A Goodman Janitrol 2. 5 ton Standard Air Handler model #ARUF030-00A-1. After troubleshooting, I discovered that the only way to shut the fan off is by turning off the breaker or disconnecting the black wire that leads from the fan to the circuit board. There are 5 wires connected to the fan. 2 (brown) go to the capacitor, 2 (red, black) to the circuit board and 1 (purple) to the contractor relay. After extensive trouble shooting I
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narrowed the problem to be with the black wire that leads from the fan to the circuit board because disconnecting that wire is the only way besides shutting off the breaker that stops the fan from running. With the black wire connected and all the other wires disconnected the fan continues to run but with the black wire disconnected and all the other wires connected the fan does not run. Am I correct with my assumption and if so does it mean that the whole board will have to be replaced Yeah, looks like you would have to replace the board. Or if you prefer, you could install a relay and make the fan go on and off with the thermostat. Boards usually cost 200 to 300 dollars, while a relay will cost you about 20 dollars. You are sure that the t stat is set to fan auto Did you recently replace the fan A fan continuously running on air handlers is usually a sequencer problem. (Unless it is a Goodman with the sequencer style fan control instead of the circuit board) A digital "meat" thermometer can help determine if we have a heat rise across the air handler with the thermostat turned off. (Pros would usually measure amperage) Houston204, before I posted to this site, I disconnected the the contractor relay which I just learned is called the transformer because I thought it was the problem and I reconnected the wires but I am not sure if I reconnected correctly because now the thermostat won`t turn on at the wall location. It...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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