SMC Networks HRR030-A-20 Series Operation Manual page 119

Alarm
Description
No.
AL01 Low level in tank
AL02 Low level in tank
AL04 Water leakage
Circulating fluid
AL09
discharge pressure rise
AL10 Flow rate decreased
Ambient temperature is
AL11
*3
out of the range
Electric conductivity
AL12
*4
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
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 Selectable from OFF / WRN / FLT * 2 Selectable from WRN / FLT
* 3 Only air-cooled type can be set
* 4 Option DM 【With electric conductivity control function , DI water (pure water) piping】 only. When
entering the range, the alarm is released automatically.
* 5 Selectable from OFF / WRN
HRR Series
Table 7-1 Alarm code list and Troubleshooting
Display unit
Initial
Upper stage Lower stage
value
（White） （Green）
FLT AL01 LOW⇒LEVEL⇒FLT
WRN AL02 LOW⇒LEVE⇒WRN
1
WATER ⇒ LEAK
AL04
WRN
*2 HIGH ⇒ PRESS
AL09
FLT
*1
AL10 LOW⇒FLOW⇒WRN
WRN
*1
AL11 AMB⇒TEMP⇒OUT
OFF
*5
DI ⇒ ERROR
AL12
WRN
*1
AL13 TEMP⇒READY⇒ERROR
OFF
*1
AL14 TEMP⇒OUT.HI
OFF
*1
AL15 TEMP⇒OUT.LO
OFF
FLT AL17 LOW⇒FLOW⇒FLT
TEMP ⇒ FLT
FLT AL18
FLT AL19 RET⇒TEMP⇒FLT
FLT
AL21 HIGH⇒PRESS⇒FLT
FLT
MEM ⇒ ERROR
AL24
*1
FLT
INP1 ⇒ ERROR
AL25
*1
FLT
AL26 INP2 ⇒ ERROR
FORCE ⇒ STOP
FLT AL27
*1 MANT ⇒ ALARM
AL28
OFF
*1
COMM ⇒ ERROR
AL29
WRN
FLT AL30 REF⇒ERROR⇒0000
FLT AL31 SENS⇒ERROR⇒0000
FLT AL32 CTRL⇒ERROR⇒0000
Chapter 7 Alarm Notification and Troubleshooting
Cause / Remedy
(Press the reset key after eliminating the cause.)
Fluid level shown by the fluid level meter has fallen.
Add circulating fluid.
Circulating fluid leakage inside the unit is suspected.
Piping resistance increased. Check the opening of the valve,
pinching or blockage of the piping or clogging of the filter.
Check the installation environment. Clean the dust filter of the
ventilation.
Replace DI filter.
Overloaded, cooling failure, insufficient circulating fluid flow rate,
large fluctuation of the heat load, etc.
Increase the flow rate through the chiller. (Adjust the by-pass
valve)
Displayed flow rate: 2LPM or less, piping is thin, external valve is
closed, pinching or blockage of the piping or clogging of the filter.
o
Discharge temp.: 45 C or higher. Overload, cooling failure,
insufficient flow rate, etc. Increase the flow rate through the
chiller.
(Adjust the by-pass valve)
o
Return temp.: 45 C or higher. Insufficient chiller flow rate,
overload, etc. Increase the flow rate through the chiller.
(Adjust the by-pass valve)
Displayed pressure: 0.5MPa or higher. Connect piping so that
the pressure is 0.5MPa or less. Adjust the bypass valve.
Turn off the power supply switch and restart.
If the error occurs again, ask for service.
Contact input has been detected.
Isolated operation of the pump is stopped (press "RUN/STOP"
key for 5 seconds).
Notice for maintenance, perform maintenance for part for which
alarm is generated.
No request message from the host computer.
Try to send the request message again.
Error occurred in the refrigerated circuit. Ask for service.
An error occurred in a sensor. Ask for service.
An error occurred in the controller. Ask for service.
HRX-OM-W002
7.3 Troubleshooting
7-5