Economizer Pressure Sensor
refrigeration
Description
The Economizer Pressure sensor is out of range; the unit gives an alarm only and forces the economizer to STANDARD mode.
Activation Conditions
Economizer Pressure (ECOP) sensor is out of range.
Unit Behavior
Engine and Electric: Alarm only. Economizer forced to STANDARD mode when alarm is active.
Reset Conditions
Economizer Pressure sensor is in range or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check System Pressures - Check Unit Data. Compare the pressure readings for the ECOP, the CSP and the CDP. The ECOP should read between the CSP and the CDP. If not it indicates the ECOP has failed. 2. Place the Unit in Service mode. After the unit has equalized, compare the pressure readings for the ECOP, the CSP and the CDP. The ECOP the CSP and the CDP should all read within 5 PSI, if not it indicates the ECOP has failed. 3. Check Economizer Pressure Sensor - Inspect sensor and connectors. Verify there is no damage to sensor, and no damage, moisture, or corrosion in connectors.