Question edited for clarity and add maker.
Try a reset. Disconnect mains power for at least 2 hours. Reconnect and wait 5 minutes before turning on. This resets the mainboard and initiates a self test procedure.
https://www.google.com/search?q=+Haier+CWH24A+not+heating+up
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You will be able to get the answers from Haier support in your country. We are Fixya, not them.
It sounds like a control board fault. You can try a reset. Turn it off at the breaker for 2 hours. Switch it back on and wait 5 minutes before turning the unit back on with the remote.
https://www.google.com/search?q=Haier+Thermocool+AC
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On a Haier Split system a E7 error is a failure of the outdoor inverter PCB and the outdoor power supply PCB. Both will need replacing. Looking around $600 for those parts. Plus fitting. The indoor PCB is very unlikely to be needed.
This website has got to stop letting just anyone answer questions. All 3 of these answers were completely unrelated and not helpful for this person asking the question. They didn't even look up the model number to understand what type of unit this is. I realize it's a very old question, but I'm sure even today there are people giving ignorant answers just as these 3 did.
***back of unit, very bottom, there's a drain hose connection. It's supposed to have a rubber plug in it and a plastic cap screws on over that. Hose isn't necessary to drain, if draining is needed as this unit evaporates the water through the exhaust. But water will build up under certain circumstances. Periodically check and drain by 1. Sit unit on something to elevate it high enough to put a container underneath to catch water. Make sure to sit unit on something very sturdy or take it outside and let it drain out on the ground, it's just water. 2. Remove cap and rubber plug. Water will drain. 3. Replace cap and plug when water stops draining, that is all.
Window units do not come with service ports. You can buy them at local parts houses, but unless you have the freon, not gonna do you any good. Window ac use either r22 our 410a, and that cannot be bout without being certified.
I will tell you that every brand has a different way of removing the front face cover. I sell the Haier Central Heat Pumps and Air Condioners and repair window units. Click Here for the user guide=> HWR10XCA
Most fronts come off after pulling the front cover facing from the top as the bottom is sitting into clips. Most are but you removed a screw fromsomewhere and it just may be only one tha keeps it snug so the cover will remain firm. Here is a link to=> Haier America and thier contact link=> Contact Us and their=> Hot Line
AMERICA & AUSTRALIA
U.S.A. & Canada
All Haier Products Hotline : 1-877-337-3639
Please rate my solution after I have helped you resolve the problem and communicate with me. I am offering my help to you free. If need you may contact me here on Fixya or my Forum=> Appliance 911 My contact information is located above the Fixya Ad on my blog here=> Sea Breeze Appliance Parts and Technical Services, www.pcappliancerepair.com Thanks, Sea Breeze
If the water collection tank is full, it will not turn ON. Since you said the unit worked fine for one day and now it won't turn ON, more than likely, that's the problem. After draining the tank, the unit should reset itself and turn ON like it should.
The drain plug is on the rear of the unit, just above floor level. You can either drain it into a low sided pan or bowl that's capable of holding up yo a quart of water. O r roll the unit to a floor drain or outside to drain it. If you choose to drain it into a pan, turn the unit OFF & unplug it, before draining it.
I hope this helped you and thanks for choosing FixYa
Yes, it must be vented to the outside, even if you're using central AC, too. The reason being is if you don't vent it to the outside, the hot air and humidity that normally goes thru the duct and out the window, will stay in the house and your Central AC will have to run longer and harder to overcome this rise in heat and humidity. In addition, the room that the portable AC is in, will get extremely hot & humid.
Is this reset on the plug? if so its likely bad, bypass and test, if it works get another end or wire to a fused disconnect which would be jn place of, unorthodox, but safe.
Hello, some window units do not have a drain hole for the condensate, instead the use the fan blade to sling the water on the condenser, since the condenser is warm/hot it will evaporate the condensate.