A/C unit not running
#1
04-05-21, 10:43 AM
A/C unit not running
Need Help With A Medallion Nordyne AC Unit Model MT5BD-036K 3TON not turning on but blower and thermostat runs inside
#2
04-05-21, 03:27 PM
Member
Fire thing to check would be a call for cooling at the condenser. And to check for power at the contactor.
#4
04-05-21, 07:25 PM
Member
Breaker is probably tripped. Reset it. May be an electrical issue causing the trip like a grounded compressor.
#7
04-06-21, 07:22 AM
It is the meter box thats attached to the house and has a main power switch and a switch for the ac unit. Will change breaker and hope that is what it is thanks....
#8
04-08-21, 04:20 AM
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If the fan is blowing, but the air seems warm or just not cool, check to see if your thermostat is set to “on” or “auto”. If it’s set to “on”, that means that the fan will stay on all the time, even when your air conditioner isn’t actually cooling your home.
This setting helps circulate air throughout your home but can lead people to think that their AC is blowing warm air (and also use much more energy). Change your thermostat to “auto” if it’s currently set to “on” to avoid this.
This setting helps circulate air throughout your home but can lead people to think that their AC is blowing warm air (and also use much more energy). Change your thermostat to “auto” if it’s currently set to “on” to avoid this.
#12
04-11-21, 08:35 PM
Member
Pushing in the contactor shouldn’t have caused any damage. You have other issues going on with your system.
What is the coil voltage? What is load side voltage? Does anything read shorted or grounded?
What is the coil voltage? What is load side voltage? Does anything read shorted or grounded?
#13
04-12-21, 08:28 AM
When smoke comes out of a 240 v. A/C device, and you don't know why, it is time to consult an HVAC service person, not an internet expert.
I have years of experience wiring houses to code, and I could probably diagnose and fix a similar problem if it happened to me. But I wouldn't do it, and I certainly wouldn't advise someone on line to do that. I'd call for help of the paid/licensed/insured variety.
Not to mention that the service person probably has access to factory diagnostics, equipment, parts, and probably a hotline number to call for help.
I have years of experience wiring houses to code, and I could probably diagnose and fix a similar problem if it happened to me. But I wouldn't do it, and I certainly wouldn't advise someone on line to do that. I'd call for help of the paid/licensed/insured variety.
Not to mention that the service person probably has access to factory diagnostics, equipment, parts, and probably a hotline number to call for help.
Last edited by I Mullins; 04-12-21 at 09:02 AM.
