146
MODBUS registers
Address
register
Meaning Description
124 Error code
Specific error code, refer to the code table.
125 Error code 2
126 Error code 2
127 Error code 3
128 Status bit: 1
BIT15 Ask for installation parameter, 1: ask; 0: don’t ask
BIT14 Load software version, 1: ask; 0: don't ask
BIT13 Load SN, 1: ask; 0: don't ask
BIT12 Reserved
BIT11 EVU 1: electricity (from photovoltaics) 0: based on SG signal
BIT10 SG 1: normal electric price 0: high electric price
BIT9 Storage tank water antifreeze
BIT8 Solar signal input
BIT7 Room thermostat in cooling mode
BIT6 Room thermostat in heating mode
BIT5 ODU test mode
BIT4 Remote ON/OFF (1 : d8)
BIT3 Oil return
BIT2 Antifreeze
BIT1 Defrosting
BIT0 Recirculation pump
129 Load output
BIT15 Defrosting
BIT14 External heat source
BIT13 Compressor on
BIT12 ALARM
BIT11 Solar pump Pump_S
BIT10 HEAT4
BIT9 SV3
BIT8 Mixing pump P_c
BIT7 Recirculation pump P_d
BIT6 External pump P_o
BIT5 SV2
BIT4 SV1
BIT3 Standard unit pump Pump_I
BIT2 TBH
BIT1 IBH2
BIT0 IBH
130 IDU software version 0 - 99 Indicates the software version of the indoor unit
131 HMI software version 0 - 99 Indicates the software version of the user interface
132 Unit target frequency Compressor target frequency in Hz. Send value = actual value
133 DC bus current Unit: Amps
134 DC bus voltage Return value = actual value / 10 (Unit: Volts)
135
TF module
temperature
Unit (°C) - External feedback to unit
136 Curve 1T1S Value read = current value
137 Curve 2T1S Value read = current value
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