SMC Networks HRS018-A 20 R Series User Manual

HRX-OM-W058
Chapter 7 Alarm indication and trouble shooting
HRS-R Series 7.3 Troubleshooting
7-5
Table 7-1 Alarm code list and Troubleshooting (1/2)
Code
Descriptioin
Operation
Cause / Remedy
(Press the reset key after eliminating the cause.)
AL01
Low level in tank
Stop
1
The fluid level has fallen below the level indicator. Fill the
circulating fluid.
AL02
High circulating fluid
discharge temp.
Stop
・Ensure that the circulating fluid flow is 5l/min.or more.
・Reduce the ambient temperature or heat load.
・Wait until the temperature decreases.
AL03
Circulating fluid discharge
temp. rise
Continued
1
AL04
Circulating fluid discharge
temp.
Continued
1
Check the ambient temperature condition and the
temperature of supplied circulating fluid.
AL05
High circulating fluid return
temp.
Stop
・Ensure that the circulating fluid flow is 5l/min.or more.
・Check the heat load are within the specified range.
AL06
High circulating fluid
discharge pressure
Stop
Check the user's piping for bends, squash and foreign
matters.
AL07
Abnormal pump operation
Stop
Restart and check the pump is operating.
AL08
Circulating fluid discharge
pressure rise
Continued
1
Check the user's piping for bends, pinching or blockage by
foreign matters.
AL09
Circulating fluid discharge
pressure drop
Continued
1
・Restart and check the pump is operating.
・Ensure that the tank level is within the appropriate range.
AL10
High compressor intake
temp.
Stop
Check the temperature of the circulating fluid returning to
the product.
AL11
Low compressor intake
temp.
Stop
・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
o
C.
AL12
Low super heat temperature
Stop
AL13
High compressor discharge
pressure
Stop
Reduce the ambient temperature or heat load.
AL15
Refrigerant circuit pressure
(high pressure side) drop
Stop
・Check the ambient temperature is within the specified
range.
・ It is possible that refrigerant is leaking. Ask for the
service.
AL16
Refrigerant circuit pressure
(low pressure side) rise
Stop
Reduce the ambient temperature or heat load.
AL17
Refrigerant circuit pressure
(low pressure side) drop
Stop
･Check the circulating fluid flows.
･ It is possible that refrigerant is leaking. Ask for the
service.
AL18
Compressor overload
Stop
Leave for 10 minutes and restart, and check the
compressor is operating.
AL19
2
Communication error
2
Continued
1
The request message from the host computer has not
arrived. Send it again.
AL20
Memory error
Stop
Written data is different from read data. Ask for the service
of RAM.
AL21
DC line fuse cut
Stop
1
DC circuit fuse of the communication connector for the
contact input/output is short circuited.
Ask for the service of the fuse of the DC circuit.
Confirm there is no incorrect wiring or load of 500mA or
larger.
AL22
Circulating fluid discharge
temp. sensor failure
Stop
The temperature sensor is short-circuited or opened.
Ask for the service of the temperature sensor.
AL23
Circulating fluid return temp.
sensor failure
Stop
AL24
Compressor intake temp.
sensor failure
Stop
AL25
Circulating fluid discharge
pressure sensor failure
Stop
The pressure sensor is short-circuited or opened.
Ask for the service of the pressure sensor.
AL26
Compressor discharge
pressure sensor failure
Stop
AL27
Compressor intake pressure
sensor failure
Stop

SMC Networks HRS018-A 20 R Series Specifications

General

Brand	SMC Networks
Model	HRS018-A 20 R Series
Category	Chiller
Language	English