SUMMARY This article describes how to fix a chiller system that, after startup, has a stopped compressor and a low pressure error. SYMPTOMS Low pressure (Lo1 or lo2) error message on microprocessor controller. After power up and compressor start, compressor stops before reaching the SP1 or SP2 set point and the micro processor indicated a […]
Chiller Problems – Microprocessor Low Flow error
SUMMARY This article explains how to fix your chiller when the compressor won’t run and there is a microprocessor low flow error. SYMPTOMS Low flow error message on microprocessor controller. Compressor will not run. CAUSE Micro-Processor “Low Flo” faults can be caused by: 1. Evaporator flow issues related to your pump. 2. Evaporator flow issues […]
Air Conditioning and Refrigeration Systems – Hot Gas Bypass
SUMMARY This article provides information as to how to limit the minimum evaporating pressure in air conditioning and refrigeration systems during periods of low load. RESOLUTION On many air conditioning and refrigeration systems it is desirable to limit the minimum evaporating pres-sure during periods of low load either to prevent coilicing or to avoid operating […]