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How to change from heat to cool just got one with no instruction

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I have a panasonic inverter air con. Model CU-E18LKR. it's not cooling properly. Seems to be blowing cold air out on th outside rather than inside.need instructions on troubleshooting


This is a reverse cycle (heating and cooling) model. It sounds like you have it in heating mode. Check the Panasonic website for an owners manual.

Jan 30, 2017 | Panasonic Heating & Cooling

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On a heat pump the difference between haet and cool is the reversing valve


On a heat pump the difference from heat to cool is the reversing valve.
In cooling or heating the Y1 terminal will always be energized, this is the contactor.
Depending on brand the reversing valve will either be energized in Heat or Cool. At the outdoor unit check to see if the reversing valve is getting 24 volts in cool, if not check to see if it is getting 24 volts in heating. The easiest way to check if the reversing valve is shifting, is to feel the big copper tube, (it is not the suction line on a heat pump) this is a refrigerant vapor line. It will be cold in cooling and hot in heating.
Check your thermostat installation instructions and heat pump installation instructions to determine the proper terminal designations for your heat pump and thermostat. There are some brands out there that use the B terminal as common to the 24 volt circuit, so you have to check the wiring and make sure this is not common.
If it is energized in Cool then the Y1 and O terminal will be energized. You will have 24 volts from common usually the C terminal to Y1 and O.
If it’s energized in Heat then the Y1 and B terminal should be energized. You will have 24 volts from common usually the C terminal to Y1 and B.
If you get heat when you’re calling for cooling or vice versa then switch the wire between the B and O terminals.

on Feb 02, 2010 | Heating & Cooling

Tip

Buying the right Thermostat for your Heating/Cooling system


When you feel the need to change you're room thermostat, keep in mind the one that you are changing out, and the type of system you are controlling, such as a Heat Pump split system, or package Heat Pump, a gas fired furnace with a central air conditioning which can also be split or a package unit on the roof or ground, heat or cooling only. For a Heat Pump, you will need a H.P. T-stat as there are up to 8 control wires for these units, to control emergency heat, aux. heat, reversing valve ect. Gas/Electric require only 4 wires, but normally a contractor will pull 5 conductors, one for a spare. On gas/elect. units, the terminals you will see on the new Thermostat will be RH, RC.1st of all, this stands for Red heating, and Red cooling. There will be a jumper wire connecting the 2. The reason for this, is the system you have most always will have only one transformer, to control both heat and cool. If you had a 2 transformer system, you would not need the jumper and you would have 2 hot wires, one for heat and one for cool. They only make these 2 transformer systems for commercial units now, so no worries. Next you will have a white wire.This is for you're heater. There will be a W terminal to connect to. Next, a Green wire, this is for the fan operation, a G terminal. Last you will have a Yellow wire which is for the cooling. Marked Y on the thermostat. In rare cases, they will use the blue wire for cooling. If this is the case, hook the blue to the Y terminal. Now you are ready to program the time and temperature's. Now, if you find you have only 2 wires to work with, red and white, you would more then likely have a heater only. No worries, just terminate the red to RH and white to W. If you happen to have a third wire such as green or blue, this will go to the G terminal for the fan. This goes for a cooling only unit.Red to RC, and white to Y. When using only heat or cooling alone, remove the jumper wire only under this condition. Remember, RH is for heat only, and RC for cool only. You're red 24volt hot wire will terminate there. Now, on a Heat- Pump system, pull off the face plate 1st. The thermostat connects to the sub-base behind it with several small screws. Remove it to expose all wiring and terminals. Due to the fact that most all heat pumps terminate differently, it is VERY IMPORTANT to mark each wire to the correct terminals as 0 to 0, or 0 to B, Y to W-1 ect. Make you make a drawing that you can understand, and mark each wire to what terminal it connects to. Heat-Pumps have several different terminations you must follow, and if possible, buy the stat before you remove the sub-base. Just take the name and any part numbers you may find with you, also you're diagram noting terminals. This way you will no for sure it will be correct. Please don't let this scare or confuse you, I just want to point out that Heat-Pumps have many terminations and you must follow instructions. This should have been noted 1st, but even though us contractors in this field change a thermostat without turning off the power, be sure you turn it off. If not, you may get a light tingle, but you can short out the new stat.Please make a copy of this to keep on hand, and I sincerely hope this has given you some insight on wiring up thermostats.Also, keep the manual that comes with the stat for programming and instructions for different terminations. Best of Luck to all and Sincerely,
Shastalaker7

on Dec 04, 2009 | Heating & Cooling

1 Answer

Changed a radiator today, drained system. Hot water will not heat now. Heating and radiators are working ok


Helen, if it is the radiator in your car that was changed, you may have air in the cooling system that needs bled out. May also be a failing water pump, thermostat,etc.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
How To Bleed Cooling System EricTheCarGuy
Bleeding Air In Cooling System
How to Bleed Air From Your Cooling System DoItYourself com

May 02, 2016 | Cars & Trucks

1 Answer

Honeywell Thermostat RTH6350 makes heat run in AC mode after AC runs


Well, if it wasn't doing that before then you more than likely know its in your wiring. Cools down then heats back up sounds like the auto change over is on, and the heat setting is higher than the cool setting?

Mar 02, 2017 | Heating & Cooling

1 Answer

Need to change from cooling to heating for a Kelvinator KSR27G split sys air con. Have tried ourselves using the remote, but we feel it is not operating correctly. No manual came with it when we purchased...


The cooling symbol on the remote is generally an "icicle" , the heating is a symbol of a blazing sun. Make sure you have selected the right mode. Also check the filters... if they are dirty, you wont get decent heating from any air con.. cheers,

BTW, I believe that electrolux have a site you can download instruction books.

Jul 14, 2011 | Heating & Cooling

1 Answer

We bought a house with Fujitsu Air-conditioners we have no instruction manual on how to use the remote. Im trying to set it to go off after an hour or so. Model No.INDOOR UNIT is, AST12RSJCW Serial No is...


Switch on by pressing ON/OFF. Press mode button to cool position. for cool and keep required temp by clicking

Same procedure for Heat. For heat keep +29 and for cool 25 to 22 degree. Press fan for High, Med,Low. If you keep mode in Auto cool and the fan speed will be low and you can't change fan speed.


Please visit Fujitsu website for further details. Hope my msg is helpful?

Dec 09, 2010 | Fujitsu Heating & Cooling

1 Answer

I have a new 13 seer rheem 4 ton heat pump system the heat pump won't turn on in heat or in other words it is only working in cooling mode I wired it according to the schematic


On a heat pump the difference from heat to cool is the reversing valve.
In cooling or heating the Y1 terminal will always be energized, this is the contactor.
Depending on brand the reversing valve will either be energized in Heat or Cool. At the outdoor unit check to see if the reversing valve is getting 24 volts in cool, if not check to see if it is getting 24 volts in heating. The easiest way to check if the reversing valve is shifting, is to feel the big copper tube, (it is not the suction line on a heat pump) this is a refrigerant vapor line. It will be cold in cooling and hot in heating.
Check your thermostat installation instructions and heat pump installation instructions to determine the proper terminal designations for your heat pump and thermostat. There are some brands out there that use the B terminal as common to the 24 volt circuit, so you have to check the wiring and make sure this is not common.
If it is energized in Cool then the Y1 and O terminal will be energized. You will have 24 volts from common usually the C terminal to Y1 and O.
If it’s energized in Heat then the Y1 and B terminal should be energized. You will have 24 volts from common usually the C terminal to Y1 and B.
If you get heat when you’re calling for cooling or vice versa then switch the wire between the B and O terminals.

Feb 02, 2010 | Heating & Cooling

1 Answer

Gold Star mini split heat pump 24,000 btu. Changed indooe as we as outdoor boards and still goes in cooling mode only. Reset button on outdoor board calls in heat but not by inside hand set. Len Cabana...


On a heat pump the difference from heat to cool is the reversing valve.
In cooling or heating the Y1 terminal will always be energized, this is the contactor.
Depending on brand the reversing valve will either be energized in Heat or Cool. At the outdoor unit check to see if the reversing valve is getting 24 volts in cool, if not check to see if it is getting 24 volts in heating. The easiest way to check if the reversing valve is shifting, is to feel the big copper tube, (it is not the suction line on a heat pump) this is a refrigerant vapor line. It will be cold in cooling and hot in heating.
Check your thermostat installation instructions and heat pump installation instructions to determine the proper terminal designations for your heat pump and thermostat. There are some brands out there that use the B terminal as common to the 24 volt circuit, so you have to check the wiring and make sure this is not common.
If it is energized in Cool then the Y1 and O terminal will be energized. You will have 24 volts from common usually the C terminal to Y1 and O.
If it’s energized in Heat then the Y1 and B terminal should be energized. You will have 24 volts from common usually the C terminal to Y1 and B.
If you get heat when you’re calling for cooling or vice versa then switch the wire between the B and O terminals.

Feb 01, 2010 | LG LS-K2430HL Heat Cool Mini Split Air...

1 Answer

I HAVE MISLAID REMOTE CONTROL INSTRUCTIONS TO CHANGE FACILITY REQUIRED IE COOL, OR HEAT


Hi,

You can download the owners manual; here is the link for it.

http://www.generalmanual.com/Air-Conditioners/LG-LA121CNP-Art-Cool-Air-Conditioner.htm

when you get to the page scroll down and you will see Download Now and under that "Owners Manual" just click on it.

I hope it helps.

May 27, 2009 | LG Art Cool LA121CNP wall/window Air...

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