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Check for proper refrigerant charge as the
system may be overcharged.
Check water for low flow.
Check EEV movement and functionality.
EVD Evo Low Evaporation
Temperature (LOP)
Check water flows.
Check refrigerant charge.
EVD Evo High Evaporation
Temperature (MOP)
Check refrigerant charge.
EVD Evo Low Suction
Temperature
Check refrigerant charge.
Check that the PLC is setup for the correct # of
stages, correct and cycle power to the system.
Low temperature temp switch tripped.
Check water flows.
Check refrigerant charge.
Electric Heat Run Hours
Exceeded
Clock Board Fault or Not
connected
Inverter model not
compatible
After 15
retries every
60 mins,
must be
reset
Manually
Make sure Power+ is being used
Check the load
Check network control devices and cables
Check the input voltage and rectify the
trouble.
Using a 1000 V megger, check the motor and
motor cables for ground faults.
Check the input and output circuits for phase
loss detection and rectify.
Check the condition of the motor and load
wiring.
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