HRX-OM-S010
Chapter 4 MODBUS communication function
HRS100/150 Series
4.10
Register Map
4-19
4.10.6 Alarm flag
Each type of alarm which occurs in the product is read with the following
assignment.
Name
Alarm flag 1
Bit
15 14 13 12
11
10
9
8
7
6
5
4
3
2
1
0
Name
Alarm flag 2
Bit
15 14 13 12
11
10
9
8
7
6
5
4
3
2
1
0
Name
Alarm flag 3
Bit
15 14 13 12
11
10
9
8
7
6
5
4
3
2
1
0
Name
Alarm flag 4
Bit
15 14 13 12
11
10
9
8
7
6
5
4
3
2
1
0
Bit
Name
Explanation
A
lar
m f
lag
1
0
Low level in tank
Alarm given off status
0= Not occurred
1= Occurred
1
High circulating fluid discharge temp.
2
Circulating fluid discharge temp. rise
3
Circulating fluid discharge temp. drop
4
High circulating fluid return temp.
5
High circulating fluid discharge pressure
3
6
Abnormal pump operation
3
7
High circulating fluid discharge pressure
rise
8
Circulating fluid discharge pressure drop
9
High compressor suction temp.
10
Low compressor suction temp.
11
Low super heat temperature
12
High compressor discharge pressure
13
Unused
14
Refrigerant circuit pressure (high pressure
side) drop
15
Refrigerant circuit pressure (low pressure
side) rise
A
lar
m f
lag
2
0
Refrigerant circuit pressure (low pressure
side) drop
1
Compressor running failure
2
Communication error
3
Memory error
4
DC line fuse cut
5
Circulating fluid discharge temp. sensor
failure
6
Circulating fluid return temp. sensor failure
7
Compressor suction temp. sensor failure
8
Circulating fluid discharge pressure sensor
failure
9
Compressor discharge pressure sensor
failure
10
Compressor suction pressure sensor failure
11
Pump maintenance
12
Fan maintenance
1
13
Compressor maintenance
14
Contact input 1 signal detection
15
Contact input 2 signal detection
