A/C being tempermental

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Old 06-13-18, 06:40 AM
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A/C being tempermental

I am a new facility manager for a company and I am walking into a relativity new system that has been giving them problems since they finished construction. The other day we lost AC to one zone. I went to the roof to check on the unit and it was blowing off excessive heat compared to the other units. I shut the unit down for the night and went back in the morning. I checked the dampening control box and all 4 zones are coming up with red lights, HoneyWell HZ432, Cool 1 & 2 are green as well as the fan. If I select the purge option all go back to green until I hit confirm then they go back to red.

I restarted the unit and the air conditioning returned to the zone but all lights are still red. The system on the roof calmed down and is not blowing off excessive heat. I believe this is just a band aid to the issue so what I am trying to do is reach out and see if I can narrow down the issue so that if I have to call someone I can tell them exactly whats wrong. Please let me know if anyone can help I can provide more information if needed.

Side not: Thermostat says no signal above temperature.
 
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Old 06-13-18, 10:20 AM
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Have you contacted the service dept of the company that installed the equipment? Since they did the install, they should have all the information and troubleshooting for that unit. You might be able to get what you need without them having to come out. May be a software problem.
 
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Old 06-13-18, 12:10 PM
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Ill check there but as I talk to more people this has been an ongoing issue with multiple companies coming by to work here so I don't know if that is an avenue. But thank you
 
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Old 06-13-18, 01:36 PM
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Kinda sounds like the light is red when that zone has a demand and you thought it should be Green?

If the condenser fan is discharging excessive heat I would verify that the heat strips aren't pulling amperage, the outside air damper isn't wide open, the return air duct isn't broken, the return air entering the unit is very near the air temp in the space, and measure the delta tee.
 
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