. If this is the case, you should have the service people come back with some guages and recover some of the refrigerant and the compressor should be fine.
3. If the unit has been sitting and there is a slow leak then there is not enough pressure in the system to allow it to run. The compressor will shut down if there is not enough pressure, but since you say there is a smell, i really doubt this is the case.
Most likely it's #1 or #2 above. If you haven't had it serviced recently, then yeah, it sounds like you're in need of a new compressor.
Posted on Apr 16, 2008
Unit#2 -Sounds like the contacts on the master switch are welded closed or the switch is broken, Replacing the switch should fix this unit.
#1 is a little more difficult to diagnose. The compressor is being taken off line by a circuit that protects the compressor from damage either; 1- liquid refrigerant getting back to the compressor which can be caused by something as simple as a clogged return air filter or evaporator coil on a heat pump or 2- overload situation caused by a bad condenser motor or a clogged condenser coil. The first thing you need to do is clean both coils and replace the filter,. Then check to be sure your getting good airflow across both coils. I think it's most likely an airflow issue I hope this resolves the problem GL!
Posted on Jun 12, 2008
Sounds like your start capacitor may have gone bad. If you remove the shroud, there should be an access panel for the electronics. In there, you'll see one (or two) cylindrical parts with wires coming out the top. If one of them shows signs of something coming out of it, it's probably your start capacitor and it needs to be replaced.
You can view the installation/service manual for DuoTherms here at Bryant RV.com (it's a 3MB PDF file, so download with care). Look on page 28 for info on the capacitors.
Posted on Oct 13, 2008
I don't think these little units have a start capacitor but what I would do is check that the on/off switch wires to make sure they aren't loose. Also check the wires to the compressor for loose wires as well. It is possible that these are the first signs that the compressor is about to fail. They also can act up some when they haven't been used for awhile and then you try and start them up. Try running the unit for a few hours without asking it to cycle. It might just be a sticky valve.
Posted on Apr 13, 2009
Most of the time the capasitors are bad but it could be that the commpressor is bad or if it is a heatpump the low pressure switch could have it locked out or the contactor could be bad also
Posted on May 02, 2009
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