Nordic ATWC Series, Installation And Service Manual, Page: 54 / 106

PRELIMINARY: 24-Sep-2021 Page 54 002536MAN-00
TABLE 23 - BACnet OBJECTS - FAULT Descriptions (Read Only)
Name Data Type ID Description
AI4 (Cold Tank) Analog Input AI0 Cold tank temperature sensor faulty or disconnected - requires accessory
AI5 (Hot Tank) Analog Input AI1 Hot tank temperature sensor faulty or disconnected - requires accessory
LPS1 Analog Input AI6 R410a low pressure sensor faulty or disconnected
HPS1 Analog Input AI7 R410a high pressure sensor faulty or disconnected
LPS2 Analog Input AI13 R134a low pressure sensor faulty or disconnected
HPS2 Analog Input AI14 R134a high pressure sensor faulty or disconnected
Suction Line1 Analog Input AI10 R410a suction line temperature sensor faulty or disconnected
Suction Line2 Analog Input AI17 R134a suction line temperature sensor faulty or disconnected
Outside Ambient Analog Input AI20 Outside temperature sensor faulty or disconnected
O_IN Analog Input AI21 N/A
O_OUT Analog Input AI22 N/A
I_IN Analog Input AI23 Indoor IN temperature sensor faulty or disconnected
I_OUT Analog Input AI24
Name ID BIT #
DECIMAL
VALUE*
Description
Board Faults AV8 - - Bit description is given below.
0 1 Digital inputs
1 2 Digital outputs
2 4 PWM outputs
3 8 Analog to digital conversion
4 16 Real time clock
5 32 EEPROM memory
6 64 Menu buttons
7 128 LCD Interface
Sensor Faults AV9 - - Indicates sensor failures. Bit description is given below.
0 1 R410a suction line temperature sensor
1 2 R134a suction line temperature sensor
2 4 Outdoor Ambient temperature sensor
3 8 Calibration temperature resistor plug
4 16 Indoor IN temperature sensor
5 32 Indoor OUT temperature sensor
6 64 N/A
7 128 N/A
8 256 Cold tank temperature sensor on AI4 - accessory
9 512 Hot tank temperature sensor on AI5 - accessory
Note: Board and Sensor Fault objects are type Analog Value but values are bit coded and may be decoded as such (integer value).
Note * : Value is for a single fault and reference only.
Note: Objects may be subject to change without prior notice.
Indoor OUT temperature sensor faulty or disconnected