SMC Networks HRS012-A*-10-* Operation Manual page 133

Code Descriptioin
AL01 Low level in tank
High circulating
AL02
discharge temp.
Circulating fluid discharge
AL03
temp. rise
Circulating fluid discharge
AL04
temp.
High circulating fluid return
AL05
temp.
High circulating
AL06
discharge pressure
AL07 Abnormal pump operation
Circulating fluid discharge
AL08
pressure rise
Circulating fluid discharge
AL09
pressure drop
High compressor
AL10
temp.
Low compressor
AL11
temp.
AL12 Low super heat temperature
High compressor discharge
AL13
pressure
Refrigerant circuit pressure
AL15
(high pressure side) drop
Refrigerant circuit pressure
AL16
(low pressure side) rise
Refrigerant circuit pressure
AL17
(low pressure side) drop
AL18 Compressor overload
∗ 2
AL19
Communication error
AL20 Memory error
AL21
DC line fuse cut
Circulating fluid discharge
AL22
temp. sensor failure
Circulating fluid return temp.
AL23
sensor failure
Compressor
AL24
sensor failure
Circulating fluid discharge
AL25
pressure sensor failure
Compressor
AL26
pressure sensor failure
Compressor intake pressure
AL27
sensor failure
AL28
Maintenance of pump
∗ 3
AL29
Maintenance of fan motor
AL30 Maintenance of comprssor
HRS Series
Table 6-1 Alarm code list and Troubleshooting (1/2)
Operation
Stop
fluid
Stop
Continued
Continued
Stop
fluid
Stop
Stop
Continued
Continued
intake
Stop
intake
Stop
Stop
Stop
Stop
Stop
Stop
Stop
∗ 2
Continued
Stop
Stop
Stop
Stop
intake temp.
Stop
Stop
discharge
Stop
Stop
Continued
∗ 3
Continued
Continued
Chapter 6 Alarm indication and trouble shooting
(Press the reset key after eliminating the cause.)
The fluid level has fallen below the level indicator. Fill the
∗ 1
circulating fluid.
・Ensure that the circulating fluid flow is 5l/min.or more.
・Reduce the ambient temperature or heat load.
∗ 1
・Wait until the temperature decreases.
Check the ambient temperature condition and the
∗ 1
temperature of supplied circulating fluid.
・Ensure that the circulating fluid flow is 5l/min.or more.
・Check the heat load are within the specified range.
Check the user's piping for bends, squash and foreign
matters.
Restart and check the pump is operating.
Check the user's piping for bends, pinching or blockage by
∗ 1
foreign matters.
・Restart and check the pump is operating.
∗ 1
・Ensure that the tank level is within the appropriate range.
Check the temperature of the circulating fluid returning to
the product.
・Check the circulating fluid flows.
・Check the circulating fluid in the evaporator is not frozen.
・Use a 15% ethylene glycol aqueous solution if operating
with a set temperature lower than 10
Reduce the ambient temperature or heat load.
・Check the ambient temperature is within the specified
range.
・ It is possible that refrigerant is leaking. Ask for the
service.
Reduce the ambient temperature or heat load.
Check the circulating fluid flows.
Leave for 10 minutes and restart, and check the
compressor is operating.
The request message from the host computer has not
∗ 1
arrived. Send it again.
Written data is different from read data. Ask for the service
of RAM.
DC circuit fuse of the communication connector for the
contact input/output is short circuited.
∗ 1
Ask for the service of the fuse of the DC circuit.
Confirm there is no incorrect wiring or load of 500mA or
larger.
The temperature sensor is short-circuited or opened.
Ask for the service of the temperature sensor.
The pressure sensor is short-circuited or opened.
Ask for the service of the pressure sensor.
The timing of a periodical check is informed.
Recommended to ask for the check and service of the
pump, fan motor and compressor.
*Refer to''5.17 Accumulated time reset function''.
HRX-OM-M090
Cause / Remedy
o
C.
6.3 Troubleshooting
6-5