No lights in any mode of thermostat, emergency, heat, auto, on; nothing, fuse looks good, circuit breaker good, switches intact at fan unit and furnace. Drain pipe cleared with bleach water, filter clear.
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Re: no air conditioning unit inop
You lost your 24v check the transformer at the furnace at R and C treminals see if you have 24v if not your transformer is gone but you also have to have the door switch on the blower section closed and check incoming power as well
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Try to find the circuit breaker or the fuse box and find the circuit breaker or fuse that controls the AC and flip it off, until you are able to get this repaired.
Most often, when this happens, it is a short circuit that has damaged the controls of the A/C or the thermostat. ( Such as a lightning hit) God bless our efforts.
one half of the breaker you moved is not making contact in the panel or moving the breaker caused the fan relay to be on the same 115 volt leg as the power leg. If the breaker is connected to two points in the panel and you have 115 volts on each side of the breaker (230 volts) You can move the breaker one notch higher or lower or switch wires on the breaker to correct the circuit.
Split system Air conditioners are very often on two or more separate breakers, with a control voltage (24vac commonly) connecting their operation. the condensor unit and out-door fan generally on a 220 vc 'paired' breaker, possibly a quick disconnect near the unit with fuses inside, or an independant breaker pair, and the evaporator unit with INDOOR fan on a 110 or 220 vac breaker.
switch the fan to 'ON' at the thermostat... this is the midpoint of the system electrically. If the fan comes on check for voltage at the condensor unit. a check to see if the thermostat is the problem... remove the thermostat and connect the red, green and either the white or yellow wires (not both) if you chose white you should have heat...yellow AC...
most split system AC have a small buss fuse on the control circuit board of the indoor unit. looks like a glass tube with metal caps held by metal clips. In 40+ yrs experience I have found it is more likely one or both of the 30 amp buss fuses near the outdoor unit (replace both even if one is still ok) or a 30 amp breaker in the quick disconnect box.
In many systems the control voltage to the thermostat derives from a transformer in the outdoor unit... it could be as simple as a broken wire. Without a full diagnostic, a complete description of the unit ( AC or heat pump, etc) this is all speculation
the fan fill come on with the sequencer (stack switch you call it) it will also come on with the fan relay. on some goodmans the fan relay is the black box on the circuit board. use a jumper to jump red to green, this should bring the fan on sounds like you could have a broken green wire, try using a different wire instead of green
You most likely have a small 3 or 5 amp fuse on the circuit board on the indoor unit that has blown. You should turn the power off at the main breaker panel and open the cover and very carefully look for a small blown fuse. It will look like one that you use in your car. Then if it is blown, replace it with the exact same size and rating.
could be either a fuse on the furnace circuit board, broken thermostat wire or an error code stored on furnace circuit board. look for a small viewing port on the furnace. look into it for any lights. if you have an error code it will blink out a number code. if so, look on the reverse side of the front panel near the wiring diagram for a diagnostic code. check circuit board for small glass fuse and make sure it is good. take thermostat wires at thermostat and jump w and r terminals together. if it works, bad thermostat. if not, bad wire or circuit board on furnace.
Hello,Good job with description.Something is keeping the condenser off(saftey).Do you have an emergency heat setting on the therm.It will run electric heat strips only until service can check it out.Very rare that the disconnect switch (black box) is it.Need electrical meter to prove it out.
Does this problem happen when the temperature is below 30 degrees? When it gets about that cold outside, the air outside is too cold for the heat pump to "steal" heat from. On the thermostat you'll find a switch labeled aux or emergency heat. Turning this switch on will operate a traditional coil heater inside the system, providing you with heat. The only downfall to this is that it uses more energy to heat this way. Try turning the fan switch from "auto" to "on". If the fan comes on, then we can rule that out. If the aux heat switch is NOT on, set the thermostat such that the system will try to heat. If the outside unit is running, the problem is either it being too cold like I said earlier, or there's a problem with the heat pump's mechanical system that needs to be serviced by a professional. If the outside unit doesn't run but it should be, check it's breakers at the panel, the breaker inside the electrical box that feeds it, and look to see if there's a reset button on the unit itself. Finally, check the air handler (part of the system inside with the fan in it) to see if there's any circuit breakers or fuses on this unit. Make sure they're not tripped/blown. If none of this helps, you definitely want to get a pro to work on your system.
Two things, first go up to the heater and check the fuse inside the heater, looks like a car fuse. If that is not popped, then go outside to your AC unit and pull out the emergency disconnect. Check those fuses with a multimeter. IF you do not get anything replace those fuses, It has nothing at all to do with your thermostat.
Door safety switch. You are sure you have power to furnace? jump out the G and R terminals on the furnace control board or turn your thermostat to Fan On to check. Make sure the door safety switch is in the closed position. Fan should come on. No fan, no power to unit. Check Emergency switch, circuit breaker and there may be a fuseable link in the wiring somewhere either above the unit or a condensate safety switch. Get power to the unit. Also check to see if there is a small fuse in the wiring inside the furnace or on the circuit board.