Hitachi RCUE210AG2 User Manual

SMGB0003 rev.0 - 01/2007
pag. 141
Troubleshooting
5
5
5.3. Analysis and countermeasure of abnormal running
Chiller unit has various kinds of protection devices. When the operation status is not correct due to the activation of
some protection device, refer to the table below and fi nd out the main reason to apply a countermeasure.
One failure can affect other different conditions. Thus, do not check only 1 point but analyze it from overall viewpoint
in detail.
Phenomenon
Cause
Check Point
Countermeasure
It does not
run when
operate
Power Failure
Measure voltage by tester.
Wait the recovery of power source
Power is OFF
Check power switch.
Power Switch ON
Fuse for
power
source is
melted
Wiring Short Circuit
Check falling of wiring coating.
Eliminate short-circuit and replace
fuse.
fuse.
Wiring Earth Fault
Measure insulation resistance.
Eliminate the earth fault and replace
Eliminate the earth fault and replace
fuse.
fuse.
Compressor Motor Failure
Compressor Motor Failure
Compressor Motor Failure
Measure the interphase
resistance, insulation resistance.
Replace compressor and fuse.
Replace compressor and fuse.
Replace compressor and fuse.
Fan Motor Failure
Fan Motor Failure
Replace fan motor and fuse
Replace fan motor and fuse
Replace fan motor and fuse
Fuse for
operation
circuit is
melted
Wiring Short-circuit
Check falling of wiring device.
Eliminate short-circuit and replace
fuse..
fuse..
Earth Fault in Operation
Earth Fault in Operation
Circuit
Circuit
Measure insulation resistance.
Eliminate earth fault and replace fuse
Magnetic Contactor for
Compressor Motor Failure
Compressor Motor Failure
Measure the coil resistance.
Replace magnetic contactor and fuse.
Magnetic Contactor
Magnetic Contactor
for Fan Motor Failure
for Fan Motor Failure
Magnetic Contactor
Magnetic Contactor
for pump motor Failure
for pump motor Failure
Auxiliary Relay Coil Failure
Auxiliary Relay Coil Failure
Auxiliary Relay Coil Failure
Replace auxiliary relay and fuse.
Replace auxiliary relay and fuse.
Replace auxiliary relay and fuse.
Solenoid Valve Coil Failure
Solenoid Valve Coil Failure
Solenoid Valve Coil Failure
Replace solenoid coil and fuse.
Replace solenoid coil and fuse.
Replace solenoid coil and fuse.
Printed Circuit Board Short-
Circuit
Conductive Foreign Particle.
Remove the particle and replace fuse
Crankcase Heater Failure
Crankcase Heater Failure
Crankcase Heater Failure
Measure resistance.
Measure resistance.
Replace oil heater and fuse.
Replace oil heater and fuse.
Replace oil heater and fuse.
Trans Coil Failure
Measure the transformer
Measure the transformer
secondary voltage.
secondary voltage.
Replace transformer.
Remote Control Wiring Incorrect
Remote Control Wiring Incorrect
Remote Control Wiring Incorrect
Remote Control Wiring Incorrect
Remote Control Wiring Incorrect
Remote Control Wiring Incorrect
Remote Control Wiring Incorrect
Wiring
Wiring
Change wiring.
Change wiring.
Change wiring.
R, S, T phase of power source is phase
R, S, T phase of power source is phase
R, S, T phase of power source is phase
R, S, T phase of power source is phase
failure or reverse phase. (05 alarm)
failure or reverse phase. (05 alarm)
failure or reverse phase. (05 alarm)
failure or reverse phase. (05 alarm)
Check the connection
Check the connection
of R, S, and T phase
of R, S, and T phase
Change to the correct phase.
Remote Control Switch Failure. Change-over
Remote Control Switch Failure. Change-over
Remote Control Switch Failure. Change-over
Remote Control Switch Failure. Change-over
switch of Printed Circuit Board is “Local” (40
alarm)
alarm)
Check changeover switch.
Replace remote control switch.
Turn changeover switch on “Remote
Printed
Circuit
Board
Failure
Wiring Connection Failure
Check the current by tester.
Repair the wiring connection
Printed Circuit Board Failure
Replace the Printed Circuit Board
Replace magnetic contactor for pump
Pump
Magnetic
Contactor
for Pump
Failure
(52P)
(52P)
Breaking of Coil
Measure the voltage of contact
point of magnetic contactor
Loose Connection
Pump stops
before
compressor
running
Pump
Over-
current
Relay
Activated
(TRP) (5P
Alarm)
Pump locked
Check water freeze, clogging
of foreign particle.
Remove it.
Pump Over-current
relay RC Value Wrong
Check the RC value and
pump running current.
Change the RC value or
replace magnetic contactor.
Pump over-current
relay failure
Push reset button
and check running current.
Replace magnetic contactor.

Hitachi RCUE210AG2 Specifications

General

Brand	Hitachi
Model	RCUE210AG2
Category	Chiller
Language	English