Has a tremendous amount of potential, but can't recommend in current stateStay away - stay far, far away!What I learned from my "learning thermostat"? That it is a gimmicky waste of money. A beautiful device that can destroy your heater We REALLY tried to like this product...Energy-Efficient and Quality Built Thermostat.Nest Learning Thermostat is HORRIBLE for Rental PropertiesNest Support is Loosing Them Customers things: Samsung Smart Airconditioner support You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.With this heat pump troubleshooting guide, you can diagnose and repair the most common problems in a residential heat pump system. Most of the checks can be performed with common household tools and a little bit of basic knowledge. (You provide the tools and we will help with the knowledge.) This guide is for units that are connected to an indoor air handler and transfer the heat through a duct system.

The typical service call will cost you over $100. With the help of this guide, you can do your own heat pump repairs and keep that money. Before troubleshooting begins, it is important to ensure that the routine maintenance has been performed on the system. air conditioning units for a garageIf the routine maintenance has been done, it is time to find the problem.air handling unit return A heat pump has two basic modes of operation and the steps to diagnosing a problem are a little different. 6 ton ac costWhen troubleshooting in the cooling mode, the process is basically the same as diagnosing and repairing a ducted central air conditioner. If your system is not providing any heat to the home, then you can begin your heat pump troubleshooting at the thermostat.

Ensure that it is on heat and set above the room temperature. If you have a digital thermostat, then set the desired temperature to about 2-4 degrees above room temperature. This should make only the heat pump part come on and not the backup electric elements. (If you do not have a digital thermostat, we would highly recommend replacing your thermostat.) Now, turn the fan switch to on. If the fan doesn't start, then check the fuses/breakers for the air handler or furnace. If the breaker was tripped, the problem could be a bad wiring connection, the blower motor, or the control board. If the breaker was not tripped, the problem could be the thermostat, low voltage wiring, or the fan relay.If the fan is running, turn the thermostat to emergency heat. Ensure that the setpoint is at least 5 degrees above room temp. Wait for about a minute, then check to see if warm air is coming out the vents. If there is, then the problem is with the outdoor unit. If there is not, the problem could be the thermostat or something in the air handler.

You can use our electric furnace troubleshooting guide to diagnose and repair the problem. If you have decided the problem is with the outdoor unit, return the thermostat to normal from emergency heat. Wait a couple of minutes, then continue your heat pump troubleshooting at the outdoor unit.Is there a lot of ice/frost buildup on the unit? If there is, The problem is either a defrost control or the unit could be low on refrigerant. You can test the defrost control by manually forcing it to defrost. On older units, they had a defrost timer motor and you could manually advance the timer motor to initiate defrost. If you do so and the unit does not go into defrost, the timer motor is probably bad. On newer units, they have an electronic defrost control board. They typically have a set of pins that are jumped to manually initiate defrost. If you do so and the unit does not enter defrost mode, the board is probably bad.Is the outdoor fan running? If it is not and you live in a colder area, the unit may have an outdoor thermostat installed.

If it is colder than the setpoint the unit will not run. Otherwise, you should continue your heat pump troubleshooting by checking the high pressure cutout, for a wiring problem, the fan motor, or the run capacitor.If the fan is running, feel the refrigerant lines. The bigger line should be warm. If it is not, the problem could be a wire in the unit, the compressor run capacitor, compressor, or the unit could be low on refrigerant. **NOTE** It is best to check the charge of a heat pump with the unit running in the cooling mode. If possible, wait until the outdoor temperature is above 55 degrees. The final step in your heat pump troubleshooting should be to run the unit through a normal heating cycle. It is a good idea to check the temperature rise of the system after it has been running for 10 -15 minutes. You can do so by measuring the temperature of the air coming out of the vents and the temperature of the air entering the fan coil. Subtract the entering air temperature from the leaving air temperature to find the temperature rise.

This should typically be 15 to 20 degrees. DS Lite does not turn onBroken power switchAC adapter issuesBattery issuesLogic board issuesProblems with the displayTouch screen turns off during game playTouch screen doesn’t respond properlyScreen is blank or image is locked upScreen Is CrackedRibbon Cables IssuesLogic Board IssuesProblems with soundNo Sound From The UnitNo Sound From The Headphone JackProblems with the buttonsButtons Do Not RespondMicrophone Does Not WorkProblems with WiFi Make sure that the power switch is in working order and not damaged in any way. When the system turns on, the power LED should light up green or red depending on how much charge the battery holds. If the switch is damaged then it will need replacing. Make sure to fully charge your DS Lite using the appropriate AC adapter. When plugging the AC adapter into the console, ensure that the orange light on the top right of the device is lit. If this light does not come on, your AC adapter might be defective and you will need to replace it.

If the light does come on then the battery may need to be replaced. Make sure that you fully charge your DS Lite battery using the appropriate AC adapter. If your DS Lite has had 500 or more charge cycles, the battery pack may only hold 70% of its capacity. This is a common issue with all rechargeable batteries as they are used more and more. Replacing the battery should fix this issue. If the same problem persists with a new battery, there may be problems with the logic board. If your console still doesn’t work after replacing the AC adapter, battery, and power switch, then your logic board needs to be replaced. If you are playing a Game Boy Advance game on your DS Lite, the touch screen will turn off because the Advance games do not use the touch screen input. If you are playing a DS Game that does use the touch screen input, then there may be an issue with the screen that requires replacing it. Make sure that you are using the DS Lite stylus. If the screen is scratched, dirty, or contaminated with foreign material, it may need to be cleaned.

To clean the touch screen, slightly dampen a lint free cloth with water ONLY and wipe off the screens to loosen any dirt or debris. Then, using a dry cloth, wipe the screens to dry them and finish the cleaning process. If needed, repeat the cleaning process. If this doesn’t solve the problem, recalibrate the touch screen by selecting settings from the main menu. If the screen still won’t respond properly, then it might need to be replaced. If an image appears on the screen, but appears frozen, or if there is no image at all, first make sure the power is on. A green or red power LED should be lit depending on how much charge the battery holds. If the LED is on, check that the game cartridge is inserted completely into the appropriate slot. Then, turn the power off and remove the game. Next, make sure the game connector and game slots are clean and free of foreign material. Finally, reinsert the game and turn the power on. If these steps do not resolve freezing issues, the logic board, game card, or screen might need to be replaced.

Check to make sure that the screen isn’t cracked and that there is no other physical damage. If there is damage to the screen then you will need to replace the screen. If the screen still doesn’t function properly, then there might be an issue with the ribbon cable. If there are distorted images on the screen, there might be an issue with the ribbon cables. Carefully check to make sure that there is no damage to the ribbon cables such as scratches or tears, and if there is damage it needs to be replaced. Unfortunately, the ribbon cables are attached to the screens so a damaged ribbon cable will require the whole screen to be replaced. If the screen still will not function properly, there might be a problem with the logic board. If your console still doesn’t work after replacing the screens and the ribbon cable then you might have an issue with the logic board and it will need to be replaced. If there is no sound coming from the unit, first make sure that the sound is on and at a high enough level to hear.

Also note that some parts of a game might not have sound, and if headphones are plugged in no sound will come from the speakers. If the volume is on then there might be a loose internal connection with the speakers. Check to make sure that all of the connections to the speakers are secure. If this doesn’t solve the problem, then there might be an issue with the ribbon cable and it needs to be replaced. If this doesn’t solve the issue, then the speakers might need to be replaced. If there is no sound coming from the headphone jack, first make sure that the headphones are plugged in fully. If it still doesn’t work, try another pair of headphones. If you only hear sound from one side of your headphones, or no sound at all, then the headphone jack might be broken and the logic board needs to be replaced. If the buttons on your unit do not respond, first make sure to remove any excess dirt and grime that may have accumulated on the buttons. If this does not solve your issue then the buttons will need to be replaced.

If the problem persists, then there is a problem with the logic board and it might need to be replaced. If the internal microphone does not respond, make sure that the game is designed to use the microphone feature. Then make sure that the microphone opening is not covered or blocked since this can prevent sound from reaching the microphone. Also, if using an external microphone, make sure it is plugged securely into the microphone jack. If these steps do not work, the microphone may need to be replaced. If the internal wireless does not work there are a couple items to check. First make sure that the wireless router supports 802.11b, as routers that only broadcast in 802.11g or 802.11n may not be compatible. Then make sure that the DS is within proper range of a wireless router and has a signal strength of at least two bars. If trying to play a multi-player game, make sure that all DS systems are within 30 feet of each other, and that each DS has its own game card if needed.