Question about Carrier Heating & Cooling
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Posted on Jan 02, 2017
Hi!!! Does your ac unit work fine?If not check your low voltage problem..You have a low voltage problem check the wire going out to your condensor make sure that they are not touching..Good luck..Check low voltage wires..short in progress..
Posted on Jan 04, 2009
SOURCE: My outdoor heat will not
you need to go oside and look for a red reset button on the unit. you tripped the high ressure switch when you let your filter get that dirty. go check on this and when your done if it still is not working then ask me more.
Posted on Jan 25, 2009
Hi, On this model of heat pump, you will have a defrost board with termination times on the face of them. There will be 1 wire plugged into one of the times, such as 15 min., 30 min., and 45min. I just wanted to let you know this and this is what determines the start and stop of defrost. You also could have a defrost timer/ defrost relay and will have a defrost thermostat located on the liquid line on the condenser coil that will also start this process if needed. This is called time and temp. defrost. On the board, there is a test point on it and will tell you on the schematic how to test this board and put it into a defrost mode very quickly just by pulling a certain marked wire plugged onto a pin and placing it on a different marked pin. This way the service tech doesn't have to set and watch for 45 min.This you can try and see if it does go into a defrost mode.If you can manually put it into a defrost, you will need a new board, as it is not going into defrost in automatic.If it doesn't, you also have a faulty board. Being that heat-pumps have so many components on them, it is difficult to walk you through all components.Heat-pumps also have 2 TXV on them (metering devices) that meter freon into the coils 1 for heat and 1 for cooling.When you are in the heat mode, the condenser coil becomes the evaperator coil with the use of the reversing valve.What actually defrosts the coil, is when it goes into defrost, the reversing valve goes into the cooling mode sending hot gas to defrost the coil.You can try and check the board if indeed it is new enough to use a defrost board and not a timer.You can look through the window of the timer also if the unit is older to see if it is moving like a clock.If not, it is more then likely your problem.You will know when it goes into defrost as the steam from the melting ice starts to rise the unit appears to be on fire. I have had calls on this. The condenser fan also stops during defrost. A faulty TXV or expansion valve as I mentioned early on if plugged or not metering can cause this also. So, I am telling you there are some things you can check on your own, and without the proper tools and freon gauges, it would be very difficult to check every componanent without being onsight. Carrier has been around for many , many years and there units are of very good quality as is Day & Night And Bryant. But, check to see if you have the board, and if you can do the tests I have asked of you. A board can be ordered on line or purchased at an appliance parts store. Please let me know what is going on with your progress. Sincerely,
PS (9 times out of 10, the defrost board is at fault or timer which ever you have.These units are difficult to trouble shoot without being onsight. Good Luck, and please let me know.
Posted on Dec 07, 2009
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