A/C being tempermental - General HVAC Discussion - HVACSite

A/C being tempermental

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Old 06-13-2018, 08:18 AM   #1
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Trade: Facility Manager
Join Date: Jun 2018
Location: Nashua NH
Posts: 1

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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