Question about Haier Heating & Cooling
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Posted on Jan 02, 2017
I have 2 Ruud Achiever 90 Plus UGRK's. Units were install in 2004. One unit flames' out after ignition just prior to the fan kicking in. Confirmed gas value is functional by switching valves. Check wire connections. Could it be the remote sensor or another 24 volt sensor at the IFC that locks out the gas valve?
Posted on Apr 10, 2008
The door closed or open should have no effect. The draft motor runs, no power to the glow plug or it is open,
The first place to look is at the furnace brain, a box located somewhere in the unit connecting to the gas valve, look at this brain [controller] and there should be a light of series of lights.
On the box itself there should be a matrix of codes such as: green light flashing= bad glow plug, or red, bad controller box, do you have anything like this?
Most have some sort of led light that narrows down the problem.
If not at least do these things:
make sure the power is off, and that the blower motor spins by hand freely.
next if you have a volt ohm meter, you can test the plug to see if there is a circuit, if the glow plug is open, that is one problem,
If you have a volt meter you can measure the leads at the plug to see if voltage is there or not.
There are so many checks and switches that will operate dependent on the operation of something else.
Unplug the furnace and keep the power off the brain, if so equipped for several minutes, see if it resets.
If it does great, if not tell me if there is a brain box and what the lights are, and what the matrix of light codes say, and we can go from there.
You can also measure for voltage from the thermostat to the furnace and make sure it is getting a signal on all wires, a thermostat wire could have come loose.
very difficult to troubleshoot a furnace when one is in front of it, let along without seeing it.
If you find no box, let me know, and let me know from these checks above if anything changes, or gives you more info to pass on to me.
Step at a time we can find this, a volt ohm meter will be really helpful.
Posted on Nov 22, 2008
SOURCE: Clunk noise Ruud Furnace
I had the same problem, the motor shaft and bearings were going bad. There was about 3/16" travel on the shaft that the blower attaches to. I replaced the motor myself and it runs nice and quiet. I have had that noise that you describe for over 8 years, but it got real noisy about a week ago. I talked to the maintance department about it where I work and they said the motor bearings were probably going bad. They were right, I took the motor out of the furnace and they took it to a parts store and got me a new one $270.00 for it. It is a special motor due to the fact that the frame mounts bolt directly onto the motor housing. Make sure if you do this job yourself that you take the motor to the parts store so that they can match it up. The guy at the store told our maintance man if it didn't require the bolt holes in the motor housing it would have been $100.00 cheaper.
Posted on Dec 24, 2008
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