MAXA HWA1-A 0140, Руководство пользователя

Страница: 26 / 32

HWA1-A
Air/water chillers with axial fans
25
19.15 [E611÷E682] TEMPERATURE SENSORS ALARMS
The sensor alarms are all auto-reset type. The alarm of a given sensor inhibits the functions which need its value. For each
encoding, see the table below.
Conditions of alarm sensor:
- Disconnected sensor.
- Short-circuit sensor.
- Sensor records a wrong range of temperature.
Temperature sensor characterization: NTC- 10kΏ a 25°C β3435
19.16 POWER FAILURE
After power supply reset:
•
The system comes back to the previous state before the power failure.
•
If the system is in defrosting period, this mode will be cancelled after power supply reset.
•
All the running timings will be cleared and reset again.
19.17 ALARMS ’ LIST
In case of alarm, an error code will appear on the controller ’s display .
Code Description Lockout
E000 Remote switch Off of the unit Unit
E001 High pressure alarm Unit
E002 Low pressure alarm Unit
E003 Compressor 1 thermal overload protection Compressor 1 (C1)
E013 Compressor 2 thermal overload protection Compressor 2 (C2)
E004 Fan motor 1 thermal overload protection Unit
E005 Antifreeze alarm Unit
E006 Flow switch alarm Unit
E009 High compressor’s discharge temperature Unit
E016 Usage pump 1 thermal overload protection Pump 1
E018 High temperature alarm in cooling operation Unit
E026 Usage pump 2 thermal overload protection Pump
E040 Compressor termic Compressor
E042 Poor heat exchange alarm Unit/Sanitary
E611 Inlet water temp. sensor error Unit
E621 Outlet water temp. sensor error Unit
E631 Compressor intake temperature sensor Unit
E641 Compressor discharge temperature sensor Unit
E651 Outdoor air temp. sensor for climatic regulation Unit
(1)
E652 Desuperheater gas temperature sensor (if present) Unit
(1)
E662 Total recovery temperature (if present) --
(1)
E672 Sanitary temperature sensor (if present) --
(1)
E682 Plant water plant temperature remote sensor (if present)
E691 Low pressure transducer Unit
E701 High pressure transducer Unit
(1)
Only if the optional “GI” module is prese nt and active function.
20 MODBUS VARIABLES
The control introduces default the next configuration:
BAUD RATE 9600
PARITY EVEN
DATA BIT 8
STOP BIT 1
DEVICE ID 1
The control introduces default the next configuration
To configure the Modbus communication depending on your needs, it is necessary to modify the next registers:
H124 : BAUD RATE
0 4800
1 9600
2 19200
3 38400