I cleaned the outside unit and turned power back on along with thermostat-unit runs fine including compresser. Black insulated line from outside to inside is very cold and icy and water is leaking on and into furnace. After doing some research, I figured that either there is a leak or my unit is low on freon because air will blow for several minutes out of registers but very, very low airflow. Repairman came out and recharged unit but said blower motor is not working correctly because of a faulty circuit board which will cost $500. I'm skeptical because I've heard of some techs being scammers. Is this a possible solution or do you think the blower motor just needs to be replaced?
2007-08-29 04:44:18 · 7 answers · asked by fuzzbuzz 2 in Home & Garden ➔ Maintenance & Repairs
My mistake--My girlfriend said he didn't recharge freon yet(I'm at work).
2007-08-29 05:06:11 · update #1
unit is 6 years old.
2007-08-29 05:15:05 · update #2
I replaced new filter. So if I turn heat on and fan runs then faulty circuit board excuse is BS?
2007-08-29 05:20:38 · update #3
Called another company to come out for a second opinion.
2007-08-29 06:16:07 · update #4
Yes controls boards do go bad. Depending upon your equipment the fan speeds are controlled by the circuit board.Cooling is high speed, heating is medium to low and circulate mode is usually low speed if your system is so equipped. When fan motors stop working once, it is only a matter of time until they stop again, if it is a bad motor, and depending upon what is wrong with them as far as windings or bearings. Just double check the motor first by jumping out the fan relay on the board. If the motor starts up check the amp draws while running.When the motor turns off does it slow to a stop or stop quickly.Once stopped spin the motor and feel for a dead spot in it, or a tightness. The motor should spin freely.If the motor tests OK then check the board.Turn the system on and take voltage readings to the motor.Low voltage can cause the motor to spin slowly and overheat. The contacts in the fan relay on the board can pit and cause under voltage to occur. Then replace the board.Hope that helps. If you have a variable drive blower then they to can go bad.In that case you need further testing to see if it is the fan module or speed controller on the motor. I have replaced both styles before and will have more go bad in the future.Make sure you have a good service tech to do the diagnostics. Variable drives can be tricky.I've worked on many system types and have seen many weird problems. Nothing amazes me anymore.I wish only people with real knowledge would answer certain questions.
2007-08-30 14:45:56 · answer #1 · answered by candyman 4 · 0⤊ 0⤋
Did anyone clean the filter before they added refrigerant. Low refrigerant is rarely the answer. If it is low on refrigerant, then ther has to be a leak. Did he repair the leak? By law he is required to repair the leak.
FAULTY CUIRCUIT BOARD!!! HAHAHAHAHA.
That is so much BS. I don't believe that for a minute. The fan runs or it doesn't. If the high speed fan winding is energized then it has nothing to do with the circuit board. All that board does is turn the fan off and on. It does not control the speed. THAT IS A SCAM.
2007-08-29 05:10:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The motor can be tested in at least 2 ways:
1) Place the "Fan" switch on your thermostat to "ON" and your climate selector to "Heat". Check the fan's airflow.
2) By disconnecting its cable assembly from the system and make a test adapter cable to plug directly into the source voltage (read the label on the motor) 110 or 220 VAC.
I doubt if the board is bad, but it should be considered if the fan works fine when connected directly to the source voltage but not when connected to the system.
Good luck.
2007-08-29 05:07:24 · answer #3 · answered by Steven H 4 · 0⤊ 0⤋
You have a leak in either the compressor or the A coil which is inside. Depending on the age of the system, you may be better off replacing the whole thing with a new unit. The new ones will use a different freon than the old R-22 that will not be made much longer.
This would be a good time to upgrade the AC. I know it will cost, but with the price of electricity it may pay for itself over a period of time.
good luck.
2007-08-29 05:07:08 · answer #4 · answered by Fordman 7 · 0⤊ 2⤋
If there is ice formation it means there is freon or refrigerant if you will, it seems more of a problem with circulation equipment. Your repair man is most likely right on.
The problem with replacing old parts with new is that next other parts will not be able to withstand the power of new parts. A new A/C is advisable.
2007-08-29 04:57:37 · answer #5 · answered by JAN V 2 · 0⤊ 2⤋
It is possible but check out www.hvac-for-beginners.com . There is a page on air conditioner troubleshooting. It will take you step by step.
2007-08-29 05:07:38 · answer #6 · answered by Anonymous · 0⤊ 1⤋
try getting more freon... i think that repair man is scamming you... the circuit boards almost never break
2007-08-29 04:49:37 · answer #7 · answered by Michael 3 · 0⤊ 2⤋