EAS ELECTRIC ECH Serie Manual De Instalación página 79

Table 7-1
Error
Over high air expelling pressure and
air suction pressure
Compressor stops
Hi-voltage or Lo-voltage, signal phase
because of motor
or phase unbalance
Overcurrent.
Short circuit comes out from motor or
connecting interface
Overcurrent assembly error
Compressor stops
Over high or over low voltage
because of integrate
Over high air expelling pressure or
temperature sensor
excessive low air suction pressure
or air discharge
Component error
temperature protection.
Filter in front (or rear) of expanding
Compressor stops
valve is blocked
because of Lo.-pressure
Lo-voltage switch error
protection
Excessive low air suction pressure
Liquid refrigerant flows into compressor
Abnormal noise gives
from evaporator result in liquid slugging.
out form compressor
Aging of compressor
Overcurrent relay trip up, fuse burnt out
Control circuit without power though
Hi-voltage or lo-voltage protection
Compressor is unable
Coils in contactor are burnt out
to drive
Wrong connection of phase sequence
Water system error and flow type
volume controller short connection
Error signal delivered from wire controller
Air side heat exchanger 4-way valve or thermal resistor error
excessive frost
Air loop short-circuit
Fixing screws at panel are loosen
With noise
V.2
22
Possible reason
See "Over high air expelling pressure" and "Over high air suction pressure"
Confirm voltage not higher or lower than the rated voltage 20V
Confirm resistors at motor are connected corresponding to terminals
Replace a new one
Confirm voltage not higher or lower than the rated voltage 20V
See "Over high air expelling pressure" and "excessive low air
suction pressure "
Check the integrated temperature sensor after motor is cool down.
Replace a new filter
If the switch is defective, please replace a new one.
See "Excessive low air suction pressure"
Adjust refrigerant charge volume
Replace a new compressor
Replace damaged assembly
Check the wring of control system
Reference to mention in above the parts of air suction and discharge pressure error
Replace damaged assembly
Re-connect and adjust the any 2 wires among 3 phases
Check water system
Find out the error type and carry out the corresponding measure to settle
Check the running state. Replace a new one if necessary.
Settle the short-circuit of air discharge
Fix up all assemblies
Detect and settle measure