AC unit LWHD 1800R won't turn on & test/reset does not respond.

You have to try resetting the system. First turn the breaker off for the condenser and wait about 20 seconds. After you turn it back on the system should reset. Air Conditioning Tamarac

did you verify that you have 110VAC between the neutral/ground terminal at the outlet? Most units require the ground/neutral leg for 110volt controls. Be sure that you hooked up a "hot to each leg and that you have 220/230/240 between the Hot legs and 110 between each hot and ground/neutral. hope this helps

Is unit still under warranty? If so call manufacturer And request new board and is there a board for outdoor unit? If so, get one of those too. Tell them U will return unused parts. replace outdoor board first and check. replace indoor board and test.

Read your manual

What was the voltage that you measured? Are the units 220 volt or 120 volt. Units that size are usually fed by 220 volts. What is the current rateing of the circuit breakers? Are they a double breaker with a handeling capacity of 20 amps or are they 15 amps.

You didn't mention if they ever worked? Are you feeding 120 volts or 220 volts to the two units?

Good luck,

Marty

You can turn off the Thermostat, and the powers switch on the furnance and turn the breaker off in the breaker box wait about 20 - 30 minutes and turn the breaker back on, and the power to the furance back on and the thermostat, this should reset the system.






Melvin
St Louis

The 18,000 btu A/C is 230 volts, are you sure the 12,000 btu unit is 230 volts most are 120 volts.
Usually 12,000 btu is the biggest 120 volt A/C you can buy.

get a yellow tester from homedepot, it has three lights [ amber amber red ] hat tell you what you have at the plug. takes out all the guess work. you will love
good luck
saw

I checked wiring on my other 17,000 BTU Hampton bay AC & noted there was no overload switch wired into capacitor. So i just removed the burnt out overload switch which was causing a ground & blowing breaker. I noted it was not wired in between the compressor circuit but just attached to the compressor terminal & common terminal on capacitor. I guess it is a sacrafise type device that saves the compressor from burning out on overload. Anyway The AC worked fine with the burnt overload switch removed. It has been runnning 2 days now with no problems. I however did replace the capacitor with a new one. You can use either an oval or round capacitor as there is ample room. Just make sure your cap. values match old one. I will probable try & purchase a new overload switch if possable & install it at a later date, for the extra protection.
Angelo V.

i have a lg lwhd 1200hr window ac the heating system dont work . it blow cold air out not heat. can you help me