SMC Networks HRR050-A 20 Series Operation Manual page 123

Alarm
Description
No.
AL01 Low level in tank
AL02 Low level in tank
Phase loss/ phase
AL03
reverse error
AL04
Water leakage
AL05
Pump Inverter error
AL06
Internal fan stop
AL07
Fan Inverter error
Circulating fluid discharge
AL09
pressure rise
AL10
Flow rate decreased
Ambient temperature is
AL11
out of the range
Electric conductivity
AL12
8
increase
AL13 NOT TEMP READY
Circulating fluid
AL14
temperature increase
Circulating fluid
AL15
temperature decrease
AL17
Low flow rate
High circulating fluid
AL18
discharge temp.
High circulating fluid
AL19
return temp.
High circulating fluid
AL21
discharge pressure
Low circulating fluid
AL22
discharge pressure
AL24 Memory error
Contact input 1 signal
AL25
detection
Contact input 2 signal

AL26
detection

AL27 Forced stop

AL28 Notice for maintenance


AL29 Communication error

AL30 Compressor circuit error

AL31 Sensor error
AL32 Controller error

1 400V type only.
* 2 Not generated for options Z.
3 Select from OFF/ WRN/ FLT.
4 Water-cooled type only.
5 Air-cooled type only.
6 Select from WRN/ FLT.
7 Not generated for options Z and Z1.
8 Option DM (With electric conductivity control function, Applicable to DI water piping) only. Alarm is
automatically released when the electric conductivity returns within the range.
9 Air-cooled type only. Select from OFF/ WRN.
10 Not generated for 200V type options Z and Z1.
HRR Series
Table 7-1 Alarm code list and Troubleshooting
Initial value
Upper stage
（White）
FLT AL01
WRN AL02
FLT AL03
*1
2 3
AL04
WRN
*1
WRN AL05
*4
WRN AL06
*1*5
WRN AL07
6
AL09
FLT
7 3
AL10
WRN
3
OFF AL11
5
9
AL12
WRN
3
AL13
OFF
3
AL14
OFF
3
AL15
OFF
7 3
AL17
FLT
FLT AL18
FLT AL19
FLT AL21
FLT AL22
FLT AL24
3
AL25
FLT
3
AL26
FLT
FLT AL27
3
AL28
OFF
3
AL29
WRN
FLT AL30
FLT AL31
FLT AL32
Chapter 7 Alarm Notification and Troubleshooting
Display unit
Lower stage
(Press the reset key after eliminating the cause.)
（Green）
LOW⇒LEVEL⇒FLT Fluid level shown by the fluid level meter has fallen.
Add circulating fluid.
LOW⇒LEVEL⇒WRN
The phase of the power line is connected by
PHASE ⇒ ERROR
incorrect phase.
WATER ⇒ LEAK
Circulating fluid leakage inside the unit is suspected.
Check that there is no abnormality with the power
supply system (e.g. ground fault, short-circuit, voltage
PUMP ⇒ INV
fluctuation, abnormal interphase voltage, open phase,
surge).
FAN ⇒ ERROR
Check for fan rotation.
Check that there is no abnormality with the power
supply system (e.g. ground fault, short-circuit, voltage
FAN ⇒ INV
fluctuation, abnormal interphase voltage, open phase,
surge).
Piping resistance increased. Check the opening of the
HIGH ⇒ PRESS
valve, pinching or blockage of the piping or clogging of
LOW⇒FLOW⇒WRN the filter.
Check the installation environment. Clean the dust filter
AMB⇒TEMP⇒OUT
of the ventilation.
DI ⇒ ERROR
Replace DI filter.
TEMP⇒READY⇒ERROR
Overloaded, cooling failure, insufficient circulating fluid
flow rate, large fluctuation of the heat load, etc.
TEMP⇒OUT.HI
Increase the flow rate through the chiller. (Adjust the by-
pass valve)
TEMP⇒OUT.LO
Displayed flow rate: 5L/min or less(For 400V type
options Z and Z1:Less than 7L/min), piping is thin,
LOW⇒FLOW⇒FLT
external valve is closed, pinching or blockage of the
piping or clogging of the filter.
Discharge temp.: 45
TEMP ⇒ FLT
failure, insufficient flow rate, etc. Increase the flow rate
through the chiller. (Close the by-pass valve and adjust)
Return temp.: 45
RET⇒TEMP⇒FLT
rate, overload, etc. Increase the flow rate through the
chiller. (Close the by-pass valve and adjust)
Displayed pressure: 0.5MPa or higher. Connect piping
HIGH⇒PRESS⇒FLT so that the pressure is 0.5MPa or less. Adjust the
bypass valve.
Displayed pressure:0.03MPa or less.
LOW⇒PRESS⇒FLT
Check that the pump has not stopped.
Turn off the power supply switch and restart.
MEM ⇒ ERROR
If the error occurs again, ask for service.
INP1 ⇒ ERROR
Contact input has been detected.
INP2 ⇒ ERROR
Isolated operation of the pump is stopped (press
FORCE ⇒ STOP
"RUN/STOP" key for 5 seconds).
Notice for maintenance, perform maintenance for part
MANT ⇒ ALARM
for which alarm is generated.
No request message from the host computer.
COMM ⇒ ERROR
Try to send the request message again.
REF⇒ERROR⇒0000 Error occurred in the refrigerated circuit. Ask for service.
SENS⇒ERROR⇒0000 An error occurred in a sensor. Ask for service.
CTRL⇒ERROR⇒0000 An error occurred in the controller. Ask for service.
HRX-OM-X071
Cause / Remedy
o
C or higher. Overload, cooling
o
C or higher. Insufficient chiller flow
7.3 Troubleshooting
7-5