I live in Florida and I have a 12 year old Janitrol unit. The indoor air handler unit has developed an intermittent humming sound. The unit works and the fan operates and seems to spin freely. When the humming develops turning the fan off does not stop it. Only turning turning power off at the CB will stop the humming. And when the power is reapplied the humming does not instantaneously start up. It may start a little later or not. It does not seem to be tied to the fan operation. The humming is accompanied by a slight vibration off the fan housing. The only other thing attached to the fan housing is a capacitor (12.5 uf, 370 VAC). Could the cap be the problem? Thanks.
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If you mean that your OUTDOOR AIR CONDITIONER FAN MOTOR is blowing AND no air is coming out of the vents within your house, it clearly indicates to me that 1 of 2 things are wrong.
Either (1) your INDOOR AIR HANDLER is NOT running or (2) the INDOOR AIR HANDLER is running but your PLENUM has come apart.
If your INDOOR AIR HANDLER UNIT is NOT running, it could simply be the circuit breaker is OFF/TRIPPED and simply needs to be turned OFF; then turned ON. If that does not FIX your problem, then it is most likely your 5 micro-farad run capacitor for your indoor fan motor needs to be replaced. It will prevent your indoor fan motor from energizing. Worst case scenario would be your INDOOR FAN MOTOR has windings burnt and needs to be replaced. If your indoor air handling unit is equipped with a CONDENSATE VALVE CUT-OFF SWITCH, check to see if your drain pan is filled, thus energizing the switch. If the CONDENSATE VALVE CUT-OFF SWITCH is ENERGIZED, it will prevent the AIR HANDLER FROM energizing. That is the design and the reason for this valve.
Marion, if there was a lightning strike and then a power surge when the power came back ON, I don't doubt what the servicemen had to say. The age of the unit plays no role in it, when something like this happens. Power surges can be killers to electrical appliances. That's why it always wise to turn the unit off during a power outage. Just ask anyone who was in Irene's path a couple of weeks ago. Power went out for days & weeks for some, when it came back ON, electrical appliances were damaged or ruined or started house fires.
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Hi, yes the number you are showing me 036 indicates its a 3 ton unit. For every ton of cooling, you will have 12,000 btu's of cooling. 36 divided by 12=3 ton unit. Its showing me also its a Ruud Handler 2.0 ton which would be a Model# UACC-024JAS? If your mobel number is the one you gave me, UACC-036JAS, this is a 3 ton unit, absolutely no questions. I hope I have been of help to you. I am a licensed air conditioning / Refrigeration /Heating Contractor. Let me know if I have been of help. Sincerely, Shastalaker7 PS If this is a split system with the indoor air handler and condenser outdoors, both coils must be the same tonnage for it to work for you properly. You can't have a 2 ton indoor evaporator coil with a 3 ton condensing unit.
I could not find a "fault code" list for the LA125HV but for thier Multi Split Units LG lists code CH7 (C7) as "Indoor Unit is Set in Different Cool/Heat Operation Mode." So maybe your air-handler tihinks it's in Heat mode will the compressor is in Cool mode, or vice-versa....
Check the name plate amperage on the air handler. The air handler only has the blower motor as its main current draw. #12 wire is rated for 20 Amp service. If the amp draw by the unit supplied by the disconnect is under 15 amps it should be fine (but) once again check the name plate for ampacity rating.