Bryant 3ton system with code-system malfunction

Old 06-07-21, 04:37 PM
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Bryant 3ton system with code-system malfunction

Itís a 598BNX036 and it has a circuit board in the condenser communicating woh the Evolution t-state and furnaceÖ. Iím beat and would like to just bypass all that extra bull crap so it will just runÖ. What do I doÖ also I have 3 capacitors and 2 single pole contractors in one for high and one for low and itís a heat pump
Old 06-07-21, 05:34 PM
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Welcome to the forums.

Moved you to your own thread.
I am familiar with communicating systems. It is not always easy to just remove them.
I'm trying to locate some wiring info.
Old 06-07-21, 06:39 PM
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Ok thank you I definitely need the help

But sometimes I get it to start by unscrewing the red wire of off the circuit board in the condenser then back in but my cond. fan wonít work as it hasnít been running from the beginning of my service call.
Old 06-11-21, 11:36 AM
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Before you fix it? Make sure it's broken. No one has agreed with you that it needs to be bypassed.

That unit: protects your home, protects your unit from damage (ie, from low freon), and lessens your electric bill (it may implement variable speed fan control)


I'm unsure of your goal. Are you trying to bypass to TEST your AC components or to connect an old fasioned (honeywell thermostat)?

and let's consider the price of replacing a board if that really is the cuplrit: if that really is your problem (and i doubt it), you can probably find one somehow

If your TESTING, then you don't need ANY bypassing. You only need to look at the wiring diagram on your outdoor unit. Assuming we're talking AC, look for that part about "contactor", find it, depress it, your fan and compressor will turn on. (i assume that since you said 3 capacitors, since a blower fan, which obviously should be running on low speed already, has 1 or 2 caps)

Old 06-19-21, 06:54 PM
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The system malfunction will likely still be present if you were able to bypass the communicating controls.

You may be able to identify the malfunction at the thermostat.

Push and hold the advanced button for over 10 seconds to enter the service menu.
Scroll down to get to "Service" information.
Select "last 10 system events".

If it tells you that you need a blower motor then bypassing the user interface (thermostat) would not help.

PJmax voted this post useful.

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