Is it a ALS? It means the compressor is not pumping. Check the breaker for compressor, the little black relay could be bad for that compressor. If it has soft start check to see if it is in alarm. Compressor could be shelled out.
if it was stuck open the compressor would still pump, if it only does it once in a while swap the relay with the alarm relay and see if problem goes away. if your expansion valve is stuck open you better replace it.
I assume you have a ALS chiller. What is your model number? If it is a ALS it would be the relay for that compressor. IT should be labeled. The ALS has a relay board with a bunch of black relays, they are replaceable. Also the ribbon cable should be checked.
yes it is an ALS chiller i will look at the relay on monday thanks.
Isolate the compressor and recover the pressure from it, then pull the gate rotor inspection cover and check the condition of the rotor liners or inserts or whatever they are called. They should not be pitted and the edges should be sharp and not rounded off. Has that circuit ever had a compressor failure prior to this event?
Low Pressure Forever!
If you know heavy metal, you can work anywhere-Dave Andreson
Anchors Aweigh my boys, Anchors Aweigh!
Farewell to foreign shores, We sail at break of day. Through our last night on shore, Drink to the foam. Until we meet once more. Here's wishing you a happy voyage home!
don't know fri was the first time the customer let me look at this chiller has had another contractor trying to fix this problem for more than 2 years. I take care of all his other chillers so he wanted me to look into this one and see if i can get it fixed.