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22401@vector-8600mtmedium

MSM1 IN Low Voltage

electrical

Description

Voltage supply for the sensors on the input board is less than 4.5 VDC; the unit gives alarm only.

Activation Conditions

Voltage supply for the sensors on the input board is less than 4.5 VDC

Unit Behavior

Engine and Electric Operation: Alarm only.

Reset Conditions

Auto reset when voltage is correct, alarm reset or alarm may be manually reset by turning the unit off, then back on again.

Corrective Actions

1. Check System Pressures - Install manifold gauge set and check and compare compressor discharge, evaporator outlet & suction pressures with those shown in Unit Data. 2. Check Wiring - If a transducer reading is not within a reasonable range of gauge reading, check wires to sensors for short: 3. Replace Microprocessor/Stepper Module - Download data and replace MSM