J&E Hall JEHSD-0400-B3-M-3, Technical Manual

Page: 30 / 44

Issue: 01.08.2020
Alarm Information
Alarm Settings
The alarms below are in ascending order of priority. When there is any alarm, the alarm code will be displayed on the main sc
and the alarm LED will be on or blinking.
Code Description
A01 Clock board error
A08 Suction temperature probe fault
A09 Outdoor temperature probe fault
A10 Condensing coil temperature probe fault
A11 Discharge temperature probe fault
A13 Discharge pressure transducer fault
A14 Suction pressure transducer fault
A15 Outside of operating envelope (Digital scroll)
A16 Condensing coil high temperature
A17 Compressor high discharge temperature alarm
A19 Compressor overload trip
A24 Low pressure alarm by transducer
A25 High pressure alarm by transducer
A26 Low pressure alarm by pressure switch
A27 Compressor high pressure alarm by pressure switch
Alarm LED
Off
No alarm
On Only auto reset alarm
Blinking Manual reset alarm
Auto:
An alarm condition is created but when cleared the unit will restart automatically.
Manual:
An alarm condition is created but requires resetting manually before the unit can restart.
To Reset Alarm Condition:
•
Press
ALARM
button for more than 5 seconds.
•
Power controller
OFF
then back
ON
.
BACnet and Modbus Protocol
To enable this BACnet and Modbus Protocol feature, an additional serial card
Protocol Part-code
BACnet MS/TP PCO10B0BA0
Modbus RTU PCOS004850
The protocol can be for BACnet protocol or Modbus RTU protocol on screen Fc01
Please contact J & E Hall for the BMS point list for Modbus and BACnet protocol.
The alarms below are in ascending order of priority. When there is any alarm, the alarm code will be displayed on the main sc
Description Reset type
Auto
Auto
Auto
Condensing coil temperature probe fault Auto
Auto
Auto
Auto
Outside of operating envelope (Digital scroll) Auto
Auto
Compressor high discharge temperature alarm Auto
Auto
Auto:
Auto: less than 3 times in 30 minutes
Manual: 3 times or more in 30 minutes
Low pressure alarm by pressure switch Auto
Compressor high pressure alarm by pressure switch Manual
An alarm condition is created but when cleared the unit will restart automatically.
An alarm condition is created but requires resetting manually before the unit can restart.
button for more than 5 seconds.
feature, an additional serial card is required to be plug
Description, (Design Special)
pCOnet BACnet MS/TP RS485 Serial Card
Modbus, Optocoupled RS485 Serial Card
The protocol can be for BACnet protocol or Modbus RTU protocol on screen Fc01
Please contact J & E Hall for the BMS point list for Modbus and BACnet protocol.
Page 30
The alarms below are in ascending order of priority. When there is any alarm, the alarm code will be displayed on the main screen
Reset type
Auto: less than 3 times in 30 minutes
Manual: 3 times or more in 30 minutes
is required to be plugged into the board
Description, (Design Special)